plazi/treatments-xml
2
0
Fork 0
Code Issues Pull requests Releases Activity
treatments-xml/data/78/71/99/787199DE2040516BBA5C6C967F16833B.xml
maintenance 33c9f76a82 added 78
2024-06-21 12:40:57 +02:00

537 lines
77 KiB
XML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1137.94224" ID-Pensoft-Pub="1313-2970-1137-109" ID-Pensoft-UUID="86CD4AD142225A3BBD611AF0C16E9848" ID-ZooBank="0FB502BD2CD1442ABAFE8C5A93D3CB4B" ModsDocID="1313-2970-1137-109" checkinTime="1671892171459" checkinUser="pensoft" docAuthor="Wang, Qianwei, Horne, David J., Fan, Jiawei, Wen, Ruilin, Smith, Robin J., Wang, Min &amp; Zhai, Dayou" docDate="2022" docId="787199DE2040516BBA5C6C967F16833B" docLanguage="en" docName="ZooKeys 1137: 109-132" docOrigin="ZooKeys 1137" docPubDate="2022-12-22" docSource="http://dx.doi.org/10.3897/zookeys.1137.94224" docTitle="Ilyocypris leptolinea Wang &amp; Zhai 2022, sp. nov." docType="treatment" docUuid="A551E7F9-DD93-4A16-9557-2ED465EA4221" docUuidSource="ZooBank" docVersion="2" id="86CD4AD142225A3BBD611AF0C16E9848" lastPageNumber="109" masterDocId="86CD4AD142225A3BBD611AF0C16E9848" masterDocTitle="Ilyocypris leptolinea Wang &amp; Zhai, sp. nov., an ostracod (Ostracoda, Crustacea) from the late Quaternary of Inner Mongolia, northern China" masterLastPageNumber="132" masterPageNumber="109" pageNumber="109" updateTime="1671892472867" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Ilyocypris leptolinea Wang &amp; Zhai, sp. nov., an ostracod (Ostracoda, Crustacea) from the late Quaternary of Inner Mongolia, northern China</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Qianwei</mods:namePart>
<mods:affiliation>Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming 650500, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Horne, David J.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-2148-437X</mods:nameIdentifier>
<mods:affiliation>MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Fan, Jiawei</mods:namePart>
<mods:affiliation>School of Geography, Queen Mary University of London, Mile End Road, London E 1 4 NS, UK</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wen, Ruilin</mods:namePart>
<mods:affiliation>Institute of Geology, China Earthquake Administration, Beijing 100029, China &amp; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beitucheng West Road, Chaoyang District, Beijing 100029, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Smith, Robin J.</mods:namePart>
<mods:affiliation>CAS Center for Excellence in Life and Paleoenvironment, Beijing, 100044, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Min</mods:namePart>
<mods:affiliation>Lake Biwa Museum, 1091 Oroshimo, Kusatsu, Shiga 525 - 0001, Japan</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Zhai, Dayou</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-6312-851X</mods:nameIdentifier>
<mods:affiliation>Yunnan Key Laboratory for Palaeobiology, Institute of Palaeontology, Yunnan University, Kunming 650500, China</mods:affiliation>
<mods:nameIdentifier type="email">dyzhai@ynu.edu.cn</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2022</mods:date>
<mods:detail type="pubDate">
<mods:number>2022-12-22</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1137</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>109</mods:start>
<mods:end>132</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1137.94224</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1137.94224</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1137-109</mods:identifier>
<mods:identifier type="ZooBank">0FB502BD2CD1442ABAFE8C5A93D3CB4B</mods:identifier>
<mods:identifier type="Pensoft-UUID">86CD4AD142225A3BBD611AF0C16E9848</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:zoobank.org:act:A551E7F9-DD93-4A16-9557-2ED465EA4221" httpUri="http://treatment.plazi.org/id/787199DE2040516BBA5C6C967F16833B" lastPageNumber="109" pageId="0" pageNumber="109">
<subSubSection pageId="0" pageNumber="109" type="nomenclature">
<paragraph pageId="0" pageNumber="109">
<taxonomicName LSID="https://zoobank.org/A551E7F9-DD93-4A16-9557-2ED465EA4221" authority="Wang &amp; Zhai" authorityName="Wang &amp; Zhai" authorityYear="2022" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea" status="sp. nov.">Ilyocypris leptolinea Wang &amp; Zhai</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="109">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="description">
<paragraph pageId="0" pageNumber="109">
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">Figs 2</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">, 3</figureCitation>
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">, 4</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="type locality">
<paragraph pageId="0" pageNumber="109">Type locality.</paragraph>
<paragraph pageId="0" pageNumber="109">
XJG2 section (
<geoCoordinate degrees="43" direction="north" minutes="51" orientation="latitude" precision="1" seconds="41.9" value="43.861637">43°51'41.9&quot;N</geoCoordinate>
,
<geoCoordinate degrees="116" direction="east" minutes="24" orientation="longitude" precision="1" seconds="57.1" value="116.41586">116°24'57.1&quot;E</geoCoordinate>
, Fig.
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. A digital Elevation Model showing the position of the study area (red rectangle) in central-eastern Inner Mongolia, China B digital Elevation Model showing the location of the XJG 2 section C field photo of the section D lithology of the section. Red triangle indicates the result of 14 C dating of gastropods from depth 139 - 140 cm. See text for details." figureDoi="10.3897/zookeys.1137.94224.figure1" httpUri="https://binary.pensoft.net/fig/786385" pageId="0" pageNumber="109">1</figureCitation>
), lacustrine outcrop cut by intermittent river in central-eastern Inner Mongolia, China.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="type horizon">
<paragraph pageId="0" pageNumber="109">Type horizon.</paragraph>
<paragraph pageId="0" pageNumber="109">
Late Pleistocene to Holocene; holotype from 209-210 cm depth in section, c. 70 cm below level of gastropod shells that yielded a calibrated radiocarbon date of 10,108
<normalizedToken originalValue="±">+/-</normalizedToken>
93 calendar years before present (cal yr BP).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="type material">
<paragraph pageId="0" pageNumber="109">Type material.</paragraph>
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" italics="true" pageId="0" pageNumber="109">Holotype</emphasis>
: adult left valve, XJG2-210-1 (XJG2, section code; 210, sample code, corresponding to 209-210 cm depth in section; 1, registration number), length 0.94 mm, height 0.48 mm.
<emphasis bold="true" italics="true" pageId="0" pageNumber="109">Paratypes</emphasis>
: seven adult left valves, XJG2-021-1, XJG2-177-1, XJG2-190-1, XJG2-193-1, XJG2-197-2, XJG2-199-2, XJG2-228-2. All type specimens with marginal ripplets on anterior and posterior calcified inner lamellae well-preserved (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109" start="Figure 2" startId="F2">
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">Figure 2.</emphasis>
Adult left valves of the ostracod
<taxonomicName authorityName="Wang &amp; Zhai" authorityYear="2022" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris leptolinea</emphasis>
</taxonomicName>
Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China
<emphasis bold="true" pageId="0" pageNumber="109">A-D</emphasis>
XJG2-210-1 (holotype, 0.94
<normalizedToken originalValue="×">x</normalizedToken>
0.48 mm)
<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
exterior view
<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
interior view of the posterior part, showing the marginal ripplets
<emphasis bold="true" pageId="0" pageNumber="109">D</emphasis>
interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella
<emphasis bold="true" pageId="0" pageNumber="109">E, F</emphasis>
XJG2-206-4
<emphasis bold="true" pageId="0" pageNumber="109">E</emphasis>
oblique-dorsal view
<emphasis bold="true" pageId="0" pageNumber="109">F</emphasis>
enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists
<emphasis bold="true" pageId="0" pageNumber="109">G</emphasis>
XJG2-206-1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists
<emphasis bold="true" pageId="0" pageNumber="109">H-J</emphasis>
XJG2-199-2 (paratype)
<emphasis bold="true" pageId="0" pageNumber="109">H</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">I</emphasis>
interior view of the postero-ventral part, showing the marginal ripplets
<emphasis bold="true" pageId="0" pageNumber="109">J</emphasis>
Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">A, B, E, H</emphasis>
); 100
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">C, D, I, J</emphasis>
); 50
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">F, G</emphasis>
).
</paragraph>
</caption>
<caption doi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">Figure 3.</emphasis>
Adult left valves of the ostracod
<taxonomicName authorityName="Wang &amp; Zhai" authorityYear="2022" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris leptolinea</emphasis>
</taxonomicName>
Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China
<emphasis bold="true" pageId="0" pageNumber="109">A-C</emphasis>
XJG2-21-1 (paratype)
<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
exterior view
<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
interior view of the postero-ventral part, showing the marginal ripplets
<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">D-G</emphasis>
XJG2-197-2 (paratype)
<emphasis bold="true" pageId="0" pageNumber="109">D</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">E</emphasis>
interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed)
<emphasis bold="true" pageId="0" pageNumber="109">F</emphasis>
adductor muscle scars (AMS) and mandibular scars (MS)
<emphasis bold="true" pageId="0" pageNumber="109">G</emphasis>
interior view of the posterior part, showing the marginal ripplets. Scale bars: 200
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">A, C, D</emphasis>
); 100
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">B, E, G</emphasis>
); 50
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">F</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="materials_examined">
<paragraph pageId="0" pageNumber="109">Other material examined.</paragraph>
<paragraph pageId="0" pageNumber="109">
<specimenCount type="adult">17 adult</specimenCount>
left valves,
<specimenCount type="adult">22 adult</specimenCount>
right valves, six A-
<specimenCount type="juvenile">1 juvenile</specimenCount>
left valves, and one A-
<specimenCount type="juvenile">1 juvenile</specimenCount>
right valve (Table
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Examined valves of Ilyocypris from XJG 2 section. All the adult left valves are identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. based on marginal ripplets. Others are tentatively assigned to this species. Note that all the valves of this species used for outline analysis in this study are adult left valves imaged for exterior view. Abbreviations: A, adult; A- 1, last juvenile stage before adult; H, height; L, length; LV, left valve; MR, marginal ripplets; OL, outline; RV, right valve." httpUri="http://table.plazi.org/id/8FB8757948C697B8F3D7F5B84592CA0B" pageId="0" pageNumber="109" tableUuid="8FB8757948C697B8F3D7F5B84592CA0B">1</tableCitation>
; Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2</figureCitation>
-
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Height-length biplots of the left valves of Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. (A) and the right valves tentatively identified as this species (B) from the late Quaternary Xiaojinggou section of Inner Mongolia, China." figureDoi="10.3897/zookeys.1137.94224.figure5" httpUri="https://binary.pensoft.net/fig/786389" pageId="0" pageNumber="109">5</figureCitation>
). Adult right valves and juvenile valves provisionally identified as this species in view of monospecific adult left valves in section.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="etymology">
<paragraph pageId="0" pageNumber="109">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="109">
From the Greek
<emphasis italics="true" pageId="0" pageNumber="109">leptos</emphasis>
for fine, small, or subtle, and Latin
<emphasis italics="true" pageId="0" pageNumber="109">linea</emphasis>
for line or thread, referring to fine marginal ripplets on calcified inner lamellae of LV.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="description">
<paragraph pageId="0" pageNumber="109">Dimensions.</paragraph>
<paragraph pageId="0" pageNumber="109">
Adult left valves (
<emphasis italics="true" pageId="0" pageNumber="109">n</emphasis>
= 25, Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Height-length biplots of the left valves of Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. (A) and the right valves tentatively identified as this species (B) from the late Quaternary Xiaojinggou section of Inner Mongolia, China." figureDoi="10.3897/zookeys.1137.94224.figure5" httpUri="https://binary.pensoft.net/fig/786389" pageId="0" pageNumber="109">5A</figureCitation>
) with length 0.78-1.05 mm, height 0.42-0.56 mm, H/L ratio 0.51-0.55. Adult right valves (
<emphasis italics="true" pageId="0" pageNumber="109">n</emphasis>
= 22, Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Height-length biplots of the left valves of Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. (A) and the right valves tentatively identified as this species (B) from the late Quaternary Xiaojinggou section of Inner Mongolia, China." figureDoi="10.3897/zookeys.1137.94224.figure5" httpUri="https://binary.pensoft.net/fig/786389" pageId="0" pageNumber="109">5B</figureCitation>
) with length 0.79-0.99 mm, height 0.43-0.53 mm, H/L ratio 0.52-0.56. Juvenile valves slightly smaller but with size ranges overlapping with those of adult valves (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Height-length biplots of the left valves of Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. (A) and the right valves tentatively identified as this species (B) from the late Quaternary Xiaojinggou section of Inner Mongolia, China." figureDoi="10.3897/zookeys.1137.94224.figure5" httpUri="https://binary.pensoft.net/fig/786389" pageId="0" pageNumber="109">5</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="diagnosis">
<paragraph pageId="0" pageNumber="109">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="109">
Intermediate-sized
<taxonomicName authorityName="Brady &amp; Norman" authorityYear="1889" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris</emphasis>
</taxonomicName>
(length ranging from 0.78 to 1.05 mm, Table
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Examined valves of Ilyocypris from XJG 2 section. All the adult left valves are identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. based on marginal ripplets. Others are tentatively assigned to this species. Note that all the valves of this species used for outline analysis in this study are adult left valves imaged for exterior view. Abbreviations: A, adult; A- 1, last juvenile stage before adult; H, height; L, length; LV, left valve; MR, marginal ripplets; OL, outline; RV, right valve." httpUri="http://table.plazi.org/id/8FB8757948C697B8F3D7F5B84592CA0B" pageId="0" pageNumber="109" tableUuid="8FB8757948C697B8F3D7F5B84592CA0B">1</tableCitation>
) with shape, sulci, and pits typical of genus. Valve surface without nodes, occasionally with tiny spines along anterior and/or posterior margins. Calcified inner lamellae wide, bearing (in left valve only) two rows of densely arranged, fine marginal ripplets along entire anterior and posterior valve margins; distal row near valve margin, usually well expressed; proximal row in intermediate area less pronounced, absent in poorly preserved specimens. One inner list present between two rows of marginal ripplets in well-preserved specimens.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="description">
<paragraph pageId="0" pageNumber="109">Description.</paragraph>
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">
<emphasis italics="true" pageId="0" pageNumber="109">Left valves</emphasis>
.
</emphasis>
Intermediate-sized
<taxonomicName authorityName="Brady &amp; Norman" authorityYear="1889" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris</emphasis>
</taxonomicName>
. Valve sub-reniform in lateral view, with greatest height (antero-dorsal corner) at anterior third. Dorsal margin, i.e., section between antero-dorsal and postero-dorsal corners, nearly straight but with blunt turn immediately behind posterior sulcus due to inflation of postero-dorsal part. Anterior margin broadly rounded, with dorsal part nearly straight and more ventral parts evenly rounded. Posterior margin evenly rounded and less obtrusive. Ventral margin concave. Valve surface carrying two transverse sulci, with anterior sulcus originating from antero-dorsal corner, tapering ventrally, and terminating slightly above mid-height. Posterior sulcus wider and shorter. Adductor muscle scars situated in ovate depression immediately below posterior sulcus. Mandibular scars situated in two small depressions to antero-ventral position of adductor muscle scars. Shell surface densely covered with small pits, with those in front of anterior sulcus, between two sulci and behind posterior sulcus, smaller. Small number of tiny spines present along anterior and posterior margins in some specimens.
</paragraph>
<paragraph pageId="0" pageNumber="109">
Interior view, anterior and posterior calcified inner lamellae comparatively wide but with anterior one slightly wider. Three inner lists present on anterior calcified inner lamella (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2D, J</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3E</figureCitation>
). First one running in intermediate zone, usually weakly expressed, sometimes not preserved. Second and third ones running close to inner margin. Inner lists also present on posterior calcified inner lamella but with first one usually very faint or absent (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2C, I</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3B, G</figureCitation>
). Two rows of fine, densely arranged marginal ripplets present on both anterior and posterior calcified inner lamellae (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3</figureCitation>
): distal row (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2C, D, I, J</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3B, E, G</figureCitation>
) with each ripplet extending from exterior margin of selvage near valve margin to almost first inner list, distributed throughout entire anterior and posterior calcified inner lamellae, usually well expressed; proximal zone (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2C, D, J</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3B, E, G</figureCitation>
) present between first and second inner lists, better observed at antero-ventral and postero-ventral areas, sometimes not preserved (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2I</figureCitation>
). Adductor muscle scars (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3F</figureCitation>
), consisting of six scars of different sizes and shapes, arranged in two rows (four anterior scars and two posterior ones). Mandibular scars (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-C XJG 2 - 21 - 1 (paratype) A exterior view B interior view of the postero-ventral part, showing the marginal ripplets C interior view D-G XJG 2 - 197 - 2 (paratype) D interior view E interior view of the antero-ventral part, showing the marginal ripplets and three inner lists (arrowed) F adductor muscle scars (AMS) and mandibular scars (MS) G interior view of the posterior part, showing the marginal ripplets. Scale bars: 200 μm (A, C, D); 100 μm (B, E, G); 50 μm (F)." figureDoi="10.3897/zookeys.1137.94224.figure3" httpUri="https://binary.pensoft.net/fig/786387" pageId="0" pageNumber="109">3F</figureCitation>
) consisting of two sub-oval elements.
</paragraph>
<paragraph pageId="0" pageNumber="109">
Dorsal view (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2E</figureCitation>
) semi-elliptical, with part behind posterior sulcus wider than anterior part. Anterior end pointed. Posterior end bluntly pointed. Antero-dorsal corner with one small blunt expansion representing tooth-structure of hinge. Middle part of ventral calcified inner lamella (corresponding to highest part of ventral margin in lateral view; observed from oblique-dorsal view) with gentle, inward, i.e., adaxial, expansion. Two proximal inner lists, i.e., second and third ones, showing complex crossing patterns on this part (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2F, G</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">
<emphasis italics="true" pageId="0" pageNumber="109">Right valves</emphasis>
.
</emphasis>
Shape similar to that of left valve, but dorsal margin straighter (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4A, B</figureCitation>
) with posterior section not inflated dorsally (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4A, B</figureCitation>
). Valve margin also with three inner lists but first one very faint on anterior calcified inner lamella (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4C</figureCitation>
) and almost absent on posterior calcified inner lamella (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4D</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109" start="Figure 4" startId="F4">
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">Figure 4.</emphasis>
Ostracod valves tentatively identified as
<taxonomicName authorityName="Wang &amp; Zhai" authorityYear="2022" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris leptolinea</emphasis>
</taxonomicName>
Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China
<emphasis bold="true" pageId="0" pageNumber="109">A-D</emphasis>
XJG2-203-1, adult right valve
<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
exterior view
<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
interior view of the antero-ventral part, showing three inner lists (arrowed)
<emphasis bold="true" pageId="0" pageNumber="109">D</emphasis>
interior view of the postero-ventral part
<emphasis bold="true" pageId="0" pageNumber="109">E</emphasis>
XJG2-193-4, right valve of A-1 juvenile, exterior view
<emphasis bold="true" pageId="0" pageNumber="109">F-H</emphasis>
XJG2-199-1, left valve of A-1 juvenile
<emphasis bold="true" pageId="0" pageNumber="109">F</emphasis>
interior view
<emphasis bold="true" pageId="0" pageNumber="109">G</emphasis>
interior view of the postero-ventral part, showing the marginal ripplets
<emphasis bold="true" pageId="0" pageNumber="109">H</emphasis>
interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">A, B, E, F</emphasis>
); 100
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="109">C, D, G, H</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">
<emphasis italics="true" pageId="0" pageNumber="109">Valves of A</emphasis>
-
<emphasis italics="true" pageId="0" pageNumber="109">1 juveniles</emphasis>
.
</emphasis>
Shape similar to that of adults but with dorsal margin more inclined (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4E, F</figureCitation>
). Pits on valve surface smaller and shallower. Calcified inner lamellae of left valve narrow, with only one row of densely arranged marginal ripplets distally: extending to median area in anterior calcified inner lamella (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4H</figureCitation>
), almost to proximal area in postero-ventral area (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4G</figureCitation>
). Only one inner list present, running close to inner margin (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4G, H</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1137.94224.figure5" httpUri="https://binary.pensoft.net/fig/786389" pageId="0" pageNumber="109" start="Figure 5" startId="F5">
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">Figure 5.</emphasis>
Height-length biplots of the left valves of
<taxonomicName authorityName="Wang &amp; Zhai" authorityYear="2022" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris leptolinea</emphasis>
</taxonomicName>
Wang &amp; Zhai, sp. nov. (
<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
) and the right valves tentatively identified as this species (
<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
) from the late Quaternary Xiaojinggou section of Inner Mongolia, China.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="109" type="differential diagnosis">
<paragraph pageId="0" pageNumber="109">Differential diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="109">
The new species can be easily distinguished from congeners by the fineness, number, and distribution of the two rows of marginal ripplets as well as the presence of the outer-most (first) inner list in the intermediate zone that separates the two rows of marginal ripplets.
<taxonomicName authorityName="G.O.Sars" authorityYear="1890" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris bradyi" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="bradyi">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris bradyi</emphasis>
</taxonomicName>
, for example, has fewer, thicker, and more widely spaced ripplets confined to the postero-ventral area, typically four or five in the outer row (see e.g.,
<bibRefCitation DOI="https://doi.org/10.1002/iroh.201301729" author="Mazzini, I" journalOrPublisher="International Review of Hydrobiology" pageId="0" pageNumber="109" pagination="395 - 408" refId="B21" refString="Mazzini, I, Gliozzi, E, Rossetti, G, Pieri, V, 2014. The Ilyocypris puzzle: A multidisciplinary approach to the study of phenotypic variability. International Review of Hydrobiology 99 (6): 395 - 408, DOI: https://doi.org/10.1002/iroh.201301729" title="The Ilyocypris puzzle: A multidisciplinary approach to the study of phenotypic variability." url="https://doi.org/10.1002/iroh.201301729" volume="99" year="2014">Mazzini et al. 2014</bibRefCitation>
: fig. 11). Considering potential taphonomic loss of finer morphologies in fossil material (e.g., the abrasion of the proximal row of marginal ripplets and the inner lists), several species with morphologies that may be confused with the poorly preserved specimens of the new species are compared here.
<taxonomicName authorityName="Kaufmann" authorityYear="1900" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris lacustris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="lacustris">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris lacustris</emphasis>
</taxonomicName>
Kaufmann, 1900 seems to have two rows of fine marginal ripplets separated by one inner list on the anterior valve margin, which resembles the new species (
<bibRefCitation author="Fuhrmann, R" journalOrPublisher="Altenburger Naturwissenschaftliche Forschungen" pageId="0" pageNumber="109" pagination="1 - 320" refId="B9" refString="Fuhrmann, R, 2012. Atlas quartaerer und rezenter Ostrakoden Mitteleuropas. Altenburger Naturwissenschaftliche Forschungen 15: 1 - 320" title="Atlas quartaerer und rezenter Ostrakoden Mitteleuropas." volume="15" year="2012">Fuhrmann 2012</bibRefCitation>
: Tafel (= pl.) 76 1b), but the ripplets on the posterior part are confined to the postero-ventral margin and consist of only one row (
<bibRefCitation author="Fuhrmann, R" journalOrPublisher="Altenburger Naturwissenschaftliche Forschungen" pageId="0" pageNumber="109" pagination="1 - 320" refId="B9" refString="Fuhrmann, R, 2012. Atlas quartaerer und rezenter Ostrakoden Mitteleuropas. Altenburger Naturwissenschaftliche Forschungen 15: 1 - 320" title="Atlas quartaerer und rezenter Ostrakoden Mitteleuropas." volume="15" year="2012">Fuhrmann 2012</bibRefCitation>
: Tafel (= pl.) 76 1f and 2d). The highest point of the carapace of
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. lacustris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="lacustris">
<emphasis italics="true" pageId="0" pageNumber="109">I. lacustris</emphasis>
</taxonomicName>
is situated at approximately the anterior quarter, more anterior than that of the new species. The marginal ripplets on the posterior part of
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. salebrosa" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="salebrosa">
<emphasis italics="true" pageId="0" pageNumber="109">I. salebrosa</emphasis>
</taxonomicName>
are also fine and consist of two rows (
<bibRefCitation DOI="https://doi.org/10.1002/iroh.201301729" author="Mazzini, I" journalOrPublisher="International Review of Hydrobiology" pageId="0" pageNumber="109" pagination="395 - 408" refId="B21" refString="Mazzini, I, Gliozzi, E, Rossetti, G, Pieri, V, 2014. The Ilyocypris puzzle: A multidisciplinary approach to the study of phenotypic variability. International Review of Hydrobiology 99 (6): 395 - 408, DOI: https://doi.org/10.1002/iroh.201301729" title="The Ilyocypris puzzle: A multidisciplinary approach to the study of phenotypic variability." url="https://doi.org/10.1002/iroh.201301729" volume="99" year="2014">Mazzini et al. 2014</bibRefCitation>
: fig. 11, panel 8), but are confined to the postero-ventral part too. And the prominent postero-dorsal node on the exterior valve surface offers easy distinction from the new species.
<taxonomicName class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris hanguk" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="hanguk">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris hanguk</emphasis>
</taxonomicName>
Karanovic &amp; Lee, 2013 described from South Korea, has a valve shape somewhat similar to the new species, and its H/L ratio (0.55 for LV and 0.54 for RV as measured from the holotype in
<bibRefCitation DOI="https://doi.org/10.2988/0006-324X-126.1.39" author="Karanovic, I" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="109" pagination="39 - 71" refId="B14" refString="Karanovic, I, Lee, W, 2013. On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida). Proceedings of the Biological Society of Washington 126 (1): 39 - 71, DOI: https://doi.org/10.2988/0006-324X-126.1.39" title="On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida)." url="https://doi.org/10.2988/0006-324X-126.1.39" volume="126" year="2013">Karanovic and Lee 2013</bibRefCitation>
: fig. 6A, B) comes close to that of the new species. However, no marginal ripplets were observed on the left valve of
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. hanguk" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="hanguk">
<emphasis italics="true" pageId="0" pageNumber="109">I. hanguk</emphasis>
</taxonomicName>
(
<bibRefCitation DOI="https://doi.org/10.2988/0006-324X-126.1.39" author="Karanovic, I" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="109" pagination="39 - 71" refId="B14" refString="Karanovic, I, Lee, W, 2013. On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida). Proceedings of the Biological Society of Washington 126 (1): 39 - 71, DOI: https://doi.org/10.2988/0006-324X-126.1.39" title="On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida)." url="https://doi.org/10.2988/0006-324X-126.1.39" volume="126" year="2013">Karanovic and Lee 2013</bibRefCitation>
: fig. 6A, D). Furthermore, small lateral projections are present on the postero-central part of the valve of
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. hanguk" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="hanguk">
<emphasis italics="true" pageId="0" pageNumber="109">I. hanguk</emphasis>
</taxonomicName>
(
<bibRefCitation DOI="https://doi.org/10.2988/0006-324X-126.1.39" author="Karanovic, I" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="109" pagination="39 - 71" refId="B14" refString="Karanovic, I, Lee, W, 2013. On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida). Proceedings of the Biological Society of Washington 126 (1): 39 - 71, DOI: https://doi.org/10.2988/0006-324X-126.1.39" title="On the ostracod genus Ilyocypris, with description of one new species from Korea and the first report of males of I. bradyi (Crustacea: Ostracoda: Podocopida)." url="https://doi.org/10.2988/0006-324X-126.1.39" volume="126" year="2013">Karanovic and Lee 2013</bibRefCitation>
: fig. 6B), which are not observed in
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. leptolinea" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="leptolinea">
<emphasis italics="true" pageId="0" pageNumber="109">I. leptolinea</emphasis>
</taxonomicName>
Wang &amp; Zhai, sp. nov. (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Adult left valves of the ostracod Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 210 - 1 (holotype, 0.94 x 0.48 mm) A exterior view B interior view C interior view of the posterior part, showing the marginal ripplets D interior view of the anterior part, showing the marginal ripplets. Arrows and numerals indicate three inner lists on the calcified inner lamella E, F XJG 2 - 206 - 4 E oblique-dorsal view F enlarged view of the rectangle in (E), showing the crossing pattern of the inner lists at the median part of ventral margin. Arrows and numerals indicate the three inner lists G XJG 2 - 206 - 1, enlarged oblique-dorsal view of the median part of calcified inner lamella, showing the crossing pattern of inner lists H-J XJG 2 - 199 - 2 (paratype) H interior view I interior view of the postero-ventral part, showing the marginal ripplets J Interior view of the antero-ventral part, showing the marginal ripplets. Arrows and numerals indicate the three inner lists. Scale bars: 200 μm (A, B, E, H); 100 μm (C, D, I, J); 50 μm (F, G)." figureDoi="10.3897/zookeys.1137.94224.figure2" httpUri="https://binary.pensoft.net/fig/786386" pageId="0" pageNumber="109">2</figureCitation>
-
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Ostracod valves tentatively identified as Ilyocypris leptolinea Wang &amp; Zhai, sp. nov. from the late Quaternary Xiaojinggou section of Inner Mongolia, China A-D XJG 2 - 203 - 1, adult right valve A exterior view B interior view C interior view of the antero-ventral part, showing three inner lists (arrowed) D interior view of the postero-ventral part E XJG 2 - 193 - 4, right valve of A- 1 juvenile, exterior view F-H XJG 2 - 199 - 1, left valve of A- 1 juvenile F interior view G interior view of the postero-ventral part, showing the marginal ripplets H interior view of the antero-ventral part, showing the marginal ripplets. Scale bars: 200 μm (A, B, E, F); 100 μm (C, D, G, H)." figureDoi="10.3897/zookeys.1137.94224.figure4" httpUri="https://binary.pensoft.net/fig/786388" pageId="0" pageNumber="109">4</figureCitation>
).
<taxonomicName class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris glabella" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="glabella">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris glabella</emphasis>
</taxonomicName>
Fuhrmann &amp; Goth, 2011,
<taxonomicName class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris sebeiensis" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="sebeiensis">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris sebeiensis</emphasis>
</taxonomicName>
Yang &amp; Sun, 2004 (in
<bibRefCitation author="Yang, F" journalOrPublisher="Acta Micropalaeontologica Sinica" pageId="0" pageNumber="109" pagination="367 - 381" refId="B46" refString="Yang, F, Sun, Z, Qiao, Z, Zhang, Y, 2004. Revision of the diagnosis of the genus Qinghaicypris Huang, 1979 (Ostracoda) and the environmental significance of its type species. Acta Micropalaeontologica Sinica 21: 367 - 381" title="Revision of the diagnosis of the genus Qinghaicypris Huang, 1979 (Ostracoda) and the environmental significance of its type species." volume="21" year="2004">Yang et al. 2004</bibRefCitation>
),
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. tibeta" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="tibeta">
<emphasis italics="true" pageId="0" pageNumber="109">I. tibeta</emphasis>
</taxonomicName>
(
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4942.4.2" author="Peng, P" journalOrPublisher="Zootaxa" pageId="0" pageNumber="109" pagination="501 - 542" refId="B27" refString="Peng, P, Zhai, D, Smith, R, Wang, Q, Guo, Y, Zhu, L, 2021. On some modern Ostracoda (Crustacea) from the Tibetan Plateau in SW China, with descriptions of three new species. Zootaxa 4942 (4): 501 - 542, DOI: https://doi.org/10.11646/zootaxa.4942.4.2" title="On some modern Ostracoda (Crustacea) from the Tibetan Plateau in SW China, with descriptions of three new species." url="https://doi.org/10.11646/zootaxa.4942.4.2" volume="4942" year="2021">Peng et al. 2021</bibRefCitation>
), and
<taxonomicName class="Ostracoda" genus="Qinghaicypris" kingdom="Animalia" lsidName="Qinghaicypris crassa" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="crassa">
<emphasis italics="true" pageId="0" pageNumber="109">Qinghaicypris crassa</emphasis>
</taxonomicName>
Huang, 1979 (
<bibRefCitation author="Yang, F" journalOrPublisher="Acta Micropalaeontologica Sinica" pageId="0" pageNumber="109" pagination="367 - 381" refId="B46" refString="Yang, F, Sun, Z, Qiao, Z, Zhang, Y, 2004. Revision of the diagnosis of the genus Qinghaicypris Huang, 1979 (Ostracoda) and the environmental significance of its type species. Acta Micropalaeontologica Sinica 21: 367 - 381" title="Revision of the diagnosis of the genus Qinghaicypris Huang, 1979 (Ostracoda) and the environmental significance of its type species." volume="21" year="2004">Yang et al. 2004</bibRefCitation>
) possess marginal ripplets distributed along most parts of the anterior and posterior calcified inner lamellae. However, in all these species, there is only one row of ripplets distributed near the valve margins, which are thicker and more sparsely arranged compared with the new species. As a result, even if the proximal row of marginal ripplets is taphonomically lost in the new species, it would not be confused with these species. Besides, the valves of
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. glabella" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="glabella">
<emphasis italics="true" pageId="0" pageNumber="109">I. glabella</emphasis>
</taxonomicName>
,
<taxonomicName class="Ostracoda" kingdom="Animalia" lsidName="I. sebeiensis" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="species" species="sebeiensis">
<emphasis italics="true" pageId="0" pageNumber="109">I. sebeiensis</emphasis>
</taxonomicName>
, and
<taxonomicName lsidName="Q. crassa" pageId="0" pageNumber="109" rank="species" species="crassa">
<emphasis italics="true" pageId="0" pageNumber="109">Q. crassa</emphasis>
</taxonomicName>
are significantly stouter than those of the new species. (Note that
<bibRefCitation author="Shen, Z" journalOrPublisher="Archiv for Mathematik og Naturvidenskab" pageId="0" pageNumber="109" refId="B32" refString="Shen, Z, Cheng, G, Le, C, Liu, S, 1993. The Quaternary saliferous strata and sedimentary environments of Qaidam Basin. Geology Publishing House, Beijing, 1-162. [in Chinese]" title="The Quaternary saliferous strata and sedimentary environments of Qaidam Basin. Geology Publishing House, Beijing, 1 - 162. [in Chinese]" year="1993">Shen et al. (1993)</bibRefCitation>
and
<bibRefCitation author="Hou, Y" journalOrPublisher="Science Press, Beijing" pageId="0" pageNumber="109" refId="B11" refString="Hou, Y, Gou, Y, Chen, D, 2002. Fossil Ostracoda of China. Science Press, Beijing" title="Fossil Ostracoda of China." year="2002">Hou et al. (2002)</bibRefCitation>
considered
<taxonomicName authorityName="Huang" authorityYear="1979" class="Ostracoda" genus="Qinghaicypris" kingdom="Animalia" lsidName="Qinghaicypris" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Qinghaicypris</emphasis>
</taxonomicName>
a junior synonym of
<taxonomicName authorityName="Brady &amp; Norman" authorityYear="1889" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris</emphasis>
</taxonomicName>
and moved all the species in this genus to
<taxonomicName authorityName="Brady &amp; Norman" authorityYear="1889" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris</emphasis>
</taxonomicName>
).
</paragraph>
<caption doi="10.3897/zookeys.1137.94224.figure6" httpUri="https://binary.pensoft.net/fig/786390" pageId="0" pageNumber="109" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="109">
<emphasis bold="true" pageId="0" pageNumber="109">Figure 6.</emphasis>
Illustrations showing the overlap of the outline morpho-spaces of five species of
<taxonomicName authorityName="Brady &amp; Norman" authorityYear="1889" class="Ostracoda" family="Ilyocyprididae" genus="Ilyocypris" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyocypris" order="Podocopida" pageId="0" pageNumber="109" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="109">Ilyocypris</emphasis>
</taxonomicName>
that have living or Quaternary representatives in eastern Inner Mongolia. All outlines have been standardised for equal surface area, rotated with the antero-ventral and the postero-ventral parts resting horizontally, and with the geometric centres set at (0, 0)
<emphasis bold="true" pageId="0" pageNumber="109">A</emphasis>
outlines of 42 valves
<emphasis bold="true" pageId="0" pageNumber="109">B</emphasis>
mean outlines of the five species. Arrows indicate areas showing relatively large inter-species variability, i.e., the postero-dorsal-posterior and the postero-ventral areas
<emphasis bold="true" pageId="0" pageNumber="109">C</emphasis>
principal Component Analysis (PCA) biplot of 42 valves based on their outline data. Coloured shaded areas indicate the morpho-spaces of the five species, cast on the two-dimensional space defined by PCA axis 1 and 2.
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>
Reference in a new issue View git blame Copy permalink