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<mods:title id="C3C86A29BA19E97D8531A5065F648356">Revision of F. R. C. Reeds Ordovician trilobite types from Myanmar (Burma) and western Yunnan Province, China</mods:title>
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<mods:affiliation id="CFBEE92F5F825EC5826485C5EAED6F96">Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA. &amp; Department of Geography and Environmental Studies, Texas State University, San Marcos, TX 78666, USA</mods:affiliation>
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<paragraph id="8BDD36926E791D24FF3AC29F4BB4F3B4" blockId="44.[151,431,1758,1785]" box="[151,431,1758,1785]" pageId="44" pageNumber="345">
<heading id="D09581FE6E791D24FF3AC29F4BB4F3B4" bold="true" box="[151,431,1758,1785]" fontSize="11" level="1" pageId="44" pageNumber="345" reason="1">
<taxonomicName id="4C624D116E791D24FF3AC29F4BB4F3B4" ID-CoL="53V5" authority="Dalman, 1827" authorityName="Dalman" authorityYear="1827" box="[151,431,1758,1785]" class="Trilobita" family="Illaenidae" genus="Illaenus" kingdom="Animalia" order="Corynexochida" pageId="44" pageNumber="345" phylum="Arthropoda" rank="genus">
<emphasis id="B916EA806E791D24FF3AC29F4BB4F3B4" bold="true" box="[151,431,1758,1785]" pageId="44" pageNumber="345">
<emphasis id="B916EA806E791D24FF3AC29F4AE1F3B5" bold="true" box="[151,250,1758,1785]" italics="true" pageId="44" pageNumber="345">Illaenus</emphasis>
<bibRefCitation id="EFF34B636E791D24FEAFC29E4BB4F3B4" author="Dalman, J. W." box="[258,431,1758,1785]" pageId="44" pageNumber="345" pagination="113 - 152" refId="ref43331" refString="Dalman, J. W. (1827) Om Palaederna eller de sa kallade Trilobiterna. Kungliga Svenska Vetenskaps Akadamiens Handlingar, Stockholm, 1, 113 - 152 + 226 - 294." type="journal article" year="1827">Dalman, 1827</bibRefCitation>
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<paragraph id="8BDD36926E791D25FF3AC3604893F4C5" blockId="44.[151,1436,1825,2032]" lastBlockId="45.[151,1437,151,393]" lastPageId="45" lastPageNumber="346" pageId="44" pageNumber="345">
<emphasis id="B916EA806E791D24FF3AC3604B07F277" bold="true" box="[151,284,1825,1851]" pageId="44" pageNumber="345">Discussion.</emphasis>
<bibRefCitation id="EFF34B636E791D24FE8FC3604BBEF270" author="Reed, F. R. C." box="[290,421,1825,1852]" pageId="44" pageNumber="345" pagination="1 - 98" refId="ref46807" refString="Reed, F. R. C. (1915) Supplementary Memoir on new Ordovician and Silurian fossils from the Northern Shan States. Palaeontologia Indica, New Series 6, 1 - 98." type="book chapter" year="1915">Reed (1915</bibRefCitation>
,
<bibRefCitation id="EFF34B636E791D24FE1CC3604BF1F277" author="Reed, F. R. C." box="[433,490,1825,1851]" pageId="44" pageNumber="345" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">1917</bibRefCitation>
) described a number of
<taxonomicName id="4C624D116E791D24FD58C36049BCF277" box="[757,935,1825,1851]" pageId="44" pageNumber="345">
<emphasis id="B916EA806E791D24FD58C3604954F277" box="[757,847,1825,1851]" italics="true" pageId="44" pageNumber="345">Illaenus</emphasis>
species
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from both the northern part of the
<collectingRegion id="49A6F8706E791D24FA8BC3604F87F277" box="[1318,1436,1825,1851]" country="Myanmar" name="Shan" pageId="44" pageNumber="345">Shan State</collectingRegion>
and western
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, mostly from fragmentary material. Attempts to make casts from the illustrated specimens were variably successful, but are included here for the sake of completeness. Since the classic works of
<bibRefCitation id="EFF34B636E791D24FB77C32B4F87F2C8" author="Jaanusson, V." box="[1242,1436,1897,1924]" pageId="44" pageNumber="345" pagination="545 - 583" refId="ref44843" refString="Jaanusson, V. (1954) Zur Morphologie und Taxonomie der Illaeniden. Arkiv for Mineralogioch Geologi, 1, 545 - 583." type="journal article" year="1954">Jaanusson (1954)</bibRefCitation>
and
<bibRefCitation id="EFF34B636E791D24FF65C3CF4BCAF2EB" author="Bruton, D. L. &amp; Owen, A. W." box="[200,465,1933,1960]" pageId="44" pageNumber="345" pagination="241 - 258" refId="ref42842" refString="Bruton, D. L. &amp; Owen, A. W. (1988) The Norwegian Upper Ordovician illaenid trilobites. Norsk Geologisk Tidsskrift, 68, 241 - 258." type="journal article" year="1988">Bruton &amp; Owen (1988)</bibRefCitation>
it has been clear that for meaningful systematics of
<taxonomicName id="4C624D116E791D24FB89C3CC4ECCF2EB" box="[1060,1239,1933,1959]" pageId="44" pageNumber="345">
<emphasis id="B916EA806E791D24FB89C3CC4E65F2EB" box="[1060,1150,1933,1959]" italics="true" pageId="44" pageNumber="345">Illaenus</emphasis>
species
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it is necessary to know such features as the dorsal surface sculpture, particularly on the cephalon, details of muscle insertion areas, and such ventral features as the outline and extent of the pygidial doublure. Reeds specimens do not show most of these important features, and are not determinable in a modern way. Only one species,
<taxonomicName id="4C624D116E781D25FB2AC4D64F4CF5FD" authorityName="Reed, Complete" authorityYear="1917" box="[1159,1367,151,177]" class="Trilobita" family="Illaenidae" genus="Illaenus" kingdom="Animalia" order="Corynexochida" pageId="45" pageNumber="346" phylum="Arthropoda" rank="species" species="caecoides">
<emphasis id="B916EA806E781D25FB2AC4D64F4CF5FD" box="[1159,1367,151,177]" italics="true" pageId="45" pageNumber="346">Illaenus caecoides</emphasis>
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, from Shihtien,
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, was formally named. One cranidial fragment from
<collectingRegion id="49A6F8706E781D25FC05C4FA49E5F599" box="[936,1022,187,213]" country="China" name="Yunnan" pageId="45" pageNumber="346">Yunnan</collectingRegion>
illustrated by
<bibRefCitation id="EFF34B636E781D25FB0FC4FA4F33F599" author="Reed, F. R. C." box="[1186,1320,187,213]" pageId="45" pageNumber="346" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917</bibRefCitation>
, pl. 8, fig. 3) as
<taxonomicName id="4C624D116E781D25FF78C49E4B34F5B5" box="[213,303,223,249]" class="Trilobita" family="Illaenidae" genus="Illaenus" kingdom="Animalia" order="Corynexochida" pageId="45" pageNumber="346" phylum="Arthropoda" rank="genus">
<emphasis id="B916EA806E781D25FF78C49E4B34F5B5" box="[213,303,223,249]" italics="true" pageId="45" pageNumber="346">Illaenus</emphasis>
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cf.
<emphasis id="B916EA806E781D25FEF1C49E4BC3F5B4" box="[348,472,223,248]" italics="true" pageId="45" pageNumber="346">tauricornis</emphasis>
is not only incomplete, but also an internal mould, and very distorted. It is not worth re-illustrating. Two other fragmentary illaenids from
<collectingRegion id="49A6F8706E781D25FD42C542495EF451" box="[751,837,259,285]" country="China" name="Yunnan" pageId="45" pageNumber="346">Yunnan</collectingRegion>
described by
<bibRefCitation id="EFF34B636E781D25FC49C5424E6AF451" author="Reed, F. R. C." box="[996,1137,259,285]" pageId="45" pageNumber="346" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917)</bibRefCitation>
as
<emphasis id="B916EA806E781D25FB35C5424EFCF451" box="[1176,1255,259,285]" italics="true" pageId="45" pageNumber="346">Illaenu</emphasis>
s cf.
<emphasis id="B916EA806E781D25FA8DC5424F87F451" box="[1312,1436,259,285]" italics="true" pageId="45" pageNumber="346">oblongatus</emphasis>
and
<emphasis id="B916EA806E781D25FF68C5664ACDF40C" box="[197,214,295,320]" italics="true" pageId="45" pageNumber="346">I.</emphasis>
aff
<emphasis id="B916EA806E781D25FEADC5664B9DF40D" box="[256,390,295,321]" italics="true" pageId="45" pageNumber="346">punctulosus</emphasis>
, were not successfully cast, and are not discussed in this paper. There is no reason to reproduce Reeds original remarks for the illaenids and only brief comments will be given here. All except
<taxonomicName id="4C624D116E781D25FB75C50A4F45F429" authorityName="Reed, Complete" authorityYear="1917" box="[1240,1374,331,357]" class="Trilobita" family="Illaenidae" genus="Illaenus" kingdom="Animalia" order="Corynexochida" pageId="45" pageNumber="346" phylum="Arthropoda" rank="species" species="caecoides">
<emphasis id="B916EA806E781D25FB75C50A4F45F429" box="[1240,1374,331,357]" italics="true" pageId="45" pageNumber="346">I. caecoides</emphasis>
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were recorded by Reed under open nomenclature.
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