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<document ID-DOI="http://doi.org/10.5281/zenodo.3681411" ID-GBIF-Dataset="246dae96-99ed-4bb9-9ae7-b0223b873cf6" ID-GBIF-Taxon="161671676" ID-Zenodo-Dep="3681411" approvalRequired="20" approvalRequired_for_bibRefs="4" approvalRequired_for_taxonomicNames="1" approvalRequired_for_textStreams="11" approvalRequired_for_treatments="4" baseAuthorityName="Parks" baseAuthorityYear="1928" checkinTime="1582190017096" checkinUser="jeremy" class="Reptilia" docAuthor="Currie, P. J." docDate="1987" docId="03EBA441FF9E844FC7EFFE07F2D5D543" docLanguage="en" docName="Currie1987.pdf.imf" docOrigin="Fourth Symposium on Mesozoic Terrestrial Ecosystems, Drumheller, Alberta: Tyrrell Museum of Paleontology" docStyle="DocumentStyle{}" docTitle="Dromiceiomimus" docType="treatment" docVersion="11" family="Ornithomimidae" genus="Dromiceiomimus" kingdom="Animalia" lastPageNumber="53" masterDocId="FFD2DC39FF9C844DC72CFF93F347D01B" masterDocTitle="Theropods of the Judith River Formation of dinosaur Provincial Park, Alberta, Canada" masterLastPageNumber="60" masterPageNumber="51" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species" species="samueli" updateTime="1636540795418" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Theropods of the Judith River Formation of dinosaur Provincial Park, Alberta, Canada</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Currie, P. J.</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:originInfo>
<mods:dateIssued>1987</mods:dateIssued>
<mods:dateOther type="pubDate">1987-12-31</mods:dateOther>
<mods:publisher>Tyrrell Museum of Paleontology</mods:publisher>
<mods:place>
<mods:placeTerm>Drumheller, Alberta</mods:placeTerm>
</mods:place>
</mods:originInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Editor</mods:roleTerm>
</mods:role>
<mods:namePart>Currie P. J.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Editor</mods:roleTerm>
</mods:role>
<mods:namePart>Koster E. H.</mods:namePart>
</mods:name>
<mods:titleInfo>
<mods:title>Fourth Symposium on Mesozoic Terrestrial Ecosystems</mods:title>
</mods:titleInfo>
<mods:part>
<mods:extent unit="page">
<mods:start>51</mods:start>
<mods:end>60</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification>book chapter</mods:classification>
<mods:identifier type="DOI">http://doi.org/10.5281/zenodo.3676391</mods:identifier>
<mods:identifier type="GBIF-Dataset">246dae96-99ed-4bb9-9ae7-b0223b873cf6</mods:identifier>
<mods:identifier type="Zenodo-Dep">3676391</mods:identifier>
</mods:mods>
<treatment ID-DOI="http://doi.org/10.5281/zenodo.3681411" ID-GBIF-Taxon="161671676" ID-Zenodo-Dep="3681411" LSID="urn:lsid:plazi:treatment:03EBA441FF9E844FC7EFFE07F2D5D543" baseAuthorityName="Parks" baseAuthorityYear="1928" class="Reptilia" family="Ornithomimidae" genus="Dromiceiomimus" httpUri="http://treatment.plazi.org/id/03EBA441FF9E844FC7EFFE07F2D5D543" kingdom="Animalia" lastPageNumber="53" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species" species="samueli">
<subSubSection pageId="2" pageNumber="53" type="nomenclature">
<paragraph blockId="2.[149,993,210,1066]" pageId="2" pageNumber="53">
<emphasis box="[195,320,404,417]" italics="true" pageId="2" pageNumber="53">Ornithomimid</emphasis>
frontals are
<emphasis box="[482,523,407,421]" italics="true" pageId="2" pageNumber="53">very</emphasis>
rare. Cranial bones in
<emphasis box="[807,858,403,417]" italics="true" pageId="2" pageNumber="53">these</emphasis>
animals are much lighter than those of other theropods both in
<emphasis box="[792,884,425,439]" italics="true" pageId="2" pageNumber="53">terms of</emphasis>
relative
<emphasis box="[153,248,446,464]" italics="true" pageId="2" pageNumber="53">thickness</emphasis>
, and the
<emphasis box="[360,469,446,463]" italics="true" pageId="2" pageNumber="53">density of</emphasis>
the spongy bone layer. Consequently, they
<emphasis box="[961,992,449,462]" italics="true" pageId="2" pageNumber="53">may</emphasis>
have been preserved less frequently because of their fragility. As in troodontids,
<emphasis box="[294,324,489,503]" italics="true" pageId="2" pageNumber="53">the</emphasis>
frontal of
<taxonomicName authority="" authorityName="" baseAuthorityName="Parks" baseAuthorityYear="1928" box="[464,611,490,504]" class="Reptilia" family="Ornithomimidae" genus="Dromiceiomimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species">
<emphasis box="[464,611,490,504]" italics="true" pageId="2" pageNumber="53">Dromiceiomimus</emphasis>
</taxonomicName>
<emphasis bold="true" box="[627,645,490,503]" pageId="2" pageNumber="53">is</emphasis>
long and triangular (
<figureCitation box="[894,974,487,507]" captionStart="FIG. 1" captionStartId="5.[93,121,1322,1333]" captionTargetBox="[183,864,202,1302]" captionTargetPageId="5" captionText="FIG. 1 Theropod frontals from Dinosaur Provincial Park. (a) Troodon formosus. TMP 86.49. 10; (b) Dromicelomimus samueli, TMP 85.56.62; (c) cf. Erilcosaurus sp., NMC 12355; (d) Saurornitholestes langstoni, TMP 86. 77. 57; (e) Dromaeosaurus albertensis, NMC 12349, AMNH 5356; (f) cf. Aublysodon sp., TMP 80.16.485; (g) cf. Gorgosaurus libratus, TMP 80.16.924; (h) Daspletosaurus torosus (after Russell. 1970). (1) Caudal limit of dorsalateral exposure of the lacrimal; (2) caudal limit of orbital rim; (3) caudal limit of postorbital suture; (4) lacrimal slot; (5) Postorbital buttress. Scale= 1cm." figureDoi="http://doi.org/10.5281/zenodo.3676393" httpUri="https://zenodo.org/record/3676393/files/figure.png" pageId="2" pageNumber="53">Fig. 1b</figureCitation>
).
<emphasis box="[151,204,512,525]" italics="true" pageId="2" pageNumber="53">There</emphasis>
<emphasis bold="true" box="[232,284,512,525]" pageId="2" pageNumber="53">is a</emphasis>
<emphasis box="[309,451,512,525]" italics="true" pageId="2" pageNumber="53">distinct but</emphasis>
shallow
<emphasis bold="true" box="[576,648,512,525]" pageId="2" pageNumber="53">sutural</emphasis>
surface for the
<emphasis box="[886,991,511,529]" italics="true" pageId="2" pageNumber="53">prefrontal</emphasis>
rostrodorsally. The lacrimal
<emphasis box="[473,546,535,547]" italics="true" pageId="2" pageNumber="53">contact</emphasis>
is unusual in that it is a long tapering suture on the
<emphasis bold="true" box="[329,467,555,569]" pageId="2" pageNumber="53">rostrolateral</emphasis>
surface of the frontal. Unlike
<emphasis box="[876,917,557,569]" italics="true" pageId="2" pageNumber="53">most</emphasis>
other
<emphasis box="[154,248,577,593]" italics="true" pageId="2" pageNumber="53">theropods</emphasis>
, there is
<emphasis box="[377,386,580,590]" italics="true" pageId="2" pageNumber="53">a</emphasis>
simple process of the nasal overlapping
<emphasis box="[861,890,575,589]" italics="true" pageId="2" pageNumber="53">the</emphasis>
frontal. The dorsal surface of the frontal is almost flat in the interorbital region, but caudally
<emphasis box="[292,355,624,634]" italics="true" pageId="2" pageNumber="53">curves</emphasis>
posteroventrally in an
<emphasis bold="true" box="[620,683,620,634]" pageId="2" pageNumber="53">almost</emphasis>
bulbous fashion to
<emphasis box="[905,946,621,633]" italics="true" pageId="2" pageNumber="53">meet</emphasis>
the parietal. The anterior
<emphasis box="[411,475,642,659]" italics="true" pageId="2" pageNumber="53">margin</emphasis>
of the supratemporal fenestra
<emphasis bold="true" box="[817,836,642,655]" pageId="2" pageNumber="53">is</emphasis>
not
<emphasis bold="true" box="[893,957,641,655]" pageId="2" pageNumber="53">marked</emphasis>
by a well-defined
<emphasis box="[312,345,663,677]" italics="true" pageId="2" pageNumber="53">rim</emphasis>
.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="53" type="discussion">
<paragraph blockId="2.[149,993,210,1066]" pageId="2" pageNumber="53">
<emphasis box="[194,224,684,698]" italics="true" pageId="2" pageNumber="53">The</emphasis>
frontals of
<taxonomicName baseAuthorityName="Lambe" baseAuthorityYear="1902" box="[408,623,684,698]" class="Reptilia" family="Ornithomimidae" genus="Struthiomimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species" species="altus">Struthiomimus altus</taxonomicName>
(
<materialsCitation ID-GBIF-Occurrence="2545510080" box="[656,771,682,699]" collectionCode="AMNH" pageId="2" pageNumber="53" specimenCode="AMNH 5355">
<specimenCode box="[656,771,682,699]" pageId="2" pageNumber="53">AMNH 5355</specimenCode>
</materialsCitation>
) and
<taxonomicName authorityName="Sternberg" authorityYear="1933" class="Reptilia" family="Ornithomimidae" genus="Ornithomimus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species" species="edmontonicus">
<emphasis italics="true" pageId="2" pageNumber="53">Ornithomimus edmontonicus</emphasis>
</taxonomicName>
(
<materialsCitation ID-GBIF-Occurrence="2545510075" box="[299,381,705,722]" collectionCode="ROM" pageId="2" pageNumber="53" specimenCode="ROM 851">
<specimenCode box="[299,381,705,722]" pageId="2" pageNumber="53">ROM 851</specimenCode>
</materialsCitation>
,
<emphasis box="[407,502,706,720]" italics="true" pageId="2" pageNumber="53">Horseshoe</emphasis>
Canyon
<emphasis box="[597,694,704,720]" italics="true" pageId="2" pageNumber="53">Formation</emphasis>
) are essentially identical to
<emphasis box="[185,417,727,741]" italics="true" pageId="2" pageNumber="53">
that of
<taxonomicName authorityName="Russell" authorityYear="1972" box="[268,505,727,741]" class="Reptilia" family="Ornithomimidae" genus="Dromiceiomimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="species" species="samueli">Dromiceiomimus samueli</taxonomicName>
</emphasis>
.
</paragraph>
<paragraph blockId="2.[149,993,210,1066]" pageId="2" pageNumber="53">
Sues (1978) briefly described an
<emphasis box="[558,693,749,762]" italics="true" pageId="2" pageNumber="53">indeterminate</emphasis>
frontal in the collections of the National Museum of Canada (
<materialsCitation ID-GBIF-Occurrence="2545510071" box="[523,626,769,787]" collectionCode="NMC" pageId="2" pageNumber="53" specimenCode="NMC 12355">
<specimenCode box="[523,626,769,787]" pageId="2" pageNumber="53">NMC 12355</specimenCode>
</materialsCitation>
,
<figureCitation box="[648,725,769,788]" captionStart="FIG. 1" captionStartId="5.[93,121,1322,1333]" captionTargetBox="[183,864,202,1302]" captionTargetPageId="5" captionText="FIG. 1 Theropod frontals from Dinosaur Provincial Park. (a) Troodon formosus. TMP 86.49. 10; (b) Dromicelomimus samueli, TMP 85.56.62; (c) cf. Erilcosaurus sp., NMC 12355; (d) Saurornitholestes langstoni, TMP 86. 77. 57; (e) Dromaeosaurus albertensis, NMC 12349, AMNH 5356; (f) cf. Aublysodon sp., TMP 80.16.485; (g) cf. Gorgosaurus libratus, TMP 80.16.924; (h) Daspletosaurus torosus (after Russell. 1970). (1) Caudal limit of dorsalateral exposure of the lacrimal; (2) caudal limit of orbital rim; (3) caudal limit of postorbital suture; (4) lacrimal slot; (5) Postorbital buttress. Scale= 1cm." figureDoi="http://doi.org/10.5281/zenodo.3676393" httpUri="https://zenodo.org/record/3676393/files/figure.png" pageId="2" pageNumber="53">Fig. 1C</figureCitation>
) and
<emphasis bold="true" box="[793,875,770,784]" pageId="2" pageNumber="53">referred</emphasis>
it to
<emphasis italics="true" pageId="2" pageNumber="53">
the
<taxonomicName authorityName="Marsb" authorityYear="1881" box="[152,249,792,809]" clade="Therapoda" class="Reptilia" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="clade">Theropoda</taxonomicName>
</emphasis>
.
<emphasis box="[281,357,792,809]" italics="true" pageId="2" pageNumber="53">However</emphasis>
,
<emphasis box="[379,540,792,808]" italics="true" pageId="2" pageNumber="53">comparison with</emphasis>
Mongolian specimens suggests that it
<emphasis box="[960,991,796,809]" italics="true" pageId="2" pageNumber="53">may</emphasis>
<emphasis bold="true" box="[152,244,816,831]" pageId="2" pageNumber="53">represent</emphasis>
<taxonomicName authority="Perle, 1981" authorityName="Perle" authorityYear="1981" box="[262,389,814,828]" class="Reptilia" family="Segnosauridae" genus="Erlicosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Saurischia" pageId="2" pageNumber="53" phylum="Chordata" rank="genus">Erlicosaurus</taxonomicName>
(
<emphasis bold="true" box="[416,484,812,830]" pageId="2" pageNumber="53">Currie</emphasis>
, in preparation), a genus that is currently regarded as a Late Cretaceous prosaurupod (Paul 1984). The frontal suture of an isolated caenagnathid
<emphasis bold="true" box="[441,524,856,873]" pageId="2" pageNumber="53">parietal</emphasis>
(
<materialsCitation ID-GBIF-Occurrence="2545510068" box="[550,703,854,872]" collectionCode="TMP" pageId="2" pageNumber="53" specimenCode="TMP 81.19.252">
<specimenCode box="[550,703,854,872]" pageId="2" pageNumber="53">
TMP 81. 1 9.
<emphasis box="[660,691,855,872]" italics="true" pageId="2" pageNumber="53">25</emphasis>
2
</specimenCode>
</materialsCitation>
, Currie, in preparation)
<emphasis bold="true" box="[153,204,876,890]" italics="true" pageId="2" pageNumber="53">shows</emphasis>
that
<materialsCitation ID-GBIF-Occurrence="2545510072" box="[267,363,875,890]" collectionCode="NMC" pageId="2" pageNumber="53" specimenCode="NMC 12355">NMC 12355</materialsCitation>
is not a
<emphasis box="[473,602,876,894]" italics="true" pageId="2" pageNumber="53">caenagnsthid</emphasis>
, but it still
<emphasis box="[763,794,880,893]" italics="true" pageId="2" pageNumber="53">may</emphasis>
turn out to be
<emphasis bold="true" box="[970,990,880,890]" pageId="2" pageNumber="53">an</emphasis>
elmisaurid or other
<emphasis box="[383,471,899,916]" italics="true" pageId="2" pageNumber="53">theropod</emphasis>
.
<emphasis box="[507,548,898,912]" italics="true" pageId="2" pageNumber="53">This</emphasis>
<emphasis bold="true" box="[567,678,899,912]" pageId="2" pageNumber="53">frontal is</emphasis>
an
<emphasis bold="true" box="[735,818,899,916]" pageId="2" pageNumber="53">elongate</emphasis>
triangle, like
<emphasis bold="true" box="[152,204,920,933]" pageId="2" pageNumber="53">those</emphasis>
<emphasis box="[224,380,920,934]" italics="true" pageId="2" pageNumber="53">of troodontids</emphasis>
and
<emphasis box="[454,594,920,934]" italics="true" pageId="2" pageNumber="53">ornithomimids</emphasis>
. A shallow, rostrodorsal sutural
<emphasis bold="true" box="[152,225,941,955]" pageId="2" pageNumber="53">surface</emphasis>
suggests that the prefrontal
<emphasis box="[555,586,946,956]" italics="true" pageId="2" pageNumber="53">was</emphasis>
present and in the
<emphasis box="[815,990,942,959]" italics="true" pageId="2" pageNumber="53">same position as</emphasis>
in
<emphasis box="[193,331,963,977]" italics="true" pageId="2" pageNumber="53">ornithomimids</emphasis>
. The caudolateral
<emphasis box="[568,630,964,981]" italics="true" pageId="2" pageNumber="53">margin</emphasis>
of the ventral suture of the lacrimal
<emphasis bold="true" box="[258,276,985,998]" pageId="2" pageNumber="53">is</emphasis>
a
<emphasis bold="true" box="[328,497,984,999]" pageId="2" pageNumber="53">transverse wall</emphasis>
of bone similar to
<emphasis box="[760,840,985,999]" italics="true" pageId="2" pageNumber="53">that of</emphasis>
<taxonomicName box="[864,941,985,999]" class="Reptilia" family="Troodontidae" genus="Troodon" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="genus">Troodon</taxonomicName>
.
<emphasis box="[980,991,985,999]" italics="true" pageId="2" pageNumber="53">A</emphasis>
longitudinal trough runs along the dorsal
<emphasis bold="true" box="[614,687,1007,1020]" pageId="2" pageNumber="53">surface</emphasis>
of
<emphasis box="[739,768,1006,1020]" italics="true" pageId="2" pageNumber="53">the</emphasis>
frontal between
<emphasis box="[960,990,1007,1021]" italics="true" pageId="2" pageNumber="53">the</emphasis>
midline and the orbital
<emphasis box="[441,474,1028,1042]" italics="true" pageId="2" pageNumber="53">rim</emphasis>
.
<emphasis box="[512,523,1028,1041]" italics="true" pageId="2" pageNumber="53">A</emphasis>
poorly defined ridge
<emphasis box="[790,843,1029,1042]" italics="true" pageId="2" pageNumber="53">marks</emphasis>
the
<emphasis bold="true" box="[917,989,1029,1043]" pageId="2" pageNumber="53">rostral</emphasis>
boundary of the supratemporal fenestra.
</paragraph>
<paragraph blockId="2.[147,991,1091,1369]" pageId="2" pageNumber="53">
Dromaeosaurid frontals (
<figureCitation box="[458,594,1091,1110]" captionStart="FIG. 1" captionStartId="5.[93,121,1322,1333]" captionTargetBox="[183,864,202,1302]" captionTargetPageId="5" captionText="FIG. 1 Theropod frontals from Dinosaur Provincial Park. (a) Troodon formosus. TMP 86.49. 10; (b) Dromicelomimus samueli, TMP 85.56.62; (c) cf. Erilcosaurus sp., NMC 12355; (d) Saurornitholestes langstoni, TMP 86. 77. 57; (e) Dromaeosaurus albertensis, NMC 12349, AMNH 5356; (f) cf. Aublysodon sp., TMP 80.16.485; (g) cf. Gorgosaurus libratus, TMP 80.16.924; (h) Daspletosaurus torosus (after Russell. 1970). (1) Caudal limit of dorsalateral exposure of the lacrimal; (2) caudal limit of orbital rim; (3) caudal limit of postorbital suture; (4) lacrimal slot; (5) Postorbital buttress. Scale= 1cm." figureDoi="http://doi.org/10.5281/zenodo.3676393" httpUri="https://zenodo.org/record/3676393/files/figure.png" pageId="2" pageNumber="53">
<emphasis bold="true" box="[458,501,1091,1110]" pageId="2" pageNumber="53">Figs</emphasis>
. 1d, 1e
</figureCitation>
,
<figureCitation box="[619,629,1091,1107]" captionStart="FIG. 3" captionStartId="7.[98,123,1489,1502]" captionTargetBox="[0,1047,0,1479]" captionTargetPageId="7" captionText="FIG. 3 Saurornitholestes langstoni (TMP 80. 16. 312). Left frontal in (a) dorsal, (b) ventral, (c) medial and (d) posterior views. Scale= 1cm." figureDoi="http://doi.org/10.5281/zenodo.3676397" httpUri="https://zenodo.org/record/3676397/files/figure.png" pageId="2" pageNumber="53">3</figureCitation>
) are readily distinguished from those
<emphasis bold="true" box="[224,316,1113,1127]" pageId="2" pageNumber="53">of other</emphasis>
theropods.
<emphasis box="[472,513,1115,1131]" italics="true" pageId="2" pageNumber="53">They</emphasis>
<emphasis bold="true" box="[532,564,1118,1128]" pageId="2" pageNumber="53">are</emphasis>
relatively shorter and broader than
<emphasis box="[150,256,1135,1150]" italics="true" pageId="2" pageNumber="53">troodontid</emphasis>
and ornithomimid frontals. In ventral
<emphasis box="[715,759,1136,1153]" italics="true" pageId="2" pageNumber="53">view</emphasis>
,
<emphasis box="[784,814,1136,1150]" italics="true" pageId="2" pageNumber="53">the</emphasis>
orbital
<emphasis box="[922,953,1137,1150]" italics="true" pageId="2" pageNumber="53">rim</emphasis>
is split rostrolaterally, and the lacrimal
<emphasis bold="true" box="[608,670,1161,1175]" pageId="2" pageNumber="53">passes</emphasis>
through this slot onto the dorsal
<emphasis bold="true" box="[229,302,1179,1192]" pageId="2" pageNumber="53">surface</emphasis>
of the bone.
<emphasis box="[475,550,1180,1193]" italics="true" pageId="2" pageNumber="53">This is</emphasis>
<emphasis bold="true" box="[566,607,1183,1196]" pageId="2" pageNumber="53">very</emphasis>
different from
<emphasis box="[792,821,1180,1193]" italics="true" pageId="2" pageNumber="53">the</emphasis>
broad lacrimal suture on ventral surface of the frontals of
<taxonomicName box="[660,734,1201,1215]" class="Reptilia" family="Troodontidae" genus="Troodon" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="2" pageNumber="53" phylum="Chordata" rank="genus">Troodon</taxonomicName>
and
<materialsCitation ID-GBIF-Occurrence="2545510064" box="[796,899,1201,1219]" collectionCode="NMC" pageId="2" pageNumber="53" specimenCode="NMC 12355">
<emphasis box="[796,828,1202,1215]" italics="true" pageId="2" pageNumber="53">NMC</emphasis>
12355
</materialsCitation>
, but
<emphasis box="[971,989,1202,1216]" italics="true" pageId="2" pageNumber="53">is</emphasis>
comparable
<emphasis box="[274,375,1222,1236]" italics="true" pageId="2" pageNumber="53">with this</emphasis>
part of the frontolacrimal suture of tyrannosaurids. Rostrodorsally, the dromaeosaurid frontal
<emphasis box="[609,639,1245,1259]" italics="true" pageId="2" pageNumber="53">has</emphasis>
a
<emphasis box="[679,764,1249,1262]" italics="true" pageId="2" pageNumber="53">squamose</emphasis>
sutural surface for
<emphasis box="[149,179,1266,1280]" italics="true" pageId="2" pageNumber="53">the</emphasis>
nasal and prefrontal bones. In dorsal view, the postorbital process of the frontal diverges strongly
<emphasis box="[512,553,1288,1302]" italics="true" pageId="2" pageNumber="53">from</emphasis>
the
<emphasis bold="true" box="[629,669,1290,1302]" pageId="2" pageNumber="53">rest</emphasis>
of the orbital
<emphasis box="[885,917,1289,1303]" italics="true" pageId="2" pageNumber="53">rim</emphasis>
.
<emphasis box="[958,988,1290,1303]" italics="true" pageId="2" pageNumber="53">The</emphasis>
postorbital suture
<emphasis box="[364,436,1308,1322]" italics="true" pageId="2" pageNumber="53">extends</emphasis>
onto the caudodorsal surface of the postorbital process, and is not well defined. The frontal is only shallowly dished out in the interorbital region.
</paragraph>
</subSubSection>
</treatment>
</document>
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