2026-10-12T03:01:29Z
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2026-09-30T17:26:00Z
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<p>Differentially diagnostic features of <i>Falcarius utahensis</i> (A, C, F, H) and <i>Fa. suarezarum</i> (B, D, E, G, I).</p>
William J. Freimuth (22495838)
Joshua R. Lively (9409306)
Lindsay E. Zanno (11506677)
Physiology
Evolutionary Biology
Environmental Sciences not elsewhere classified
Ecology
Biological Sciences not elsewhere classified
suarez site bonebed
shared maxillary proportions
labially convex morphology
div >< p
phylogenetic analyses recover
monodominant therizinosaurian bonebed
isolated maxilla recovered
geminiraptor suarezarum </
falcarius utahensis </
falcarius suarezarum </
early therizinosaurian crania
geminiraptor </
phylogenetic datasets
beipiaosaurus </
geminiraptor .</
early therizinosaurians
usa ).
understanding evolutionary
sister taxon
restricts definitive
reidentify “<
recorded member
possible lacrimal
poor understanding
original description
novel combination
north america
mosaic evolution
morphometric analyses
minute denticles
like troodontidae
key taxon
holotype maxilla
geologically oldest
g .,
fragmentary braincase
fourth therizinosaurian
earliest cretaceous
cranial bones
converged upon
coelurosaurian maxillae
carnivorous diet
biogeographic patterns
basal swelling
<p>Numbered features correspond to those listed in the <i>Fa. utahensis</i> and <i>Fa. suarezarum</i> species diagnoses. (A–D) Left maxillae in caudomedial view (A–B) and lateral view (C–D), highlighting relationships of the antorbital sinus (red) and maxillary antrum (yellow) (A, NCSM 39000; B, CEUM 73719). (C–E) Postorbitals in medial view (C, NCSM 39106 [reversed]; D, CEUM 73942; E, CEUM 73787). (F–G) Quadrates in caudal view (F, UMNH VP 14559 [right quadrate]; G, CEUM 73773 [left quadrate]). (H–I) Dentary teeth in lingual view (H, 14th dentary tooth of UMNH VP 15259; I, 12th dentary tooth of CEUM 77263). Scale bar is 1 cm (A–G), 1 mm (H–I).</p>
2026-09-30T17:25:52Z
Image
Figure
10.1371/journal.pone.0356471.g005
https://figshare.com/articles/figure/_p_Differentially_diagnostic_features_of_i_Falcarius_utahensis_i_A_C_F_H_and_i_Fa_suarezarum_i_B_D_E_G_I_p_/34034541
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