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Uteodon aphanoecetes

Reptilia -

Taxonomy
Camptosaurus aphanoecetes was named by Carpenter and Wilson (2008). Its type specimen is CM 11337, a partial skeleton, and it is a 3D body fossil. Its type locality is Dinosaur National Monument Quarry (CM), which is in a Tithonian coarse channel fill sandstone in the Morrison Formation of Utah.

It was recombined as Uteodon aphanoecetes by McDonald (2011), Zheng et al. (2013) and Madzia et al. (2018).

Synonymy list
YearName and author
2008Camptosaurus aphanoecetes Carpenter and Wilson p. 232 figs. 3-34
2008Camptosaurus aphanoecetes Ruiz-Omeñaca et al. p. 61
2011Uteodon aphanoecetes McDonald pp. 56 - 60 figs. 6, 7B
2011Camptosaurus aphanoecetes Wang et al. p. 140
2013Uteodon aphanoecetes Zheng et al.
2018Uteodon aphanoecetes Madzia et al. p. 971

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Ornithopoda()
Iguanodontia()
Dryomorpha
Ankylopollexia
Styracosterna
genusUteodon
speciesaphanoecetes()

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
K. Carpenter and Y. Wilson 2008Differs from C. dispar in the following: mandibular symphysis short and more vertically oriented, coronoid process relatively taller; postzygapophyses of axis extend well beyond posterior face of centrum, axis neural spine above the postzygapophyses laterally compressed, not expanded laterally forming deep pocket; cervical centra shorter compared to height, especially in mid-cervicals; mid- and posterior cervicals amphiplatyan to weakly plani-concave, not opisthocoelous; cervical 7 centrum wedge-shaped in lateral view; neural arches of posterior cervicals very tall; anterior dorsal centra shorter compared to height; anterior caudal centra not angled posteroventrally, mid-caudal centrum with small chevron facet; mid-caudal vertebra neural spine long and slender, with postzygapophysis located high on spine; scapular blade arched in profile, not straight, and distal end steeply sloped; deltopectoral crest a low triangle, not prominent; ilium with more vertical pubic peduncle, dorsal rim arched, prepubic process proportionally longer, postpubic process lower, with rounded distal end; pubis with posterior projecting iliac peduncle forming large acetabular notch; ischium with small distal foot.
A. T. McDonald 2011Basal styracosternan distinguished by a single autapomorphy: occipital condyle projects farther ventrally than the basal tubera (Fig. 7). Also distinguished from all other iguanodontians except Cumnoria prestwichii by the following unique combination of characters: scapula with acromion process that is convex along its cranial margin (Fig. 3B), convex dorsal margin of scapula (Fig. 3C), convex dorsal margin of ilium, dorsal mar- gin of ilium thickens mediolaterally towards M. iliocaudalis platform, postacetabular process of ilium tapers to a point with break in slope along dorsal margin (Fig. 6A), distal end of ischium forms cranially expanded boot.