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Ornithomimus velox

Reptilia - Avetheropoda - Ornithomimidae

Taxonomy
Ornithomimus velox was named by Marsh (1890). Its type specimen is YPM 542, a set of limb elements, and it is a 3D body fossil. Its type locality is Beaver Creek Valley (YPM 542), which is in a Maastrichtian terrestrial horizon in the Denver Formation of Colorado.

Synonymy list
YearName and author
1890Ornithomimus velox Cannon p. 253
1890Ornithomimus velox Marsh pp. 84-85 figs. 1-4
1890Ornithomimus velox Zittel p. 767
1896Ornithomimus velox Marsh p. 204
1902Ornithomimus velox Hay p. 494
1904Ornithomimus velox Lambe p. 33
1905Ornithomimus velox Lambe p. 23
1906Ornithomimus velox Cannon p. 197
1916Ornithomimus velox Osborn pp. 738-740
1920Ornithomimus velox Gilmore p. 131
1922Ornithomimus velox Matthew and Brown p. 377
1927Ornithomimus velox Huene p. 260
1930Ornithomimus velox Russell p. 155
1931Ornithomimus velox Johnson p. 374
1964Ornithomimus velox Tatarinov p. 533
1970Ornithomimus velox Steel p. 19
1970Ornithomimus velox Swinton p. 130
1972Ornithomimus velox Osmólska et al. p. 138
1972Ornithomimus velox Russell pp. 379-381
1980Ornithomimus velox Molnar and Pledge p. 286
1981Ornithomimus velox Nicholls and Russell p. 521
1985Ornithomimus velox DeCourten and Russell p. 1093
1986Ornithomimus velox Gauthier p. 10
1988Ornithomimus velox Paul p. 392
1996Ornithomimus velox Novas p. 676
2003Ornithomimus velox Rauhut p. 38
2004Ornithomimus velox Makovicky et al. p. 138
2008Ornithomimus velox Longrich p. 983
2009Ornithomimus velox Buffetaut et al. p. 234
2016Ornithomimus velox Claessens and Loewen p. 2–4
2016Ornithomimus velox Serrano-Brañas et al. p. 49
2018Ornithomimus velox Hunt and Quinn p. 4

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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()
Eosuchia()
Neodiapsida
RankNameAuthor
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
Maniraptoriformes
Arctometatarsalia
infraorderOrnithomimosauria
familyOrnithomimidae
genusOrnithomimus
speciesvelox

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
L. P. A. Claessens and M. A. Loewen 2016Ornithomimid with the following autapomorphies: relatively short and robust metatarsus, with maximum relative width of metatarsal (MT) III exceeding that of any known ornithomimid. Ratio of maximum MT III diaphysis anteroposterior width divided by length of MT III is 11%. Relatively short metatarsus in comparison with hand. Metacarpal (MC) I and MC II are apposed for a relatively short distance, along the first quarter of their total length. A shared synapomorphy for the genus is the length of MC I being greater than that of MC II, and MC II being greater than MC III (MC I > MC II > MC III).