Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Osmakasaurus depressus

Reptilia -

Taxonomy
Camptosaurus depressus was named by Gilmore (1909). It is not extant. Its type specimen is USNM 4753. Its type locality is Calico Canyon (USNM), which is in a Barremian terrestrial horizon in the Lakota Formation of South Dakota.

It was recombined as Planicoxa depressa by Carpenter and Wilson (2008); it was misspelled as Planicoxa depressus by Carpenter and Ishida (2010) and Diedrich (2011); it was recombined as Osmakasaurus depressus by McDonald (2011), Zheng et al. (2013) and Verdú et al. (2015).

Synonymy list
YearName and author
1909Camptosaurus depressus Gilmore pp. 292-295 figs. 45-47
1925Camptosaurus depressus Gilmore p. 393
1934Camptosaurus depressus Stromer p. 63
1964Camptosaurus depressus Kuhn p. 9
1979Camptosaurus depressus Galton and Jensen p. 3
1980Camptosaurus depressus Galton and Powell p. 438
1981Camptosaurus depressus Bartholomai and Molnar p. 343
1983Camptosaurus depressus Weishampel and Weishampel p. 44
1989Camptosaurus depressus Weishampel and Bjork p. 64
1990Camptosaurus depressus Norman and Weishampel p. 530
1994Camptosaurus depressus Chure et al. p. 304
2004Camptosaurus depressus Norman p. 415
2006Camptosaurus depressus Mateus p. 231
2006Camptosaurus depressus Pereda Suberbiola et al. p. 228
2008Planicoxa depressa Carpenter and Wilson pp. 257-258
2010Planicoxa depressus Carpenter and Ishida p. 152
2011Camptosaurus depressus Diedrich p. 145
2011Osmakasaurus depressus McDonald pp. 61 - 64 fig. 8
2013Osmakasaurus depressus Zheng et al.
2015Osmakasaurus depressus Verdú et al. p. 256

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
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
genusOsmakasaurus
speciesdepressus()

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
A. T. McDonald 2011Basal styracosternan distinguished from all other iguanodontians by the following unique combination of characters: cranial end of preacetabular process of ilium modified into horizontal boot, straight dor- sal margin of ilium, dorsal margin of ilium thickens mediolaterally towards the M. iliocaudalis platform (Figs. 8A, B, E).