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Chirotherium swinnertoni

Reptilia - Chirotheriidae

Taxonomy
Otozoum swinnertoni was named by Sarjeant (1970). Its type specimen is PC4238, a footprint, and it is a trace fossil. Its type locality is Mapperley Park tracksite, which is in an Anisian terrestrial sandstone in the Keuper Waterstones Formation of the United Kingdom.

It was recombined as Chirotherium swinnertoni by D'Orazi Porchetti and Nicosia (2007).

Synonymy list
YearName and author
1970Otozoum swinnertoni Sarjeant p. 270 figs. 1, 2B; Pl. 20
1971Otozoum swinnertoni Haubold p. 85
1972Otozoum swinnertoni Demathieu and Haubold p. 806
2007Chirotherium swinnertoni D'Orazi Porchetti and Nicosia p. 238

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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
RankNameAuthor
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
Pseudosuchia(Zittel 1890)
familyChirotheriidaeAbel 1935
genusChirotheriumKaup 1835
speciesswinnertoni()

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
W. A. S. Sarjeant 1970Pes, considered to be of a bipedal reptile. Plantigrade, with the digits and front and hind parts of the sole deeply impressed, the central part of the sole not being impressed. Four digits (I-IV) are represented, the first being reduced. The fifth digit is not impressed (either non-functional or lacking). The digits are not markedly divergent; the phalangeal pads are poorly marked and the claws are not very acute.