PBDB Taxon

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Otozoum

Reptilia - Otozoidae

Taxonomy

Otozoum was named by Hitchcock (1847). It is the type genus of Otozoidae.

It was assigned to Batrachia by Hitchcock (1848) and Owen (1861); to Pachydactyli by Quenstedt (1882); to Batrachia by Hitchcock (1898); to Orthopoda by Lull (1917); to Gigandipodidae by Sarjeant (1970); to Saurischia by Kuhn (1971); to Prosauropoda by Haubold (1974); to Prosauropoda by Lull (1953), Rainforth (2000) and Lockley et al. (2002); to Sauropodomorpha by Irmis (2005); to Prosauropoda by Avanzini et al. (2003), Nicosia and Loi (2003), Lucas et al. (2006) and Weishampel (2006); and to Otozoidae by Lull (1904), Lull (1915), Kuhn (1958), Kuhn (1963), Haubold (1969), Haubold (1971), Demathieu and Haubold (1972) and Lockley et al. (2006).

Species

O. caudatum, O. grandcombensis, O. minus, O. moodii

Synonymy list

Year	Name and author
1847	Otozoum Hitchcock p. 54
1848	Otozoum Hitchcock p. 214
1861	Otozoum Owen p. 190
1882	Otozoum Quenstedt p. 131
1898	Otozoum Hitchcock p. 402
1904	Otozoum Lull p. 513
1915	Otozoum Lull p. 222
1917	Otozoum Lull p. 119
1953	Otozoum Lull pp. 187-188
1958	Otozoum Kuhn p. 23
1963	Otozoum Kuhn p. 85
1969	Otozoum Haubold p. 101
1970	Otozoum Sarjeant p. 270
1971	Otozoum Haubold p. 85
1971	Otozoum Kuhn p. 23
1972	Otozoum Demathieu and Haubold p. 806
1974	Otozoum Haubold p. 46
2000	Otozoum Rainforth p. 67
2002	Otozoum Lockley et al. p. 378
2003	Otozoum Avanzini et al. p. 190
2003	Otozoum Nicosia and Loi p. 138
2005	Otozoum Irmis p. 64
2006	Otozoum Lockley et al. p. 205
2006	Otozoum Lucas et al. p. 114
2006	Otozoum Weishampel p. 140

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida

Rank	Name	Author
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Saurischia	()
—	Eusaurischia
—	Sauropodomorpha	(Huene 1932)
—	Bagualosauria
—	Plateosauria	()
—	Anchisauria
—	Prosauropoda	()
family	Otozoidae
genus	Otozoum

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.

G. †Otozoum Hitchcock 1847

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†Otozoum caudatum Hitchcock 1871

†Otozoum grandcombensis Gand et al. 2000

†Otozoum minus Lull 1915

†Otozoum moodii Hitchcock 1847

Diagnosis

Reference	Diagnosis
E. Hitchcock 1848	Toes four, directed forward, or obliquely forward. Bipedal.
W. A. S. Sarjeant 1970	Bipedal. Manus rarely present in the trackway. Pes plantigrade, functionally tetradactyl, hallux non-rotated. Digits broad, with well marked phalangeal pads; claws more or less rounded. Manus apparently pentadactyl, relatively small. Occasional tail trace.
M. G. Lockley et al. 2006	Pes pentadactyl with four anteriorly-directed digit impressions; digit III slightly longer than subequal digits II and IV, which are longer than digit I; digit V impression interpreted as a subrounded pad posterior to the coalesced metatarsophalangeal pads of digits III and IV; digits II-IV subparallel, laterally convex, and blunt, anteriorly or medially directed claw impressions; digit I impression less curved and slightly divergent medially with rspect to digit II; ichnophalangeal formula (including claw marks) 2-3-4-5-1; manus pentadactyl, much smaller than pes, outwardly rotated, with short digit impressions; digit I impression slightly longer and more prominent than digit II-IV impressions.