PBDB Taxon

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Cyclotosaurus

Amphibia - Temnospondyli - Cyclotosauridae

Taxonomy

Cyclotosaurus was named by Fraas (1889).

It was assigned to Capitosauridae by Watson (1919), Haughton (1925), Welles and Cosgriff (1965), Kuhn (1971), Paton (1976), Ingavat and Janvier (1981) and Carroll (1988); to Cyclotosaurinae by Schoch and Milner (2000); to Mastodonsauridae by Damiani (2001); to Capitosauroidea by Schoch (2013); and to Cyclotosauridae by Marzola et al. (2017).

Species

Capitosaurus, C. buechneri, C. ebrachensis, C. hemprichi, C. intermedius, C. leptognathus, C. naraserluki, C. papilio, C. posthumus (syn. C. mordax), C. robustus (syn. Mastodonsaurus cyclotis, Mastodonsaurus robustus), Hercynosaurus, Hercynosaurus carinidens

Sister genera

Capitosaurus, Hercynosaurus

Synonyms

Labyrinthodon leptognathus was named by Owen (1841). It is a 3D body fossil. Its type locality is Coten End Quarry, which is in an Anisian channel sandstone/marl in the Bromsgrove Sandstone Formation of the United Kingdom.

It was recombined as Cyclotosaurus leptognathus by Ingavat and Janvier (1981); it was considered a nomen vanum by Welles and Cosgriff (1965); it was considered a nomen dubium by Damiani (2001).
Hercynosaurus was named by Jaekel (1914).

It was considered a nomen vanum by Welles and Cosgriff (1965) and Kuhn (1971); it was considered a nomen dubium by Damiani (2001).

It was assigned to Hemispondyla by Jaekel (1914).
Hercynosaurus carinidens was named by Jaekel (1914). It is a 3D body fossil. Its type locality is Baerecke-Limpricht clay pit, Halberstadt (bed 16), which is in a Rhaetian floodplain sandstone in the Trossingen Formation of Germany.

It was considered a nomen vanum by Welles and Cosgriff (1965) and Kuhn (1971); it was considered a nomen dubium by Damiani (2001).
Capitosaurus was named by Münster (1836). It is the type genus of Capitosauroidea, Capitosauridae.

It was reranked as Labyrinthodon (Capitosaurus) by Owen (1859); it was considered a nomen vanum by Welles and Cosgriff (1965); it was considered a nomen vanum by Paton (1976); it was considered a nomen dubium by Schoch and Milner (2000).

It was assigned to Labyrinthodontes by Meyer (1845); to Labyrinthodontidae by d'Orbigny (1849); to Labyrinthodon by Owen (1859); and to Capitosauridae by Watson (1919), Haughton (1925) and Kuhn (1971).

Synonymy list

Year	Name and author
1836	Capitosaurus Münster
1841	Labyrinthodon leptognathus Owen
1842	Labyrinthodon leptognathus Owen p. 183
1845	Capitosaurus Meyer p. 282
1849	Capitosaurus d'Orbigny p. 213
1854	Labyrinthodon leptognathus Mantell p. 753
1859	Labyrinthodon leptognathus Owen p. 137
1859	Labyrinthodon (Capitosaurus) Owen p. 139
1861	Labyrinthodon leptognathus Owen p. 212
1889	Cyclotosaurus Fraas
1914	Hercynosaurus Jaekel p. 213
1914	Hercynosaurus carinidens Jaekel p. 213
1919	Capitosaurus Watson p. 67
1919	Cyclotosaurus Watson p. 67
1925	Capitosaurus Haughton p. 238
1925	Cyclotosaurus Haughton p. 248
1965	Cyclotosaurus Welles and Cosgriff p. 35
1971	Capitosaurus Kuhn p. 6
1971	Cyclotosaurus Kuhn p. 7
1976	Cyclotosaurus Paton p. 415
1981	Cyclotosaurus Ingavat and Janvier p. 718 fig. 6
1981	Cyclotosaurus leptognathus Ingavat and Janvier p. 718 fig. 6
1988	Cyclotosaurus Carroll
2000	Cyclotosaurus Schoch and Milner
2001	Cyclotosaurus Damiani p. 400
2013	Cyclotosaurus Schoch
2017	Cyclotosaurus Marzola et al.

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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

Rank	Name	Author
class	Amphibia
order	Temnospondyli	()
—	Eutemnospondyli
—	Rhachitomi	()
—	Eryopiformes
—	Stereospondylomorpha
—	Stereospondyli	()
—	Superstes
—	Capitosauria
—	Capitosauroidea	()
family	Cyclotosauridae	Shishkin 1964
genus	Cyclotosaurus	Fraas 1889

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. †Cyclotosaurus Fraas 1889

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†Cyclotosaurus buechneri Witzmann et al. 2016

†Cyclotosaurus ebrachensis Kuhn 1932

†Cyclotosaurus hemprichi Kuhn 1942

†Cyclotosaurus intermedius Sulej and Majer 2005

†Cyclotosaurus naraserluki Marzola et al. 2017

†Cyclotosaurus papilio Wepfer 1913

†Cyclotosaurus posthumus Fraas 1913

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Invalid names: Cyclotosaurus mordax Fraas 1913 [synonym]

†Cyclotosaurus robustus Meyer and Plieninger 1844

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Invalid names: Mastodonsaurus cyclotis Quenstadt 1850 [objective synonym], Mastodonsaurus robustus Quenstadt 1850 [synonym]

Invalid names: Capitosaurus Münster 1836 [nomen dubium], Cyclotosaurus leptognathus Owen 1841 [nomen dubium], Hercynosaurus Jaekel 1914 [nomen dubium], Hercynosaurus carinidens Jaekel 1914 [nomen dubium]

Diagnosis

No diagnoses are available