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Stenotosaurus stantonensis

- Mastodonsauridae

Taxonomy
Capitosaurus stantonensis was named by Woodward (1904). Its type specimen is BMNH R3174, a skull, and it is a 3D body fossil. Its type locality is Stanton, near Uttoxeter, which is in a Triassic terrestrial sandstone in the United Kingdom.

It was recombined as Cyclotosaurus stantonensis by Zittel (1911) and Welles and Cosgriff (1965); it was recombined as Procyclotosaurus stantonensis by Watson (1958); it was recombined as Stenotosaurus stantonensis by Damiani (2001).

Synonymy list
YearName and author
1904Capitosaurus stantonensis Woodward
1911Cyclotosaurus stantonensis Zittel
1958Procyclotosaurus stantonensis Watson p. 257
1965Cyclotosaurus stantonensis Welles and Cosgriff p. 40
2001Stenotosaurus stantonensis Damiani p. 423

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
Tetrapoda()
Temnospondyli()
Eutemnospondyli
Rhachitomi()
Eryopiformes
Stereospondylomorpha
Stereospondyli()
Capitosauria
Capitosauroidea()
familyMastodonsauridaeLydekker 1885
genusStenotosaurusRomer 1947
speciesstantonensis()

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
D. M. S. Watson 1958"C. stantonensis differs very greatly in the persistence in it of the post-tympanic flange of the pterygoid found in "Capitiosarus" (=Parotosaurus) and in the proportions of the tympanic cavity so far as it can be inferred. It retains more of the structure and proportions of this region in Parotosaurus, and appears to be a "primitive" form, not necessarily closely related to other cyclotosaurs and I therefore establish for it a new genus, Procyclotosaurus."