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Parotosuchus speleus

Taxonomy
Parotosuchus speleus was named by Shishkin and Sulej (2009). Its type specimen is ZPAL AbIV/105, a partial skull (left vomer), and it is a 3D body fossil. Its type locality is Czatkowice 1 quarry, which is in an Olenekian fissure fill limestone/limestone in Poland.

Synonymy list
YearName and author
2009Parotosuchus speleus Shishkin and Sulej p. 34 figs. 1–6, 8C, 9–21, 22A, B, 23–31

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
Tetrapoda()
Temnospondyli()
Eutemnospondyli
Rhachitomi()
Eryopiformes
Stereospondylomorpha
Stereospondyli()
Capitosauria
Capitosauroidea()
genusParotosuchusOchev and Shishkin 1968
speciesspeleus

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
M. A. Shishkin and T. Sulej 2009A new species distinguished from all other members of Parotosuchus by a combination of the following character states: (1) adjacent portions of interchoanal and parachoanal palatal tooth rows are
nearly aligned instead of forming a right angle, (2) assuming the retention in P. speleus of the standard capitosauroid outline of the snout, the presence of character 1 implies anterior convexity of the interchoanal row, in contrast to straight transverse alignment or gentle concavity of this row in other species.