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Deltavjatia rossicus

Reptilia - Pareiasauridae

Taxonomy
Anthodon rossicus was named by Hartmann-Weinberg (1937). Its type specimen is PIN 2212/2, a skull (without lower jaw), and it is a 3D body fossil. Its type locality is Kotelnich, Vjatka River ("Sarmin" series), PIN 2212, which is in a Severodvinian terrestrial claystone/sandstone in the Urpalov Formation of the Russian Federation.

It was synonymized subjectively with Deltavjatia vjatkensis by Lee (1997) and Lee (2000); it was recombined as Deltavjatia rossicus by Tsuji (2013).

Synonyms
Synonymy list
YearName and author
1937Pareiasuchus vjatkensis Hartmann-Weinberg pp. 664, 707 figs. Pls. I-III
1937Anthodon rossicus Hartmann-Weinberg pp. 676, 708 figs. Pls. IV & V
1940Anthodon chlynoviensis Efremov p. 133
1940Anthodon rossicus Efremov p. 133
1997Deltavjatia vjatkensis Lee p. 254
2000Deltavjatia vjatkensis Lee p. 73 figs. 5.2, 5.3
2013Deltavjatia rossicus Tsuji

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassParareptilia
Procolophonomorpha()
Procolophonia()
Hallucicrania
superfamilyPareiasauroideaNopsca 1928
Pareiasauria()
familyPareiasauridaeLydekker 1889
genusDeltavjatiaLebedev 1987
speciesrossicus()

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. S. Y. Lee 2000 (Deltavjatia vjatkensis)Ventrolateral cheek flange terminates in a long, flattened, rectangular boss; occipital condyle projects far behind posterior border of postparietal; boss on postfrontal enlarged into a long conical horn.