PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

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), Lee (2000); it was recombined as Deltavjatia rossicus by Tsuji (2013).

Synonyms

Pareiasuchus vjatkensis was named by Hartmann-Weinberg (1937). Its type specimen is PIN 2212/1, a skull (including 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 recombined as Deltavjatia vjatkensis by Lee (1997), Lee (2000); it was synonymized subjectively with Deltavjatia rossicus by Tsuji (2013).
Anthodon chlynoviensis was named by Efremov (1940) [No designated holotype, and location of the original described material is unknown]. 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 (2000).

Synonymy list

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

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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

Rank	Name	Author
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
subclass	Parareptilia	Lawrence 1868
—	Procolophonomorpha	()
—	Procolophonia	()
—	Hallucicrania
superfamily	Pareiasauroidea	Nopsca 1928
—	Pareiasauria	()
family	Pareiasauridae	Lydekker 1889
genus	Deltavjatia	Lebedev 1987
species	rossicus	()

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.

†Deltavjatia rossicus Hartmann-Weinberg 1937

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Invalid names: Pareiasuchus vjatkensis Hartmann-Weinberg 1937 [synonym]

Diagnosis

Reference	Diagnosis
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.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialuc

Locomotion:

actively mobilec

Diet:

herbivoresubo

Created:

2009-01-03 20:32:59

Modified:

2009-01-03 22:32:59

Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade

References: Benton 1983, Carroll 1988, Hendy et al. 2009

Age range: Early/Lower Severodvinian or 264.28000 to 259.51000 Ma

Collections: one only

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Severodvinian	264.28 - 259.51	Russian Federation (Kirov)	Anthodon rossicus, Pareiasuchus vjatkensis, Anthodon chlynoviensis (type locality: 28854)