Genus: Deltavjatia LEBEOLOV, in IVAKHENKO, 1987
Etymology: In reference to the triangular shape of its skull, resembling the Greek letter “delta”, and the Vyatka River (tributary of the Kama and Volga), near where the specimen was found.

Species: rossicus (HARTMANN-WINBERG, 1933) TSUJI, 2013
= Anthodon rossicus HARTMANN-WINBERG, 1933
Etymology: Latin, rossicus, "Russia."
= Scutosaurus rossicus (HARTMANN-WINBERG, 1933)

Holotype: PIN 2212/2

Locality: Kotel’nich locality, approximately 20 km on the western bank of the Jjatka River south of the town of Kotel'nich, Kotel’nichskii District, Kirov Region, Eastern European Russia.

Horizon: Tatarian Series, Upper Severodvinian Substage, Severodvinian Horizon.

Biostratigraphy: Sokolki Faunal Assemblage, Kotelnich Faunal Subassemblage, Zone IV.

Age: Upper Capitanian to lowermost Wuchiapingian, Lowermost part of the Upper Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material:

Referred material:

PIN 2212/6: Complete skull and lower jaw.

PIN 2212/8: Complete skull.

PMU R1259: Complete skeleton missing most of tail.

ROM 44764: Complete skull and lower jaw.

SMNS 58317: Complete skull and lower jaw, incomplete postcranial including articulated presacral vertebrae, partial shoulder girdle including clavicle, humerus, and partial pelvic girdle.

RTMP 95.44.10: Complete skull and lower jaw, partially articulated and mostly complete postcranial, missing posterior caudals, right and left manus and some ribs.


= Pareiasuchus vjatkensis HARTMAN-WEINBERG, 1933
Etymology: In refernece to the Vjatka River, Kirov Region, Eastern European Russia.
= Pareiasaurus vjatkensis (HARTMAN-WEINBERG, 1933)
= Anthodon rossicus HARTMANN-WINBERG 1937
= Deltavjatia vjatkensis (HARTMANN-WEINBERG 1933) LEBEOLOV, in IVAKHENKO, 1987

Holotype: PIN 2212/1

Locality: Kotel’nich locality, approximately 20 km on the western bank of the Vjatka River south of the town of Kotel'nich, Kotel’nichskii District, Kirov Region, Eastern European Russia.

Horizon: Tatarian Series, Upper Severodvinian Substage, Severodvinian Horizon.

Biostratigraphy: Sokolki Faunal Assemblage, Kotelnich Faunal Subassemblage, Zone IV.

Age: Upper Capitanian to lowermost Wuchiapingian, Lowermost part of the Upper Tatarian Age, Lopingian Subepoch, upper Zechstein Epoch, Late Permian.

Material: Nearly complete skull.

Referred material:

LEE, 1997

UMZC T1321: Complete skull and lower jaw, vertebral column missing posterior sacrals and caudals, ribs, complete shoulder girdle and both forelimbs, partial eft hind lime and osteoderms.

KMR (unnumbered): A skull, lower jaw, vertebral column missing tail, and portions of both girdls, forelimbs and hind limbs.

There are at least 4 skulls of this animal, one in the Palaeontological Institute, Moscow, the labels have been mixed up, but the catalogue number is probably PIN 2212/3, another is in the private collection of Mr. Terry Manning, and 2 more are currently undergoing prepartion in the Deparment of Zoology, Erindale Collage, Univeristy of toronto (Modesto, 1994).

KORDIKOVA & KHYLUPIN, 2001

KPM/N11/99: A fragment of skull belonging to a neonate, vertebral column missing posterior dorsal and caudal vertebrae, patial shoulder girdle and ribs, Osteoderms.

TSUJI, 2013

KPM 232: Complete skull and lower jaw, complete postcranial missing posterior caudals and right hindlimb, as well as some phalanges from the right manus.

KPM 11/94: Some disarticulated skull elements including maxilla and quadratojugal, partially articulated dorsal vertebrae with osteoderms, disarticulated limb elements and interclavicle.

 

LEE, 1993

Locality: European Russia.

Horizon:

Biostratigraphy: Zone IV.

Age: Lower Tatarian Age, Capitanian Stage, Upper Guadelupian Stage, Middle Zechstein Epocn, Late Middle Permian.

Material:

Cambridge University Museum of Zoology T1321: Skull and nearly complete skeleton.

KORDIKOVA, 2000

Number: Not given: A small partial skull of eather a neonate or embronyic animal, a larger adult specimen was also found.

 

= Anthodon chlynoviensis EFREMOV, 1933

Holotype:

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