Genus: Contritosaurus IVAKHENKO, 1974
Etymology: Latin, contritus, “well-used, long-known” and Greek, sauros, “lizard”: Long-known lizard.

Species: simus IVAKHENKO, 1974
Etymology: Greek, simos, "flat nose."

Holotype: PIN 3355/1

Locality: Lipovo village, Gor'kiy oblast, Nizhnii Novgorod Province, European Russia.

Horizon:

Biostratigraphy:

Age: Base of the Vetluga series, Vokmian Gorizont, Early Triassic.

Material: Nearly complete skull and lower jaw.

Referred material:

Locality: Kas'yanovtsy suite in Kirov oblast, European Russia.

Horizon:

Biostratigraphy:

Age: Vetluga series, Early Triassic.

Material:

PIN 2890/5: Incomplete skull.

 


Locality: Sarafanikha site in Gor'kiy oblast, Nizhnii Novgorod Province, European Russia.

Horizon: V

Biostratigraphy:

Age: Vetluga series, Early Triassic.

Material:

PIN 3356/1: Skull and fragmentary skeleton.


And separate skull bones from a number of other sites.

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Species: convector IVAKHNEKO, 1979
Etymology:

Holotype: PIN 3357/1

Locality: Krasnyye Baki village, Gor'kiy oblast, Nizhnii Novgorod Province, European Russia.

Horizon:

Biostratigraphy:

Age: Base of Vetluga series, Early Triassic.

Material: Fragmentary lower jaw and fragment of premaxilla and maxilla.

Referred material:

Locality: From the site near Krasnyye Baki Village, European Russia.

Horizon:

Biostratigraphy:

Age: Vetluga series, Early Triassic.

Material:

PIN 3357/2: Part of an upper jaw.