Species: kansuensis (BOHLIN, 1953)
Etymology: In reference to Kansus, (Gansu) Province, China.
= Osteopygis kansuensis BOHLIN, 1953
Holotype:
Locality: Ta-ts ao-t'an, Chia-yu-Kuan Badlands, Gansu Province, China.
Horizon:
Biostratigraphy:
Age: Late Cretaceous.
Material: Fragmentary perepherals.
Referred material:
Fragmentary peripherals, costals, vertebral plate plastron of several individuals.
BAKHURINA & UNWIN, 1995
JSMPE (MMNH)
Locality: 60 km south west of Choir, in the Middle Gobi Aimag Hüren Dukh (Khuren Dukh), Dundgov Aimak (Middle Gobi), Southeastern Mongolia
Horizon: Dzun-Bayin Formation, Huhteeg Gorizont, Zuubayan Svita.
Biostratigraphy:
Age: Aptian/Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Note: Large lake deposit.Material:
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Species: hoburensis SUKHANOV & NARMANDAKH, 1974
Etymology: In reference to the Hobur locality, Mongolia.
Holotype: 3334-1
Locality: Habur locality, Mongolia.
Horizon:
Biostratigraphy:
Age: Early Cretaceous.
Material: Fragmentary shell and fragmentary plastron.
Referred material:
3334-4: Skull.
3334-5: Fragmentary shell.
3334-7:
3334-8-15:
3334-16: Fragmentary shell.
3334-17-3334-158: