Species: maximus KHOSATSKY & NESOV, 1979
Etymology: Latin, maximus, "greatest."

Holotype: PIN 2398/501

Locality: West Fergana, Karakalpakia, Kirghizia (Kyrgyzstan).

Horizon: Upper part of the Khodzhakul Svita.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch-Santonian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material:

Referred material:

KORDIKOVA, GUNNELL, POLLY & KOVRIZHNYKH, 1996

Locality: Baybishe, Kazakhstan.

Horizon: Bostobe Formation.

Biostratigraphy:

Age: Santonian, Middle Senonian Subepoch, Lower Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

Locality: Buroynak, Kazakhstan.

Horizon: Bostobe Formation.

Biostratigraphy:

Age: Santonian, Middle Senonian Subepoch, Lower Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

 

Locality: Shakh-Shakh, Kazakhstan.

Horizon: Bostobe Formation.

Biostratigraphy:

Age: Santonian, Middle Senonian Subepoch, Lower Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

NESOV, 1986

Locality: Dzharakhuduk (= Bissekty), Uzbekistan

Horizon:

Biostratigraphy:

Age: Coniacian Stage, Lower Senonian Subepoch, Gulf Epoch, Early Cretaceous.

Material:

Number: Not given: Braincase and fragmentary shell and plastron.

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Species: oxensis NESOV & KHOSATSKY, 1979
Etymology:

Holotype: ZIN RNT S 74-1

Locality: West Fergana, Karakalpakia, Kirghizia (Kyrgyzstan).

Horizon: Upper part of the Khodzhakul Svita.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch-Santonian Stage Lower Senonian Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material: