Species: lens WIMAN, 1930
Etymology:

Locality: Ningjiagou Valley, Mengyin County, Shandong (Shantung) Province, China.

Horizon: Mengyin Formation.

Biostratigraphy:

Age: Late Jurassic.

Material:

Syntypes:

PMU.R 1500, 1501, 1502, 1503, 1504, 1505, 1506: Partly complete shells.

Referred material:

BRINKMAN & PENG, 1993

Localities: Huan Xian Locality, China and Laolonghuoze, Ordos Basin, Gansu Province, Inner Mongolia, People’s Republic of China.

Horizon: Hekou Group, and Luohandong Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

IVPP V9533-1: A skeleton of a small individual, missing the neck, end of the tail and forelimbs.

IVPP V9533-2: An isolated incomplete carapace of a large individual, plastron largely complete except for anterior lobe, carapace largely represented by impression.

IVPP V9533-3: A skeleton of a small individual missing the limbs, and tail, posterior end of carapace represented by impression, seen in dorsal view.

IVPP V9533-4: A partial carapace and plasteron of a large individual, missing the anterior and posterior ends of the carapace and the left half of the plastron.

IVPP V9533-5: A partial carapace of a large individual, missing the posterior end and right lateral edge, plasteron partially preserved.

IVPP V8755: A carapace of a small individual in dorsal view, missing its anterior edge and with the posterior portion of the carapace represented by impression of the inner surface.

_____________________________________________________________________________________

Species: gamera BRINKMAN & PENG, 1993
Etymology: Named after Gamera, a fictional Japanese flying turtle, in reference to the winglike spines developed on the lateral margins of the shell.

Holotype: IVPP V9532-1

Locality: Laolonghuoe, 53 km west of Hanggin Qi, Inner Mongolia, People’s Republic of China.

Horizon: Luonhandong Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material: The posterior right three quarters of a shell including the fifth to eighth costal, the sixth to eleventh peripheral bones and the hyoplastron.

Referred material:

IVPP V9532-2: Sixth to ninth neurals and seventh costal in articulation.

IVPP V9532-3: Third and fourth neurals and fourth costal in articulation.

IVPP V9532-4: Three isolated seventh peripheral bones.

IVPP V9532-5: 2 isolated seventh peripheral bones.

IVPP V9532-6: 18 isolated seventh peripheral bones.

IVPP V9532-7: Isolated first costal.

IVPP V9532-8: Isolated eighth costal.

IVPP V9532-9: Isolated, nearly complete hypoplastron.

IVPP V9532-10: 3 isolated sixth peripherals.

IVPP V9532-11: Isolated skull.

IVPP V9532-12: Hyoplasteron.

_____________________________________________________________________________________

Species: chabuensis JI & CHEN, 2018
Etymology:

Locality: Otog Qi, Ordos Basin, Inner Mongolia, China.

Horizon: Jingchuan Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material: Nearly complete carapace.