Genus: Amtosaurus KURZANOV & TUMANOV, 1978
Etymology: In reference to the Amtgay site in Mongolia were the specimen was found and Greek, sauros, “lizard”: “Amtgay lizard”.

Species: magnus KURZANOV & TUMANOV, 1978
Etymology: Latin, magnus, "great, large, important, mighty."

Holotype: PIN 3780/2

Locality: Amtgai, Ömnögov, Gobi Desert, Mongolia.

Horizon: Bain Shiren Formation.

Biostratigraphy:

Age: Cenomanian Stage, Uppermiddle Gallic Subepoch-Lower Santonian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Part of brain case.


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