Species: riabinini BOLOTSKY & KURZANOV, 1991
Etymology: In honor of Anatolii Nikolaevich Riabinin.
Holotype: AEHM 1/12
Locality: Upper part of Nagornaia Street, southern part of the city Blagoveshchensk, 50°16'07.63"N, 127°28'50.24"E, Amur Province, Asian Russia.
Horizon: Lower section of the Tsagayan Formation, (Tsagayanskaya Svita).
Biostratigraphy: Wodehouseia spinata--Aquilapollenites subtilis palynozone.
Age: Middle Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.
Referred material:
BERTOZO, BOLOTSKY, BOLOTSKY, POBEREZHSKIY, RUFFELL, GODEFROIT & MURPHY, 2022
AEHM 1/1037: A pathologic right ulna.