Species: longicaudus CAI & ZHAO, 1999
Etymology: Latin, longi, "long" and Latin, caudatus, "tail": Longicaudus reflects the main feature of the fossil.
Holotype: ZMNH M1326
Locality: Aoli Village, Shangpan Town, Linhai City, Zhejiang Province, China.
Horizon: Tangshan Group.
Age: Campanian Stage? Senonian Subepoch, Gulf Epoch, Early Late Cretaceous.
Material: Nearly complete specimen missing the wrists and digits I and II.