Chupkaornis (meaning "eastern bird") is a genus of prehistoric flightless birds from the Late Cretaceous (Coniacian-Santonian) Kashima Formation of Hokkaido, Japan. The type species is Chupkaornis keraorum.
Chupkaornis (meaning "eastern bird") is a genus of prehistoric flightless birds from the Late Cretaceous (Coniacian-Santonian) Kashima Formation of Hokkaido, Japan. The type species is Chupkaornis keraorum.
==Discovery and naming== It was discovered in August 1996 in the Late Cretaceous (Coniacian to Santonian) Kashima Formation of the Yezo Group in Mikasa, Hokkaido, and was donated to the Mikasa City Museum and later exhibited in its permanent collection. The fossils consist of nine bones: cervical vertebrae, torso vertebrae, femur, and fibula. It was discovered as a new genus and species by Hokkaido University and others in August 2017, and described by Tomonori Tanaka, Yoshitsugu Kobayashi, Ken'ichi Kurihara, Anthony R. Fiorillo, and Manabu Kano.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).