
Gonkoken (meaning "similar to a wild duck or swan") is an extinct genus of hadrosauroid ornithopod dinosaur from the Late Cretaceous Dorotea Formation of Chilean Patagonia. The genus contains a single species, Gonkoken nanoi, known from disarticulated bones of multiple individuals.
Gonkoken (meaning "similar to a wild duck or swan") is an extinct genus of hadrosauroid ornithopod dinosaur from the Late Cretaceous Dorotea Formation of Chilean Patagonia. The genus contains a single species, Gonkoken nanoi, known from disarticulated bones of multiple individuals.
== Discovery and naming == The Gonkoken fossil specimens were discovered beginning in 2013 in sediments of the Dorotea Formation in the Río de las Chinas Valley, Estancia Cerro Guido, in Magallanes Region, Chile. The holotype specimen, CPAP 3054, consists of a right ilium. Additional material assigned as paratype includes the disarticulated bones of at least three individuals. These bones include skull material, cervical, dorsal, and caudal vertebrae, ribs, partial pectoral and pelvic girdles, and arm and leg bones.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).