Tongnanlong (meaning "Tongnan District dragon") is a genus of mamenchisaurid dinosaur from the Late Jurassic Suining Formation of Chongqing, China. The type species is Tongnanlong zhimingi.
Tongnanlong (meaning "Tongnan District dragon") is a genus of mamenchisaurid dinosaur from the Late Jurassic Suining Formation of Chongqing, China. The type species is Tongnanlong zhimingi.
== Discovery and naming == The Tongnanlong holotype specimen, TNM 0254, consists of three dorsal and six caudal vertebrae, left shoulder girdle (scapula and coracoid) and hindlimb elements (partial tibia, fibula, three metatarsals, and two unguals). It was discovered in 1998 during construction of a building along Dafo Street.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).