Jianchangnathus is an extinct genus of basal pterosaur from the Middle Jurassic Tiaojishan Formation of northeastern China.
Jianchangnathus is an extinct genus of basal pterosaur from the Middle Jurassic Tiaojishan Formation of northeastern China.
==Naming== Jianchangnathus was first described and named by Cheng Xin, Wang Xiaolin, Jiang Shunxing and Alexander W.A. Kellner in 2012 and the type species is Jianchangnathus robustus. The generic name combines a reference to Jianchang County with a Greek γνάθος, gnathos, "jaw". The specific name means "robust" in Latin.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).