
Anurognathus (from the Greek ανоυρα γναθος "frog jaw") is an extinct genus of small pterosaur from the Late Jurassic Altmühltal Formation of Germany. Anurognathus was first named and described by Ludwig Döderlein in 1923. The type species is Anurognathus ammoni. The specific name ammoni honours the Bavarian geologist Ludwig von Ammon, from whose collection Döderlein had acquired the fossil in 1922.
Anurognathus (from the Greek ανоυρα γναθος "frog jaw") is an extinct genus of small pterosaur from the Late Jurassic Altmühltal Formation of Germany. Anurognathus was first named and described by Ludwig Döderlein in 1923. The type species is Anurognathus ammoni. The specific name ammoni honours the Bavarian geologist Ludwig von Ammon, from whose collection Döderlein had acquired the fossil in 1922.
==Discovery== The genus is based on holotype BSP 1922.I.42 (Bayerische Staatssammlung für Palaeontologie und Geologie), found in the Solnhofen limestone near Eichstätt no later than 1922. It consists of a crushed, relatively complete skeleton on a slab. The counterslab is missing and with it most of the bones: much of the skeleton is only visible as an impression.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).