Cretornis is a pterosaur genus from the late Cretaceous period (Turonian stage) of what is now the Jizera Formation in the Czech Republic, dating to about 92 million years ago. It only contains a single species, Cretornis hlavaci.
Cretornis is a pterosaur genus from the late Cretaceous period (Turonian stage) of what is now the Jizera Formation in the Czech Republic, dating to about 92 million years ago. It only contains a single species, Cretornis hlavaci.
==Discovery and naming== thumb|left|Former sandstone quarry, location of discovery of C. hlavaci in 1880. The fossils were discovered in 1880 by workers at a sandstone quarry in Zářecká Lhota near the town of Choceň, who were getting gravel to repair a local road. A certain Mrs. Tomková, a croupier from Choceň, then alerted František Hlaváč, a Choceň pharmacist and fossil collector, to the find. He recognised exceptionality of that one, secured the rest of the fossils and then sent them to naturalist Professor Antonín Frič in Prague. In 1881, Frič identified it as a prehistoric toothed bird the size of a recent swan and named it as the type species Cretornis Hlaváči. The generic name is derived from Latin creta, "chalk", in reference to the Cretaceous, and Greek ὄρνις, ornis, "bird", as Frič originally thought that the fossil bones belonged to some kind of ancient toothed bird (similar to the genus Ichthyornis). The specific name honors Hlaváč.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).