Paracestracion is an extinct genus of heterodontiform sharks from Early Jurassic to Early Cretaceous-aged rocks of England, France, Germany and Luxembourg. The genus was first described in 1911 by Ernst Hermann Friedrich von Koken in Karl Alfred von Zittel.
Paracestracion is an extinct genus of heterodontiform sharks from Early Jurassic to Early Cretaceous-aged rocks of England, France, Germany and Luxembourg. The genus was first described in 1911 by Ernst Hermann Friedrich von Koken in Karl Alfred von Zittel.
The genus contains several Late Jurassic species known from well preserved full body remains, which show that it differs from the living bullhead sharks in the placement of the pelvic girdle and fins, as well as by having a shorter skull.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).