What is "batrachognathus"

Batrachognathus is an extinct genus of " rhamphorhynchoid" pterosaur from the Late Jurassic ( Oxfordian - Kimmeridgian) Karabastau Svita of the central Asian republic of Kazakhstan. The genus was named in 1948 by the Russian paleontologist Anatoly Nicolaevich Ryabinin. The type species is Batrachognathus volans. The genus name is derived from Greek batrakhos, "frog" and gnathos, "jaw", in reference to the short wide head. The specific epithet means "flying" in Latin.