Plutoniosaurus is an extinct genus of ophthalmosaurid ichthyosaur of uncertain validity from the Early Cretaceous (late Hauterivian) of the vicinity of Ulyanovsk, European Russia.
Plutoniosaurus is an extinct genus of ophthalmosaurid ichthyosaur of uncertain validity from the Early Cretaceous (late Hauterivian) of the vicinity of Ulyanovsk, European Russia.
==Taxonomy== Plutoniosaurus was named by Vladimir Efimov in 1997 based on the holotype specimen UPM 2/740, a partial skeleton containing the skull, the shoulder girdle, forelimbs and vertebrae. The generic name is derived from the Ulyanovsk Regional Young Paleontologists Club that was nicknamed Plutonia. The specific name refers to the village of Novaya Beden'ga, the site of discovery on the right bank of the Volga.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).