thumb|left|Referred skull, the holotype of Rubidgea platyrhina thumb|left|Referred skull
thumb|left|Referred skull, the holotype of Rubidgea platyrhina thumb|left|Referred skull
Leontosaurus is an extinct genus of non-mammalian synapsids from the Dicynodon Assemblage Zone, Balfour Formation of South Africa. It contains the single species L. vanderhorsti.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).