Grendelius is a genus of platypterygiine ophthalmosaurid ichthyosaur from the Late Jurassic (Kimmeridgian-Tithonian) of the UK and European Russia. It was a medium-sized ichthyosaur measuring about long.
Grendelius is a genus of platypterygiine ophthalmosaurid ichthyosaur from the Late Jurassic (Kimmeridgian-Tithonian) of the UK and European Russia. It was a medium-sized ichthyosaur measuring about long.
==Taxonomy== thumb|left|Size comparison of G. alekseevi The type species, Grendelius mordax, was described in 1976 on the basis of CAMSM J.68516, a complete skull with associated postcranial elements from the Kimmeridge Clay of England. Later, it was reassigned to Brachypterygius because differences between the two species were considered insufficient to warrant separate genera, or even species.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).