What is "grippia"

Grippia is a genus of ichthyosaur, an extinct group of reptiles that resembled dolphins. These ichthyosaurs were small; at 1–1.5 m (3.3–4.9 ft) in length. Fossil remains from Svalbard from the specimen SVT 203 were originally assigned to Grippia longirostris but are now thought to have belonged to a non- ichthyopterygian diapsid related to Helveticosaurus.