Platypterygiinae

Platypterygiinae is an extinct subfamily of ophthalmosaurid thunnosaur ichthyosaurs from the early Late Jurassic to the early Late Cretaceous (Kimmeridgian - Cenomanian) of Asia, Australia, Europe, North America and South America. Currently, the oldest known platypterygiine is Brachypterygius. Platypterygiines were characterized by square tooth roots in cross-section, an extremely reduced extracondylar area of the basioccipital, prominent dorsal and ventral trochanters on humerus and ischiopubis lacking an obturator foramen.[2]

Platypterygiines Temporal range: Kimmeridgian-Cenomanian,
Caypullisaurus bonapartei
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Ichthyosauria
Family:	†Ophthalmosauridae
Subfamily:	†Platypterygiinae Arkhangelsky, 2001
Genera
†Acuetzpalin †Aegirosaurus †Athabascasaurus †Brachypterygius †Caypullisaurus †Grendelius[1] †Kyhytysuka †Maiaspondylus †Parrassaurus †Pervushovisaurus †Platypterygius †Simbirskiasaurus †Sisteronia †Sumpalla †Sveltonectes