Megapterygius
| Megapterygius Temporal range: Late Cretaceous (Maastrichtian), | |
|---|---|
| Type specimen of Megapterygius in the special exhibition at the National Museum of Nature and Science | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Clade: | †Mosasauria |
| Family: | †Mosasauridae |
| Subfamily: | †Mosasaurinae |
| Genus: | †Megapterygius Konishi et al., 2023 |
| Type species | |
| †Megapterygius wakayamaensis Konishi et al., 2023 | |
Megapterygius (meaning "large wing") is an extinct genus of mosasaurine mosasaur from the Late Cretaceous Toyajo Formation (Hasegawa Muddy Sandstone Member) of Japan. The genus contains a single species, M. wakayamaensis, known from an almost complete skeleton.