Mixosaurus
| Mixosaurus | |
|---|---|
| Dorsal view of fossil showing top of skull | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | †Ichthyosauria |
| Family: | †Mixosauridae |
| Subfamily: | †Mixosaurinae |
| Genus: | †Mixosaurus Baur, 1887 |
| Type species | |
| Mixosaurus cornalianus (Bassani, 1886) | |
| Species | |
| |
Mixosaurus is an extinct genus of Middle Triassic (Anisian to Ladinian, about 250-240 Mya) ichthyosaur. Its fossils have been found near the Italy–Switzerland border and in South China.
The genus was named in 1887 by George H. Baur. The name means "Mixed Lizard", and was chosen because it appears to have been a transitional form between the eel-shaped ichthyosaurs such as Cymbospondylus and the later dolphin-shaped ichthyosaurs, such as Ichthyosaurus. Baur named Mixosaurus as a new genus because its forefin was sufficiently different from that of Ichthyosaurus.
Numerous species have been described within this genus, which was once considered as the most common genus of Triassic ichthyosaurs. The type species is M. cornalianus, and the definitive number of species is debated among researchers.