Ivantosaurus
| Ivantosaurus Temporal range: Wordian, | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subclass: | Synapsida |
| Order: | Therapsida |
| Suborder: | |
| Family: | |
| Genus: | †Ivantosaurus Tchudinov, 1983 |
| Type species | |
| †Ivantosaurus ensifer Tchudinov, 1983 | |
Ivantosaurus is an extinct genus of therapsid that lived in Russia during the Wordian stage of the Permian period, named in honor of paleontologist Ivan Antonovich Efremov.
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