Datheosaurus
| Datheosaurus Temporal range: Late Carboniferous - Early Permian,  | |
|---|---|
| Skeleton | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Synapsida | 
| Clade: | †Caseasauria | 
| Family: | †Caseidae | 
| Genus: | †Datheosaurus Schroeder, 1905 | 
| Species: | †D. macrourus | 
| Binomial name | |
| †Datheosaurus macrourus Schroeder, 1905 | |
Datheosaurus ("Dathe's lizard") is an extinct genus of caseasaur. It was at least 1.5 metres (5 ft) in length. It lived during the Latest Carboniferous to Early Permian in Poland. It was named for Ernst Dathe (1845–1917), the German geologist who first announced the fossil find.