Datheosaurus is an extinct genus of caseasaur. It was at least 1.5 metres (5 ft) in length. It lived from Latest Carboniferous to Early Permian.

Temporal range: Late Carboniferous - Early Permian, 299–296.4 Ma
Datheosaurus 2.jpg
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Caseasauria
Family: Caseidae
Genus: Datheosaurus
Schroeder, 1904
  • D. macrourus Schroeder, 1904 (type)

Discovery and historyEdit


It was originally described in 1904 on a basis of a specimen from late Carboniferous deposits in Poland. It was later considered a synonym of Haptodus by several authors, but subsequent examination has found it be a caseid rather a sphenacodont.[1] This was confirmed by cladistic analysis, which recovered Datheosaurus as a basal caseid [2]


  1. ^ Frederik Spindler; Jocelyn Falconnet & Jörg Fröbisch (2015). "Callibrachion and Datheosaurus, two historical and previously mistaken basal caseasaurian synapsids from Europe". Acta Palaeontologica Polonica. 61. doi:10.4202/app.00221.2015.
  2. ^ Neil Brocklehurst; Robert Reisz; Vincent Fernandez & Jörg Fröbisch (2016). "A Re-Description of 'Mycterosaurus' smithae, an Early Permian Eothyridid, and Its Impact on the Phylogeny of Pelycosaurian-Grade Synapsids". PLoS ONE. 11: e0156810. doi:10.1371/journal.pone.0156810. PMC 4917111. PMID 27333277.