Diplocaulus

Diplocaulus; Temporal range: Pennsylvanian to Lopingian (Kasimovian to Wuchiapingian), 306–255 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Reconstructed skeleton and life restoration model of Diplocaulus at the Denver Museum of Nature and Science
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Clade:	Tetrapodomorpha
Order:	†Nectridea
Family:	†Diplocaulidae
Genus:	†Diplocaulus; Cope, 1877
Species
	†D. salamandroides Cope, 1877(type); †D. magnicornis Cope, 1882; †D. brevirostris Olson, 1951; †D. recurvatus? Olson, 1952; †D. minimus? Dutuit, 1988;
Synonyms
	Genus-level: Permoplatyops Case, 1946; Species-level: Diplocaulus limbatus Cope, 1895; Diplocaulus copei Broili, 1904; Diplocaulus pusillus? Broili, 1904; Permoplatyops parvus (Williston, 1918 [originally Platyops parvus]); Diplocaulus primigenius Mehl, 1921; Diplocaulus parvus Olson, 1972;

Diplocaulus (meaning "double stalk") is an extinct genus of lepospondyl amphibians which lived from the Late Carboniferous to the Late Permian of North America and Africa. Diplocaulus is by far the largest and best-known of the lepospondyls, characterized by a distinctive boomerang-shaped skull. Remains attributed to Diplocaulus have been found from the Late Permian of Morocco and represent the youngest-known occurrence of a lepospondyl.