Petalodus

Petalodus; Temporal range:
	P. ohioensis tooth
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Petalodontiformes
Family:	†Petalodontidae
Genus:	†Petalodus; Owen, 1840
Type species
	†Petalodus hastingsii; Owen, 1840
Other species
	†P. acuminatus Agassiz, 1838; †P. allegheniensis Leidy, 1856; †P. arcuatus St. John, 1870; †P. davisii Woodward, 1889; †P. destructor Newberry & Worthen, 1870; †P. flabulella Woodward, 1889; †P. grandis Davis, 1883; †P. jewetti Miller, 1957; †P. luminaries Agassiz, 1838; †P. ohioensis Safford, 1851; †P. sagittatus Agassiz, 1843; †P. securiger? Hay, 1895;
Synonyms
	Getalodus Safford, 1853; Sicarius Leidy, 1856;

Petalodus is an extinct genus of cartilaginous fish from the Pennsylvanian to the Permian, known from subtriangular to rhomboidal teeth. The genus was named by Richard Owen in 1840 and the type species is Petalodus hastingsii. The only dubious species within this genus is P. securiger.

Petalodus Temporal range:

P. ohioensis tooth
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Petalodontiformes
Family:	†Petalodontidae
Genus:	†Petalodus Owen, 1840
Type species
†Petalodus hastingsii Owen, 1840
Other species
†P. acuminatus Agassiz, 1838 †P. allegheniensis Leidy, 1856 †P. arcuatus St. John, 1870 †P. davisii Woodward, 1889 †P. destructor Newberry & Worthen, 1870 †P. flabulella Woodward, 1889 †P. grandis Davis, 1883 †P. jewetti Miller, 1957 †P. luminaries Agassiz, 1838 †P. ohioensis Safford, 1851 †P. sagittatus Agassiz, 1843 †P. securiger? Hay, 1895
Synonyms
Getalodus Safford, 1853 Sicarius Leidy, 1856