Porpoceras

Porpoceras; Temporal range:
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Dactylioceratidae
Subfamily:	†Dactylioceratinae
Genus:	†Porpoceras; Buckman, 1911
Type species
	Ammonites vortex; Simpson, 1855
Species
	P. vortex (Simpson, 1855); P. verticosum (Simpson, 1855); P. vorticellum (Simpson, 1855); P. polare Frebold, 1929; P. spinatum Frebold, 1958; P. gigas Guex, 1973; P. planiventer Guex, 1972; P. pseudodesplacei Guex, 1972; P. crassicostatum Guex, 1972; P. beurleni Monestier, 1931; P. tenellissimum Monestier, 1931; P. acanthopsis (D'Orbigny, 1850);
Synonyms
	Telodactylites Pinna & Levi-Setti, 1971; Platystrophites Levi-Setti & Pinna, 1971;

Porpoceras is genus of ammonite that lived during the early and middle Toarcian stage of early Jurassic. Members of this genus existed from uppermost part of the Harpoceras serpentinum zone to the Haugia variabilis zone. Their fossils were found in Europe, Asia, North America and South America.