Porpoceras

{{Short description|Extinct genus of ammonites}}

{{Automatic taxobox

|fossil_range = {{fossil range|Toarcian}}M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.

| taxon = Porpoceras

| authority = Buckman, 1911

| type_species = Ammonites vortex

| type_species_authority = Simpson, 1855

| subdivision_ranks = Species

| subdivision =

• 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.Jattiot, R., Fara, E., Brayard, A., & Vennin, E. (2016). Revised stratigraphic range of the Toarcian ammonite genus Porpoceras Buckman, 1911. Geodiversitas, 38(4), 505-513. Their fossils were found in Europe, Asia, North America and South America.