Perotrochus

Perotrochus
Apertural view of Perotrochus atlanticus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Pleurotomariida
Superfamily: Pleurotomarioidea
Family: Pleurotomariidae
Genus: Perotrochus
Fischer, 1885[1]
Type species
Perotrochus quoyana Fischer & Bernardi, 1856
Synonyms

Pleurotomaria (Perotrochus) Fischer 1885

Perotrochus is a genus of large sea snails with gills and an operculum, marine gastropod mollusks in the family Pleurotomariidae, the slit snails, (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Description

The shell has a conical shape. The base is not umbilicated. The whorls are striate or granulate. The anal fasciole is submedian or below the middle. The slit is short.[2]

Species

Extant

According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Perotrochus:[3]

Species brought into synonymy

Fossil

  • P. allani , Red Bluff Tuff, New Zealand
  • P. brachoi , Otekaike Limestone, New Zealand
  • P. eocenicus , Kattachi Formation, Japan
  • P. isseli Roverato 1900, Sassello (SV), Tertiary Piedmont Basin, Italy
  • P. masoni Maxwell 1978, Otekaike Limestone, New Zealand (synonym of † Bayerotrochus masoni (P. A. Maxwell, 1978))
  • P. sismondai , Alzey Formation, Germany
  • P. (Perotrochus) hanoverensis, Castle Hayne Formation, North Carolina
  • P. (Entemnotrochus), Capay Formation, California and Swan Cay Formation, Panama
  • Pleurotomaria (Entemnotrochus) baldwini, P. (E.) schencki & P. (E.) siletzensis, Siletz River Volcanics, Oregon[4]

References

  1. ^ Fischer (1885). Man. Conch.: 850
  2. ^ G.W. Tryon (1890), Manual of Conchology vol. XII
  3. ^ WoRMS : Perotrochus; accessed : 9 September 2010
  4. ^ Hickman, 1976

Bibliography

  • Hickman, C.S. 1976. Pleurotomaria (Archaeogastropoda) in the Eocene of the northeastern Pacific: a review of Cenozoic biogeography and ecology of the genus. Journal of Paleontology 50. 1090–1102. .

Further reading

  • Williams S.T., Karube S. & Ozawa T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined. Zoologica Scripta 37: 483–506

External links

  • Fischer, P. (1880-1887). Manuel de conchyliologie et de paléontologie conchyliologique, ou histoire naturelle des mollusques vivants et fossiles suivi d'un Appendice sur les Brachiopodes par D. P. Oehlert. Avec 23 planches contenant 600 figures dessinées par S. P. Woodward.. Paris: F. Savy. Published in 11 parts (fascicules), xxiv + 1369 pp., 23 pls


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