Viviparus carinifer

Viviparus carinifer is an extinct species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails. It lived between the Bathonian[2] and Bartonian[3] epochs; although it may have persisted into the Oligocene.[3]

Viviparus carinifer Temporal range: Bathonian–Bartonian PreꞒ Ꞓ O S D C P T J K Pg N
Drawing of a shell of Viviparus carinifer from its type description.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Caenogastropoda informal group Architaenioglossa
Superfamily:	Viviparoidea
Family:	Viviparidae
Subfamily:	Viviparinae
Genus:	Viviparus
Species:	†V. carinifer
Binomial name
†Viviparus carinifer (Sowerby, 1826)[1]
Synonyms
Paludina carinifera Sowerby, 1826

V. carinifer is often found preserved in Purbeck Marble,[4] although it has also been found in Oxfordshire and Gloucestershire.[1]

Koumpiodontosuchus aprosdokiti feeding on Viviparus carinifer.

Purbeck Marble with shells of Viviparus carinifer.

References

1. Sowerby J. de C. (1826–29). The Mineral Conchology of Great Britain; or Coloured Figures and Descriptions of Those Remains of Testaceous Animals or Shells, Which Have Been Preserved at Various Times and Depths in the Earth. Volume 6. 230 pp. Richard Taylor, London (series begin by father, J. Sowerby). Tab. 509, fig. 3, page 12.
2. J. D. Hudson, J. B. Riding, M. I. Wakefield and W. Walton. 1995. Jurassic Paleosalinities and Brackish-water Communities-A Case Study. Palaios 10(5):392-405 [A. Miller/D. Schramm/D. Schramm]
3. A. A. Bosma. 1974. Rodent biostratigraphy of the Eocene-Oligocene transitional strata of the Isle of Wight. Utrecht Micropaleontological Bulletins. Special Publication 1:1-113 [J. Alroy/E. Leckey/E. Leckey]
4. Blair J., Blair W. J. & Ramsay N. (eds.) (1991). English medieval industries: craftsmen, techniques, products. A&C Black. page 42.