''Vasum frequens'' is an extinct

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of medium to large

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Turbinellidae Turbinellidae are a family of sea snails, marine gastropod mollusks in the clade Neogastropoda. Members of this family are predators. Distribution Species in this family are found worldwide, mostly in tropical shallow waters but some in deep w ...

. MNHN, Paris: Vasum frequens
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Description

Measurements of the shell : 47 mm x 44 mm.

Distribution

Fossils of this marine species have been found in

Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...

strata of

Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...

References

* Cossmann (M.), 1901 Additions à la faune nummulitique d'Égypte. Bulletin de l'Institut Égyptien, sér. 4, t. 1, vol. 6, p. 173–197 * Cossmann (M.), 1901 Essais de Paléoconchologie comparée. livraison 4, p. 1–293, fig. 1-31 * Douvillé (H.), 1921 - Mélanges paléontologiques : genre Eovasum - Glauconiidae, Pleuroceratidae, Pirenidae - genre Itruvia. Journal de Conchyliologie, vol. 66, p. 1–18

External links

Cuvillier, Jean. "Contribution a l’etude geologique du Mokattam." Bulletin de l’Institut d’Egypte 6.1 (1923): 93-102.

Cossmann, Maurice. "Additions à la faune nummulitique d’Égypte." Bulletin de l’institut d’Égypte 4.1 (1900): 173-198.

frequens ''Frequens'' (''Frequent'') is the name for the decree passed at the Council of Constance on October 9, 1417; it was supposed to ensure that the Pope convened councils regularly. With this decree, the council participants determined that church ...

Gastropods described in 1895 {{paleo-gastropod-stub