''Crommium'' is an extinct

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

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 ...

s, 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 ...

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

s 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 ...

Ampullinidae Ampullinidae are a mostly extinct taxonomic family of sea snails, marine gastropod molluscs in the clade Caenogastropoda.Bouchet, P. (2013). Ampullinidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.p ...

Species

Species within the genus ''Crommium'' include:Fossilworks
/ref> *† ''Crommium andersoni'' Dickerson, 1914 *† '' Crommium angustatum'' Grateloup, 1828 *† ''Crommium ferrugineum'' (Great.) *† ''Crommium globosa'' Perrilliat ''et al.'', 2006 *† ''Crommium hosgori'' Pacaud, 2016 *† ''Crommium intermedia'' Deshayes, 1832 *† ''Crommium masinguiensis'' Clark and Durham, 1946 *† ''Crommium palmasensis'' Clark and Durham, 1946 *† ''Crommium palmerae'' Clark and Durham, 1946 *† ''Crommium perovatum'' Conrad, 1846 *† ''Crommium pinyonensis'' Dickerson, 1914 *† ''Crommium pseudowillemeti'' Eames, 1952 *† ''Crommium rouaulti'' d'Archiac and Haime, 1854 *† ''Crommium willemettii'' Deshayes, 1825 Fossils of the sea snails within this genus have been found in sediments of

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

Somalia Somalia, officially the Federal Republic of Somalia, is the easternmost country in continental Africa. The country is located in the Horn of Africa and is bordered by Ethiopia to the west, Djibouti to the northwest, Kenya to the southwest, th ...

and

Nigeria Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...

from

Paleocene The Paleocene ( ), or Palaeocene, is a geological epoch (geology), epoch that lasted from about 66 to 56 mya (unit), million years ago (mya). It is the first epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), ...

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 ...

(age range: 61.7 to 23.03 million years ago). Image:Crommium acutum 01.jpg, '' Crommium acutum'' File:Crommium ponderosum 01.jpg, '' Crommium ponderosum''

References

"I molluschi dei terreni terziarii del Piemonte e della Liguria"
Ampullinidae Paleocene first appearances Eocene genus extinctions Prehistoric gastropod genera {{Caenogastropoda-stub