''Eoconus derelictus'' is an extinct

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of predatory sea snail, a marine gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

, in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Conidae.MolluscaBase (2018). ''Eoconus derelictus'' (Deshayes, 1865) †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1052051 on 2018-12-27

Description

The length of the shell attains 55 mm

Distribution

Fossils of this species were found in

Paris Basin The Paris Basin is one of the major geological regions of France. It developed since the Triassic over remnant uplands of the Variscan orogeny (Hercynian orogeny). The sedimentary basin, no longer a single drainage basin, is a large sag in th ...

, northwest

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...

, and were dated back to the late

Lutetian The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the ...

period.

References

* Tracey S., Craig B., Belliard L. & Gain O. (2017). One, four or forty species? - early Conidae (Mollusca, Gastropoda) that led to a radiation and biodiversity peak in the late Lutetian Eocene of the Cotentin, NW France. Carnets de Voyages Paléontologiques dans le Bassin Anglo-Parisien. 3: 1-38

External links

Worldwide Mollusc Species Data Base: ''Lithoconus derelictus''
derelictus Gastropods described in 1865 {{paleo-gastropod-stub