''Megasurcula cryptoconoides'' is an extinct

species In biology, a species is the basic unit of Taxonomy (biology), 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 ...

of 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 es ...

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 ...

Pseudomelatomidae Pseudomelatomidae is a family of predatory sea snails, marine gastropods included in the superfamily Conoidea (previously Conacea) and part of the Neogastropoda ( Bouchet & Rocroi, 2005). In 1995 Kantor elevated the subfamily Pseudomelatominae ...

, the turrids and allies.Worldwide Mollusc Species Data Base: Megasurcula cryptoconoides
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Distribution

Fossils of this marine species have been found in Late

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" ...

strata in the Otokawa Formation, Japan.

References

*Makiyam, J. 1926. ''Tertiary Fossils from North Kankyo-do, Korea''. Memoirs of the College of Science, Kyoto Imperial University, ser. B, Vol. II, No. 3, pp. 143–160, pls. XI-XIII.

External links

The Tohoku University Museum: ''Megasurcula cryptoconoides''
cryptoconoides Gastropods described in 1926 {{paleo-Pseudomelatomidae-stub