''Conasprella imitator'' is an extinct species of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk in the family

Conidae Conidae, with the current common name of "cone snails", is a taxonomic family (previously subfamily) of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea. The 2014 classification of the superfamily Conoidea, groups onl ...

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cone snails A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines ...

and their allies.MolluscaBase (2018). Conasprella imitator (A. P. Brown & Pilsbry, 1911) †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1289690 on 2018-12-27

Description

The length of the shell attains 35 mm, its diameter 12 mm. (Original description) The cone is about twice as long as wide and contains 12

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s. The spire forms about one fourth of the length. The spire is concave and acuminate in the upper third. The first 3 whorls are smooth, the next 4 or 5 whorls having a smooth carina projecting above the suture, the first 2½ of them tuberculate, after which the carina is smooth. The following whorls are less steeply sloping, very slightly concave, marked with fine growth lines and a few weak spiral striae, slightly prominent at the sutures. The

body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...

is acutely carinate, the slope below the angle almost straight, but just perceptibly convex in the upper, concave in the lower half, which is sculptured with about 16 rather strong spiral cords. The outer lip arches strongly forward and is deeply retracted at the upper end.
Brown, Amos P., and Henry A. Pilsbry. "Fauna of the Gatun formation, Isthmus of Panama." Proceedings of the Academy of Natural Sciences of Philadelphia (1911): 336-373
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Distribution

Fossils of this marine species were found in the Gatun Formation, Panama.

References

External links

Hendricks J.R. (2018). Diversity and preserved shell coloration patterns of Miocene Conidae (Neogastropoda) from an exposure of the Gatun Formation, Colón Province, Panama. Journal of Paleontology. 10.1017/jpa.2017.153: 34 pp
{{Taxonbar, from=Q60180797 imitator Gastropods described in 1911