Crassispira hanleyi is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.[1]

Description

The length of the shell attains 10 mm

This subacuminate, black shell is known by the fine costae, continued nearly to the base and the infrasutural keel.[2]

Taxonomy and Morphology: Crassispira hanleyi was first described by Carpenter in 1857. The species is characterized by having a tall spire and a truncated anterior canal, with ribs overridden by spirals forming beads or nodules. The shell of the snail is generally subclavate and tuberculated with a thick, lengthened spire.

Related Species: The genus Crassispira includes numerous species, with C. hanleyi being one among many. Other species in the same genus, like Crassispira incrassata, Crassispira cerithina, and Crassispira chacei, share similar morphological traits but have distinct characteristics or geographic distributions.

Historical Context: The genus Crassispira has been around since the Eocene epoch, suggesting a long evolutionary history. The species name hanleyi honors Hanley, likely referring to Sylvanus Hanley, a noted British conchologist of the 19th century.

Distribution

This species occurs in the Pacific Ocean from Mazatlan, Mexico to Nicaragua

References

  1. ^ "Crassispira hanleyi". Gastropods.com. Retrieved 12 January 2019.
  2. ^ Carpenter P.P. (1857) - Catalogue of the collection of Mazatlan shells in the British Museum, collected by Frederick Reigen Public Domain This article incorporates text from this source, which is in the public domain.


Allikas: http://en.wikipedia.org/wiki/Crassispira_hanleyi
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