Aesopus chrysalloideus

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Aesopus chrysalloideus
Aesopus chrysalloideus 001.jpg
Shell of Aesopus chrysalloideus (specimen at the Paleontological Research Institution)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Columbellidae
Genus: Aesopus
Species:
A. chrysalloideus
Binomial name
Aesopus chrysalloideus
(P. P. Carpenter, 1864)
Aesopus chrysalloideus - distribution.jpg
Synonyms [1]
  • † Aesopus idaeBartsch, 1918
  • Amycla chrysalloideaP. P. Carpenter, 1864 (original combination)

Aesopus chrysalloideus is a species of sea snail, a marine gastropod mollusk in the family Columbellidae, the dove snails. [1]

Contents

Description

The length of the shell attains 12.5 mm, its diameter 4.5 mm.

(Described as † Aesopus idae) The conical shell is very elongate, increasing regularly in size. The specimen has seven remaining whorls, with the extreme tip missing. The whorls of the protoconch are decollated. The teleoconch whorls are relatively high between the sutures, with a narrowly tabulated shoulder at the summit. The whorls are marked by irregular, retractively slanting growth lines, which are accentuated in the type specimen due to weathering of the specimen. Although there are indications of sculpture on the spire, the specimen is too worn to confirm this detail.

The base is protracted, with the anterior portion marked by the continuation of strong growth lines and indications of robust spiral lirations. The aperture is oval and distinctly channeled anteriorly, with an acute posterior angle. The outer lip is relatively thick. The inner lip is sigmoid, reflected over, and appressed to the base. The parietal wall is covered by a thick callus. [2]

Distribution

This marine species occurs off San Diego, California, USA.

Fossils were found in Quaternary strata in California. [3]

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References

  1. 1 2 WoRMS. "Aesopus chrysalloideus (P. P. Carpenter, 1864)". World Register of Marine Species . Retrieved 6 June 2024.
  2. ↑ Bartsch, P. (1918). Two new species of fossil marine shells from California. Proceedings of the Biological Society of Washington. 31: 79-80 PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. ↑ W. H. Dall. 1921. Summary of the marine shellbearing mollusks of the northwest coast of America, from San Diego, California, to the Polar Sea, mostly contained in the collection of the Unites States, with illustrations of hitherto unfigured species. United States National Museum Bulletin 112:1-217
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