Conus symmetricus

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Conus symmetricus
Temporal range: Neogene
Conus symmetricus.jpg
Several specimens of a shell of Conus symmetricus; all images are reversed images of specimens photographed under UV light
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Conidae
Genus: Conus
Species:
†C. symmetricus
Binomial name
†Conus symmetricus
G. B. Sowerby I, 1850
Synonyms [1]
  • † Conus (Leptoconus) symmetricusSowerby I, Pflug, 1961
  • † Purpuriconus symmetricus(Sowerby I), Tucker and Tenorio, 2009

Conus symmetricus is an extinct species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails, cone shells or cones with a wide range of color and patterns. [1]

Contents

Description

The size of the shell varies between 17 mm and 46 mm. While consistent in the morph of the shell, specimens of Conus symmetricus show a wide range of color and pattern variation with a distinctive shell shape. Two general types include a base pattern which consists of irregularly-shaped streaks or spots that cover a great portion of the last whorl. The secondary pattern consists of about 17–20 spiral rows of dots that correspond with beaded spiral ribs on the basal two-thirds of the last whorl. The two patterns are slightly different in the color of emitted light. The second general type consists of a base pattern with three weakly-pigmented, discontinuous spiral bands. The secondary pattern includes about 20 spiral rows of dots, which sometimes come together near the shoulder to form streaks. The two patterns also are slightly different in the color of emitted light. [2]

Distribution

Conus symmetricus is a common species, especially in the Gurabo. [2] This marine species is only known as a fossil from the Neogene of the Dominican Republic.

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References

  1. 1 2 Bouchet, P. (2015). Conus symmetricus. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=843127 on 2015-12-08
  2. 1 2 Hendricks, Jonathan (2015). "Glowing Seashells: Diversity of Fossilized Coloration Patterns on Coral Reef-Associated Cone Snail (Gastropoda: Conidae) Shells from the Neogene of the Dominican Republic". PLOS ONE. 10 (4): e0120924. Bibcode:2015PLoSO..1020924H. doi: 10.1371/journal.pone.0120924 . PMC   4382297 . PMID   25830769.


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