Margarites groenlandicus

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Margarites groenlandicus
Margarites groenlandicus umbilicalis 001.jpg
Drawing with two views of a shell of Margarites groenlandicus umbilicalis
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Margaritidae
Genus: Margarites
Species:
M. groenlandicus
Binomial name
Margarites groenlandicus
(Gmelin, 1791)
Synonyms [1]
  • Eumargarita (Valvatella) groenlandica(Gmelin, 1791)
  • Margarita carnea(R.T. Lowe, 1825) (a junior synonym)
  • Margarita costellataG. B. Sowerby I, 1838 (dubious synonym)
  • Margarita groenlandicusGmelin, 1791
  • Margarita groenlandica spiralisBaker, 1919
  • Margarita groenlandica var. rudisMörch, 1869
  • Margarita sulcataSowerby I, 1838
  • Margarita undulataG. B. Sowerby I, 1838
  • Margarites (Margarites) groenlandica(Gmelin, 1791) · alternate representation (unaccepted combination)
  • Margarites shannonicusDall, 1919
  • Margarites spiralisF. C. Baker, 1919
  • Margarites striatus(Leach, 1819) ·
  • Margarites undulatus(G.B. Sowerby, I, 1838)
  • Trochus carneus(R.T. Lowe, 1825) junior subjective synonym (a junior synonym)
  • Trochus fabriciiPhilippi, 1850 (a junior synonym)
  • Trochus groenlandicusGmelin, 1791 (original combination)
  • Trochus groenlandicus var. albidaJeffreys, 1865
  • Trochus groenlandicus var. dilatataJeffreys, 1865
  • Trochus groenlandicus var. laeviorJeffreys, 1865
  • Trochus rossiPhilippi, 1852
  • Trochus umbilicalisBroderip & Sowerby, 1829Margarites undulata(G.B. Sowerby, I, 1838)
  • Trochus undulatus(G.B. Sowerby I, 1838)
  • Turbo carneusR. T. Lowe, 1825
  • Turbo incarnatusCouthouy, 1838 ·

Margarites groenlandicus, common name the Greenland margarite or wavy top shell, is a species of sea snail, a marine gastropod mollusk in the family Margaritidae. [1]

Contents

There are two subspecies :

Description

The wavy top shell is thin-shelled and rather small with a maximum length of 1.9 cm (¾ inch) and a compressed spire. The color of the glossy shell is cream to brown. It contains 4-5 whorls, with the body whorl the largest. The sutures are wavy. The shell is smooth or with about 12 smooth spiral ridges. The broad umbilicus is funnel-shaped. The nacreous aperture is oval with the long axis inclined to the left. It is also prosocline, i.e. with the growth lines leaning forward (adapically) with respect to the direction of the cone. The outer lip is thin. The sexes are separate but seldom differ externally. They are at the same time hermaphrodites but self-fertilization is prevented by anatomical mechanisms. The species is a suspension or deposit feeder.

Distribution and habitat

This species occurs across the Northern Atlantic Ocean, Greenland, the western coast of Norway, rarely along the British coast, the Gulf of Maine to Massachusetts Bay. It can be found from near the seashore to the bathyal zone.

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References

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