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Margarites
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Trochina
Superfamily:
Trochacea
Family:
Trochidae
Subfamily:
Margaritinae
Formal Genus Name and Reference:
Margarites GRAY, 1847
Type Species:
Trochus helicinus Fabricius, 1780 (? = Turbo helicinus PHIPPS, 1774)
Images
(Click to enlarge in a new window)
Fig. 161,4. *M. (M.) helicinus (Fabricius), Rec., N.Atl., X2 (147).
Synonyms
Margarita, Eumargarita, Valvatella
Geographic Distribution
Eu.-N.Am.-Arct.-Carib.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Smooth or spirally ribbed, nacre conspicuous
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Trochina
Superfamily:
Trochacea
Family:
Trochidae
Subfamily:
Margaritinae
Formal Genus Name and Reference:
Margarites GRAY, 1847
Type Species:
Trochus helicinus Fabricius, 1780 (? = Turbo helicinus PHIPPS, 1774)
Images
(Click to enlarge in a new window)
Fig. 161,4. *M. (M.) helicinus (Fabricius), Rec., N.Atl., X2 (147).
Synonyms
Margarita, Eumargarita, Valvatella
Geographic Distribution
Eu.-N.Am.-Arct.-Carib.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Smooth or spirally ribbed, nacre conspicuous