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Arcomytilus
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Mytiloida
Superfamily:
Mytilacea (mussels)
Family:
Mytilidae
Subfamily:
Mytilinae
Formal Genus Name and Reference:
Arcomytilus Agassiz in J. SOWERBY, 1842, p. 318
Type Species:
Mytilus pectinatus J. Sowerby, 1821 (non Modiola pectinata Lamarck, 1819), =Mytilus subpectinatus D'ORBIGNY, 1850, OD
Images
(Click to enlarge in a new window)
Fig. C16,4. *A. pectinatus (Sowerby), Kimmeridg., Eng.(Weymouth), RV ext., X1 (Sowerby, 1821)
Synonyms
Geographic Distribution
Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
L. Jur.(Lias.)
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Wedgeshaped, posteriorly broadly truncate or subtruncate between 2 obtuse ridges. Surface with distinct concentric growth stops and radial striae bending toward dorsal margin and finer unilateral branching striae toward ventral margin which is finely crenulate.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Mytiloida
Superfamily:
Mytilacea (mussels)
Family:
Mytilidae
Subfamily:
Mytilinae
Formal Genus Name and Reference:
Arcomytilus Agassiz in J. SOWERBY, 1842, p. 318
Type Species:
Mytilus pectinatus J. Sowerby, 1821 (non Modiola pectinata Lamarck, 1819), =Mytilus subpectinatus D'ORBIGNY, 1850, OD
Images
(Click to enlarge in a new window)
Fig. C16,4. *A. pectinatus (Sowerby), Kimmeridg., Eng.(Weymouth), RV ext., X1 (Sowerby, 1821)
Synonyms
Geographic Distribution
Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
L. Jur.(Lias.)
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Wedgeshaped, posteriorly broadly truncate or subtruncate between 2 obtuse ridges. Surface with distinct concentric growth stops and radial striae bending toward dorsal margin and finer unilateral branching striae toward ventral margin which is finely crenulate.