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Entolium
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pectinacea (scallops and relatives)
Family:
Entoliidae
Formal Genus Name and Reference:
Entolium MEEK, 1865
Type Species:
Pecten demissus Phillips, as illustr. by Quenstedt, 1858 (=Pecten disciforme Schuebler in ZIETEN, 1833), OD
Images
(Click to enlarge in a new window)
Synonyms
Geographic Distribution
M.Trias.-U.Cret., cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Trias.
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Byssal notch lacking at any stage, margins closed laterally, incised ligamental area usually present and extending parallel to hinge line on each side of ligamental pit, auricular crura present, inner shell layer calcite, foliate, outer layer radially fibrous in both valves
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pectinacea (scallops and relatives)
Family:
Entoliidae
Formal Genus Name and Reference:
Entolium MEEK, 1865
Type Species:
Pecten demissus Phillips, as illustr. by Quenstedt, 1858 (=Pecten disciforme Schuebler in ZIETEN, 1833), OD
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
M.Trias.-U.Cret., cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Trias.
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Byssal notch lacking at any stage, margins closed laterally, incised ligamental area usually present and extending parallel to hinge line on each side of ligamental pit, auricular crura present, inner shell layer calcite, foliate, outer layer radially fibrous in both valves