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Palaeolima
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Limacea
Family:
Limidae
Formal Genus Name and Reference:
Palaeolima HIND, 1903, p. 38
Type Species:
Pecten simplex Phillips, 1836, p. 212, SD COX, 1952, p. 48
Images
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Synonyms
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
L.Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb.
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Small, obliquely ovate, opisthocline, length commonly slightly exceeding height, inflation moderate, beaks near middle of moderately long hinge margin, auricles obtuse, no distinct umbonal ridge, surface smooth or with radial ribs, grouped in pairs or bunches in some species. Differs very little from Plagiostoma, but size is invariably small and umbonal ridge and lunule are absent.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Limacea
Family:
Limidae
Formal Genus Name and Reference:
Palaeolima HIND, 1903, p. 38
Type Species:
Pecten simplex Phillips, 1836, p. 212, SD COX, 1952, p. 48
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
L.Carb.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb.
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Small, obliquely ovate, opisthocline, length commonly slightly exceeding height, inflation moderate, beaks near middle of moderately long hinge margin, auricles obtuse, no distinct umbonal ridge, surface smooth or with radial ribs, grouped in pairs or bunches in some species. Differs very little from Plagiostoma, but size is invariably small and umbonal ridge and lunule are absent.