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Sphaera
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Fimbriidae
Formal Genus Name and Reference:
Sphaera SOWERBY, 1822
Type Species:
S. corrugata, SD STOLICZKA, 1871
Images
(Click to enlarge in a new window)
Fig. E18,1. *S. corrugata, Neocom., France, 1a, b, RV and LV hinges, X2 (Chavan, n , after d'Orbigny & Woods).
Synonyms
Palaeocorbis
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
L. Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
L. Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Rounded, inflated, solid, subequilateral, with inflated nearly orthogyrous beaks, surface with corrugated concentric ribs, hinge strong, cyclodont, RV with strong anterior lateral, subhorizontal anterior cardinal, and arcuate posterior lateral, LV with anterior lateral fused with anterior cardinal and ill-defined posterior lateral, each valve with 2 remote posterior laterals
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Fimbriidae
Formal Genus Name and Reference:
Sphaera SOWERBY, 1822
Type Species:
S. corrugata, SD STOLICZKA, 1871
Images
(Click to enlarge in a new window)
Fig. E18,1. *S. corrugata, Neocom., France, 1a, b, RV and LV hinges, X2 (Chavan, n , after d'Orbigny & Woods).
Synonyms
Palaeocorbis
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
L. Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
L. Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Rounded, inflated, solid, subequilateral, with inflated nearly orthogyrous beaks, surface with corrugated concentric ribs, hinge strong, cyclodont, RV with strong anterior lateral, subhorizontal anterior cardinal, and arcuate posterior lateral, LV with anterior lateral fused with anterior cardinal and ill-defined posterior lateral, each valve with 2 remote posterior laterals