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Cossmannella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Carditacea
Family:
Carditidae
Subfamily:
Carditamerinae
Formal Genus Name and Reference:
Cossmannella MAYER-EYMAR, 1896
Type Species:
"Cardita (C.) aegyptiaca Fraas" of Mayer-Eymar, 1896 (=Cardium aegyptiacum Mayer, 1896, non Fraas, 1867, =Cardita fajumensis OPPENHEIM, 1903), OD
Images
(Click to enlarge in a new window)
Fig. E50,3. C. costaenodulosis Newton, M.Eoc., W.Afr. (Nigeria), 3a-c, RV ext., int., LV int., × 2 (99)
Synonyms
Amekiglans
Geographic Distribution
Afr.-Asia(India)
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
L.Mio.
Ending International Stage:
Burdigalian
Fraction Up In Ending Stage:
100
Ending Date:
15.99
Description
Transversely trigonal, subrounded in front, acuminate in rear, with flat ribs separated by narrow interspaces. Hinge with 3b nearly isosceles triangular, 2 and 4b subsymmetrical, anterior RV laterals obsolete. All and remote posterior lamellae well marked.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Carditacea
Family:
Carditidae
Subfamily:
Carditamerinae
Formal Genus Name and Reference:
Cossmannella MAYER-EYMAR, 1896
Type Species:
"Cardita (C.) aegyptiaca Fraas" of Mayer-Eymar, 1896 (=Cardium aegyptiacum Mayer, 1896, non Fraas, 1867, =Cardita fajumensis OPPENHEIM, 1903), OD
Images
(Click to enlarge in a new window)
Fig. E50,3. C. costaenodulosis Newton, M.Eoc., W.Afr. (Nigeria), 3a-c, RV ext., int., LV int., × 2 (99)
Synonyms
Amekiglans
Geographic Distribution
Afr.-Asia(India)
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
L.Mio.
Ending International Stage:
Burdigalian
Fraction Up In Ending Stage:
100
Ending Date:
15.99
Description
Transversely trigonal, subrounded in front, acuminate in rear, with flat ribs separated by narrow interspaces. Hinge with 3b nearly isosceles triangular, 2 and 4b subsymmetrical, anterior RV laterals obsolete. All and remote posterior lamellae well marked.