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Mesosaccella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeotaxodonta
Order:
Nuculoida
Superfamily:
Nuculanacea
Family:
Nuculanidae
Formal Genus Name and Reference:
Mesosaccella CHAVAN, 1946, p. 197
Type Species:
Nucula foersteri MÜLLER, 1847, OD
Images
(Click to enlarge in a new window)
Fig. A7,6. *M. foersteri (Müller), 6a,b, dorsal view of both valves, RV ext., X2, X 3 (650).
Synonyms
Geographic Distribution
Eu
Age Range
Beginning Stage in Treatise Usage:
Cretaceous
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cretaceous
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
No ligamental fossettes, ligament external, behind beaks, a depressed widening below beaks foreshadowing the fossette. Outline and sculpture of Saccella.
References
Chavan, André, 1946, Notes sur les Jagonia (lamellibranches): Muséum Natl. Histoire Nat., Bull., v. 18, no. 1, p. 87-90.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeotaxodonta
Order:
Nuculoida
Superfamily:
Nuculanacea
Family:
Nuculanidae
Formal Genus Name and Reference:
Mesosaccella CHAVAN, 1946, p. 197
Type Species:
Nucula foersteri MÜLLER, 1847, OD
Images
(Click to enlarge in a new window)
Fig. A7,6. *M. foersteri (Müller), 6a,b, dorsal view of both valves, RV ext., X2, X 3 (650).
Synonyms
Geographic Distribution
Eu
Age Range
Beginning Stage in Treatise Usage:
Cretaceous
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cretaceous
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
No ligamental fossettes, ligament external, behind beaks, a depressed widening below beaks foreshadowing the fossette. Outline and sculpture of Saccella.
References
Chavan, André, 1946, Notes sur les Jagonia (lamellibranches): Muséum Natl. Histoire Nat., Bull., v. 18, no. 1, p. 87-90.