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Euchondria
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pectinacea (scallops and relatives)
Family:
Aviculopectinidae
Subfamily:
Euchondriinae
Formal Genus Name and Reference:
Euchondria MEEK, 1874, p. 445
Type Species:
Pecten neglectus Geinitz, M
Images
(Click to enlarge in a new window)
Fig. C65,1a. *E. neglecta (GE1nitz), U.Penn., Neb., LV ext., X5, Fig. C65,1b. E. subcancellata (Newell), M.Penn.(Desmoines.), Mo., RV hinge, X12
Synonyms
Geographic Distribution
N.Am.-Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
L. Miss.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Strongly prosocline, commonly produced posteriorly, hinge with central resilifer, as in Aviculopecten, LV ornamented by widely spaced intercalate costae, RV smooth or marked by concentric fila, inner ostracum crossed-lamellar aragonite, outer ostracum calcite with square prisms in RV, apparently structureless in LV.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pectinacea (scallops and relatives)
Family:
Aviculopectinidae
Subfamily:
Euchondriinae
Formal Genus Name and Reference:
Euchondria MEEK, 1874, p. 445
Type Species:
Pecten neglectus Geinitz, M
Images
(Click to enlarge in a new window)
Fig. C65,1a. *E. neglecta (GE1nitz), U.Penn., Neb., LV ext., X5, Fig. C65,1b. E. subcancellata (Newell), M.Penn.(Desmoines.), Mo., RV hinge, X12
Synonyms
Geographic Distribution
N.Am.-Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
L. Miss.
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Strongly prosocline, commonly produced posteriorly, hinge with central resilifer, as in Aviculopecten, LV ornamented by widely spaced intercalate costae, RV smooth or marked by concentric fila, inner ostracum crossed-lamellar aragonite, outer ostracum calcite with square prisms in RV, apparently structureless in LV.