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Naiadites
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Ambonychiacea
Family:
Myalinidae
Subfamily:
Non-marine and brackish types
Formal Genus Name and Reference:
Naiadites DAWSON, 1860
Type Species:
N. carbonarius, SD HIND, 1894
Images
(Click to enlarge in a new window)
Fig. C31,4. *N. carbonarius, U.Carb., N.Scot., lectotype, 4 a, LV ext., X3, 4 b, LV int., showing ant. musculature and duplivincular ligamental area, X5 (666).
Synonyms
Geographic Distribution
L.Carb.(Dinant.), Scot., U.Carb., Eu.-N.Am. (Namur., G.Brit., Westphal. A,B, W.Eu., USSR, Donetz)
Age Range
Beginning Stage in Treatise Usage:
L.Carb., U.Carb.(Dinant.)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb., U.Carb.(Dinant.)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Like Myalina internally, apart from minor differences of anterior musculature resulting from relatively greater length of anterior end in Naiadites, modioliform, umbones not terminal. Ligament duplivincular, slightly amphidetic, area narrow, marked by grooves (2 to 7 or 8) of ligamental attachment
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Ambonychiacea
Family:
Myalinidae
Subfamily:
Non-marine and brackish types
Formal Genus Name and Reference:
Naiadites DAWSON, 1860
Type Species:
N. carbonarius, SD HIND, 1894
Images
(Click to enlarge in a new window)
Fig. C31,4. *N. carbonarius, U.Carb., N.Scot., lectotype, 4 a, LV ext., X3, 4 b, LV int., showing ant. musculature and duplivincular ligamental area, X5 (666).
Synonyms
Geographic Distribution
L.Carb.(Dinant.), Scot., U.Carb., Eu.-N.Am. (Namur., G.Brit., Westphal. A,B, W.Eu., USSR, Donetz)
Age Range
Beginning Stage in Treatise Usage:
L.Carb., U.Carb.(Dinant.)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Carb., U.Carb.(Dinant.)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Like Myalina internally, apart from minor differences of anterior musculature resulting from relatively greater length of anterior end in Naiadites, modioliform, umbones not terminal. Ligament duplivincular, slightly amphidetic, area narrow, marked by grooves (2 to 7 or 8) of ligamental attachment