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Trocholites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Tarphycerida
Family:
Trocholitidae
Formal Genus Name and Reference:
Trocholites CONRAD, 1838, p. 118
Type Species:
T. ammonius, OD
Images
(Click to enlarge in a new window)
Figs. 256,2; 259, 5. *T. ammonius, M.Ord.(Trenton.), USA(N.Y.); 256,2a-c, long. sec., and lat. views, Xo.7; 259,5, whorl sec., XU (83)
Synonyms
Palaeonautilus
Geographic Distribution
N. Am. (widespread)-Eu.(Balto-Scandia)
Age Range
Beginning Stage in Treatise Usage:
M.Ord. (Chazy.)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
56.9
Beginning Date:
463.02
Ending Stage in Treatise Usage:
U. Ord. (Richmond.)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
100
Ending Date:
445.21
Description
Conch gradually expanded, weakly ribbed; whorls strongly depressed, weakly impressed, rounded across venter and flanks; siphuncle subdorsal.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Tarphycerida
Family:
Trocholitidae
Formal Genus Name and Reference:
Trocholites CONRAD, 1838, p. 118
Type Species:
T. ammonius, OD
Images
(Click to enlarge in a new window)
Figs. 256,2; 259, 5. *T. ammonius, M.Ord.(Trenton.), USA(N.Y.); 256,2a-c, long. sec., and lat. views, Xo.7; 259,5, whorl sec., XU (83)
Synonyms
Palaeonautilus
Geographic Distribution
N. Am. (widespread)-Eu.(Balto-Scandia)
Age Range
Beginning Stage in Treatise Usage:
M.Ord. (Chazy.)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
56.9
Beginning Date:
463.02
Ending Stage in Treatise Usage:
U. Ord. (Richmond.)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
100
Ending Date:
445.21
Description
Conch gradually expanded, weakly ribbed; whorls strongly depressed, weakly impressed, rounded across venter and flanks; siphuncle subdorsal.