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Torquatisphinctes
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Perisphinctidae
Formal Genus Name and Reference:
Torquatisphinctes SPATH, 1924
Type Species:
Am. torquatus
Images
(Click to enlarge in a new window)
Fig. 431,10. *T. torquatus (Sow.), Cutch, 10a,b, x0.7 (466*)
Synonyms
Geographic Distribution
Somali, Kenya, Madag, Cutch, S.Russia, Mex, Arg
Age Range
Beginning Stage in Treatise Usage:
L.Kimm.
Beginning International Stage:
Kimmeridgian
Fraction Up In Beginning Stage:
0
Beginning Date:
154.78
Ending Stage in Treatise Usage:
M.Kimm., ?U.Kimm.
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
66
Ending Date:
151.12
Description
Evolute, whorls rounded quadrate, with sharp biplicate and simple ribbing which does not modify on body chamber, lappets presumably present
References
Spath, L. F., 1924, On the ammonites of the Speeton Clay and the subdivisions of the Neocomian: Geol. Mag., v. 61, p. 73-89 (no illus.) Spath, L. F., 1924, The ammonites of the Blue Lias: Proc. Geol. Assoc., v. 35, p. 186-211, pl. 18.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Perisphinctidae
Formal Genus Name and Reference:
Torquatisphinctes SPATH, 1924
Type Species:
Am. torquatus
Images
(Click to enlarge in a new window)
Fig. 431,10. *T. torquatus (Sow.), Cutch, 10a,b, x0.7 (466*)
Synonyms
Geographic Distribution
Somali, Kenya, Madag, Cutch, S.Russia, Mex, Arg
Age Range
Beginning Stage in Treatise Usage:
L.Kimm.
Beginning International Stage:
Kimmeridgian
Fraction Up In Beginning Stage:
0
Beginning Date:
154.78
Ending Stage in Treatise Usage:
M.Kimm., ?U.Kimm.
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
66
Ending Date:
151.12
Description
Evolute, whorls rounded quadrate, with sharp biplicate and simple ribbing which does not modify on body chamber, lappets presumably present
References
Spath, L. F., 1924, On the ammonites of the Speeton Clay and the subdivisions of the Neocomian: Geol. Mag., v. 61, p. 73-89 (no illus.) Spath, L. F., 1924, The ammonites of the Blue Lias: Proc. Geol. Assoc., v. 35, p. 186-211, pl. 18.