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Peltoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Perisphinctaceae
Family:
Aspidoceratidae
Subfamily:
Peltoceratina
Formal Genus Name and Reference:
Peltoceras WAAGEN, 1871
Type Species:
Am. athleta PHILLIPS, 1829
Images
(Click to enlarge in a new window)
Fig. 442,7. *P. (P.) athleta (Phillips), Eng.; 7a,b, neotype, X0.75 (466*)
Synonyms
Geographic Distribution
Eu.-Madag.-Anatolia-Crimea-Donetz-Cauc. - Cutch -?Philip.-Mex.-S.Am.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Callov.)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
M.Jur.(U.Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Evolute, whorls hardly overlapping, ribs strong, bifurcating and trifurcating on ventral margin, venter nearly flat, outer whorls with 2 rows of massive lateral tubercles, outer row developing first
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Perisphinctaceae
Family:
Aspidoceratidae
Subfamily:
Peltoceratina
Formal Genus Name and Reference:
Peltoceras WAAGEN, 1871
Type Species:
Am. athleta PHILLIPS, 1829
Images
(Click to enlarge in a new window)
Fig. 442,7. *P. (P.) athleta (Phillips), Eng.; 7a,b, neotype, X0.75 (466*)
Synonyms
Geographic Distribution
Eu.-Madag.-Anatolia-Crimea-Donetz-Cauc. - Cutch -?Philip.-Mex.-S.Am.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Callov.)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
M.Jur.(U.Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Evolute, whorls hardly overlapping, ribs strong, bifurcating and trifurcating on ventral margin, venter nearly flat, outer whorls with 2 rows of massive lateral tubercles, outer row developing first