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Protogrammoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Eoderocerataceae
Family:
Hildoceratidae
Formal Genus Name and Reference:
Protogrammoceras SPATH, 1913
Type Species:
Grammoceras bassanii Fucini, 1900, SD SPATH, 1919
Images
(Click to enlarge in a new window)
Fig. 289,11. *P. bassanii (FUCINI); 11a,b, XO.5 (161*)
Synonyms
Bassaniceras
Geographic Distribution
Eu.-N.Afr.-Madag.-C.Arabia-Baluch.-Japan
Age Range
Beginning Stage in Treatise Usage:
U.Pliensb.
Beginning International Stage:
Pliensbachian
Fraction Up In Beginning Stage:
50
Beginning Date:
188.55
Ending Stage in Treatise Usage:
L.Toarc.
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
50
Ending Date:
179.45
Description
Differs from Fuciniceras (which is prior to it in date) only in its more falcate ribbing, which is more projected at periphery. ?Subgen. of Fuciniuras.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Eoderocerataceae
Family:
Hildoceratidae
Formal Genus Name and Reference:
Protogrammoceras SPATH, 1913
Type Species:
Grammoceras bassanii Fucini, 1900, SD SPATH, 1919
Images
(Click to enlarge in a new window)
Fig. 289,11. *P. bassanii (FUCINI); 11a,b, XO.5 (161*)
Synonyms
Bassaniceras
Geographic Distribution
Eu.-N.Afr.-Madag.-C.Arabia-Baluch.-Japan
Age Range
Beginning Stage in Treatise Usage:
U.Pliensb.
Beginning International Stage:
Pliensbachian
Fraction Up In Beginning Stage:
50
Beginning Date:
188.55
Ending Stage in Treatise Usage:
L.Toarc.
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
50
Ending Date:
179.45
Description
Differs from Fuciniceras (which is prior to it in date) only in its more falcate ribbing, which is more projected at periphery. ?Subgen. of Fuciniuras.