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Prodactylioceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Eoderocerataceae
Family:
Dactylioceratidae
Formal Genus Name and Reference:
Prodactylioceras SPATH, 1923
Type Species:
Am. davoei J.SOWERBY, 1822
Images
(Click to enlarge in a new window)
Fig. 283,1. *. davoci (Sow.), Eng., 1a,b, * (737*)
Synonyms
Paralytoceras, Praedactyloceras
Geographic Distribution
Eu.-Can.-Chile
Age Range
Beginning Stage in Treatise Usage:
L.Pliensb.(davoei z.)
Beginning International Stage:
Pliensbachian
Fraction Up In Beginning Stage:
0
Beginning Date:
192.9
Ending Stage in Treatise Usage:
L.Pliensb.(davoei z.)
Ending International Stage:
Pliensbachian
Fraction Up In Ending Stage:
50
Ending Date:
188.55
Description
Evolute, ribs fine, mainly simple, with sporadic ventrolateral tubercles, Sutures somewhat complex, with large ramifying 1st lateral lobe
References
Spath, L. F., 1923, The ammonites of the Shales-withBeef: Quart. Jour. Geol. Soc. (London), v. 79, p. 66-88.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Eoderocerataceae
Family:
Dactylioceratidae
Formal Genus Name and Reference:
Prodactylioceras SPATH, 1923
Type Species:
Am. davoei J.SOWERBY, 1822
Images
(Click to enlarge in a new window)
Fig. 283,1. *. davoci (Sow.), Eng., 1a,b, * (737*)
Synonyms
Paralytoceras, Praedactyloceras
Geographic Distribution
Eu.-Can.-Chile
Age Range
Beginning Stage in Treatise Usage:
L.Pliensb.(davoei z.)
Beginning International Stage:
Pliensbachian
Fraction Up In Beginning Stage:
0
Beginning Date:
192.9
Ending Stage in Treatise Usage:
L.Pliensb.(davoei z.)
Ending International Stage:
Pliensbachian
Fraction Up In Ending Stage:
50
Ending Date:
188.55
Description
Evolute, ribs fine, mainly simple, with sporadic ventrolateral tubercles, Sutures somewhat complex, with large ramifying 1st lateral lobe
References
Spath, L. F., 1923, The ammonites of the Shales-withBeef: Quart. Jour. Geol. Soc. (London), v. 79, p. 66-88.