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Neohoploceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Neocomitidae
Formal Genus Name and Reference:
Neohoploceras SPATH, 1939a, p. 105
Type Species:
Ammonites submartini MALLADA, 1887, p. 17, OD
Images
(Click to enlarge in a new window)
Fig. 44, 5a, b. *N. submartini (Mallada), Salt Range, X 0.75 (Spath, 1939a)"
Synonyms
Arnoldia
Geographic Distribution
England, France, Germany, Spain, Madagascar, Pakistan (Salt Range)
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Upper Valanginian)
Beginning International Stage:
Valanginian
Fraction Up In Beginning Stage:
45
Beginning Date:
135.41
Ending Stage in Treatise Usage:
Lower Cretaceous (Upper Valanginian)
Ending International Stage:
Valanginian
Fraction Up In Ending Stage:
100
Ending Date:
132.6
Description
Inner whorls inflated, with ribs branching irregularly from umbilical and midlateral tubercles, some simple, deep constrictions with collars behind, commonly flared ventrolaterally, venter grooved, concave, or rounded, outer whorls becoming compressed, without constrictions
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Neocomitidae
Formal Genus Name and Reference:
Neohoploceras SPATH, 1939a, p. 105
Type Species:
Ammonites submartini MALLADA, 1887, p. 17, OD
Images
(Click to enlarge in a new window)
Fig. 44, 5a, b. *N. submartini (Mallada), Salt Range, X 0.75 (Spath, 1939a)"
Synonyms
Arnoldia
Geographic Distribution
England, France, Germany, Spain, Madagascar, Pakistan (Salt Range)
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Upper Valanginian)
Beginning International Stage:
Valanginian
Fraction Up In Beginning Stage:
45
Beginning Date:
135.41
Ending Stage in Treatise Usage:
Lower Cretaceous (Upper Valanginian)
Ending International Stage:
Valanginian
Fraction Up In Ending Stage:
100
Ending Date:
132.6
Description
Inner whorls inflated, with ribs branching irregularly from umbilical and midlateral tubercles, some simple, deep constrictions with collars behind, commonly flared ventrolaterally, venter grooved, concave, or rounded, outer whorls becoming compressed, without constrictions