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Procheloniceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Suborder:
Ancyloceratina
Superfamily:
Douvilleicerataceae
Family:
Douvilleiceratidae
Subfamily:
Cheloniceratinae
Formal Genus Name and Reference:
Procheloniceras SPATH, 1923d, p. 64
Type Species:
Ammonites stobieckii ORBIGNY, 1850a, p. 113, OD
Images
(Click to enlarge in a new window)
Fig. 208, 6. P. albrechtiaustriae (Unlig), France, X0.3 (Kilian, 19071913)
Synonyms
Geographic Distribution
France, Germany, Poland, Russia, Texas
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Lower Aptian)
Beginning International Stage:
Aptian
Fraction Up In Beginning Stage:
0
Beginning Date:
121.4
Ending Stage in Treatise Usage:
Lower Cretaceous (Lower Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
33
Ending Date:
118.69
Description
Rather evolute, whorl section circular to oval, enlarging less rapidly than in Paraspiticeras, ribs more or less equal, branching at umbilical or midlateral tubercles in middle growth, tubercles later disappearing
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Suborder:
Ancyloceratina
Superfamily:
Douvilleicerataceae
Family:
Douvilleiceratidae
Subfamily:
Cheloniceratinae
Formal Genus Name and Reference:
Procheloniceras SPATH, 1923d, p. 64
Type Species:
Ammonites stobieckii ORBIGNY, 1850a, p. 113, OD
Images
(Click to enlarge in a new window)
Fig. 208, 6. P. albrechtiaustriae (Unlig), France, X0.3 (Kilian, 19071913)
Synonyms
Geographic Distribution
France, Germany, Poland, Russia, Texas
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Lower Aptian)
Beginning International Stage:
Aptian
Fraction Up In Beginning Stage:
0
Beginning Date:
121.4
Ending Stage in Treatise Usage:
Lower Cretaceous (Lower Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
33
Ending Date:
118.69
Description
Rather evolute, whorl section circular to oval, enlarging less rapidly than in Paraspiticeras, ribs more or less equal, branching at umbilical or midlateral tubercles in middle growth, tubercles later disappearing