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Pseudohaploceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Desmocerataceae
Family:
Desmoceratidae
Formal Genus Name and Reference:
Pseudohaploceras HYATT, 1900, p. 570
Type Species:
Ammonites liptoviensis ZEUSCHNER, 1856, p. 181, OD
Images
(Click to enlarge in a new window)
Fig. 52, 3a, b. *P. liptoviense (Zeuschner), Barremian, Austria, a, X 0.5, b, enlarged (Uhlig, 1883).
Synonyms
Pleurohaploceras
Geographic Distribution
Europe, Egypt (Sinai), Japan, Mexico, Colombia
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Barremian)
Beginning International Stage:
Barremian
Fraction Up In Beginning Stage:
0
Beginning Date:
126.5
Ending Stage in Treatise Usage:
Lower Cretaceous (Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
100
Ending Date:
113.2
Description
Moderately involute, slightly to moderately compressed, with convex sides, constrictions regular, straight or sinuous, collared in some, fairly fine, distinct, sharp or rounded, branching ribs between constrictions, extending from umbilical edge and crossing venter
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Desmocerataceae
Family:
Desmoceratidae
Formal Genus Name and Reference:
Pseudohaploceras HYATT, 1900, p. 570
Type Species:
Ammonites liptoviensis ZEUSCHNER, 1856, p. 181, OD
Images
(Click to enlarge in a new window)
Fig. 52, 3a, b. *P. liptoviense (Zeuschner), Barremian, Austria, a, X 0.5, b, enlarged (Uhlig, 1883).
Synonyms
Pleurohaploceras
Geographic Distribution
Europe, Egypt (Sinai), Japan, Mexico, Colombia
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Barremian)
Beginning International Stage:
Barremian
Fraction Up In Beginning Stage:
0
Beginning Date:
126.5
Ending Stage in Treatise Usage:
Lower Cretaceous (Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
100
Ending Date:
113.2
Description
Moderately involute, slightly to moderately compressed, with convex sides, constrictions regular, straight or sinuous, collared in some, fairly fine, distinct, sharp or rounded, branching ribs between constrictions, extending from umbilical edge and crossing venter