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Progonoceratites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Ceratitaceae
Family:
Ceratitidae
Formal Genus Name and Reference:
Progonoceratites SCHRAMMEN, 1928
Type Species:
Ceratites atavus Philippi, 1901, SD SPATH, 1934
Images
(Click to enlarge in a new window)
Fig. 184,6. *P. atavus (Phil.), Ger.; 6a,b, X0.7 (681')
Synonyms
Actinoceratites, Caloceratites, Campyloceratites, Leioceratites
Geographic Distribution
Ger.-Fr.
Age Range
Beginning Stage in Treatise Usage:
Ladin.
Beginning International Stage:
Ladinian
Fraction Up In Beginning Stage:
0
Beginning Date:
241.46
Ending Stage in Treatise Usage:
Ladin.
Ending International Stage:
Ladinian
Fraction Up In Ending Stage:
100
Ending Date:
237
Description
Like Ceratites, with ornamented inner whorls but more compressed and body chamber more or less smooth
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Ceratitaceae
Family:
Ceratitidae
Formal Genus Name and Reference:
Progonoceratites SCHRAMMEN, 1928
Type Species:
Ceratites atavus Philippi, 1901, SD SPATH, 1934
Images
(Click to enlarge in a new window)
Fig. 184,6. *P. atavus (Phil.), Ger.; 6a,b, X0.7 (681')
Synonyms
Actinoceratites, Caloceratites, Campyloceratites, Leioceratites
Geographic Distribution
Ger.-Fr.
Age Range
Beginning Stage in Treatise Usage:
Ladin.
Beginning International Stage:
Ladinian
Fraction Up In Beginning Stage:
0
Beginning Date:
241.46
Ending Stage in Treatise Usage:
Ladin.
Ending International Stage:
Ladinian
Fraction Up In Ending Stage:
100
Ending Date:
237
Description
Like Ceratites, with ornamented inner whorls but more compressed and body chamber more or less smooth