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Kosmoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Steogabicerataceae
Family:
Kosmoceratidae
Formal Genus Name and Reference:
Kosmoceras WAAGEN, 1869
Type Species:
Am. spinosus J.deC. SOWERBY, 1826 (ICZN Opinion 303)
Images
(Click to enlarge in a new window)
Fig. 364,5. *K. (K.) spinos/lm (Sow.), Eng.; 5a,b, topotype, X0.7 (7°).--FIG. 365,1. K. (K.) ornalum rOlundum (QUENST.); 1a,b, X I (358°)
Synonyms
Cosmoaras
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
U.Callov.
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
U.Callov.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Restricted subgenus moderately evolute, with simple a')er- ture; ribbing irregular, interrupted by irregular row of lateral tubercles; strong ventral tubercles separated by smooth ventral sulcus.
References
Waagen, Wilhelm, 1869, Die Formenreihe des Ammonites subradiatus: Geogn.-Paläont. Beitr., Band 2, Heft 2, p. 181-256, pl. 16-20.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Steogabicerataceae
Family:
Kosmoceratidae
Formal Genus Name and Reference:
Kosmoceras WAAGEN, 1869
Type Species:
Am. spinosus J.deC. SOWERBY, 1826 (ICZN Opinion 303)
Images
(Click to enlarge in a new window)
Fig. 364,5. *K. (K.) spinos/lm (Sow.), Eng.; 5a,b, topotype, X0.7 (7°).--FIG. 365,1. K. (K.) ornalum rOlundum (QUENST.); 1a,b, X I (358°)
Synonyms
Cosmoaras
Geographic Distribution
Age Range
Beginning Stage in Treatise Usage:
U.Callov.
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
70
Beginning Date:
162.66
Ending Stage in Treatise Usage:
U.Callov.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Restricted subgenus moderately evolute, with simple a')er- ture; ribbing irregular, interrupted by irregular row of lateral tubercles; strong ventral tubercles separated by smooth ventral sulcus.
References
Waagen, Wilhelm, 1869, Die Formenreihe des Ammonites subradiatus: Geogn.-Paläont. Beitr., Band 2, Heft 2, p. 181-256, pl. 16-20.