Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Docidoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Haplocerataceae
Family:
Otoitidae
Formal Genus Name and Reference:
Docidoceras BUCKMAN, 1919
Type Species:
D. cylindroides
Images
(Click to enlarge in a new window)
Fig. 341,4. °D. cylindroides, Eng.; 4a,b, X0.3 (65°).
Synonyms
Geographic Distribution
Eu.-N.Afr.-Ore.
Age Range
Beginning Stage in Treatise Usage:
M.Baj.
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
33
Beginning Date:
170
Ending Stage in Treatise Usage:
M.Baj.
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
66
Ending Date:
169.1
Description
Differs from the ancestral Erycites and Abbasites only by complete loss of keel and all signs of ventral discontinuity in ribbing. Includes a wide range of forms, some of which probably gave rise to Otoitidae, some to Stephanoceratidae, some to Sphaeroceratidae.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Haplocerataceae
Family:
Otoitidae
Formal Genus Name and Reference:
Docidoceras BUCKMAN, 1919
Type Species:
D. cylindroides
Images
(Click to enlarge in a new window)
Fig. 341,4. °D. cylindroides, Eng.; 4a,b, X0.3 (65°).
Synonyms
Geographic Distribution
Eu.-N.Afr.-Ore.
Age Range
Beginning Stage in Treatise Usage:
M.Baj.
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
33
Beginning Date:
170
Ending Stage in Treatise Usage:
M.Baj.
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
66
Ending Date:
169.1
Description
Differs from the ancestral Erycites and Abbasites only by complete loss of keel and all signs of ventral discontinuity in ribbing. Includes a wide range of forms, some of which probably gave rise to Otoitidae, some to Stephanoceratidae, some to Sphaeroceratidae.