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Devonobactrites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Bactritoidea
Order:
Bactritida
Family:
Bactritida - Doubtful genera
Formal Genus Name and Reference:
Devonobactrites SHIMANSKIY, 1962
Type Species:
Orthoceratites obliquiseptatum Sandberger & SANDBERGER, 1852, OD
Images
(Click to enlarge in a new window)
Fig. 361, 2. *D. obliquiseptatus (Sandberger & Sandberger), 2a,b, vent., lat. with venter on right, ×2, 2c, adoral, all ×1 (19).
Synonyms
Geographic Distribution
Eu. (Ger.)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Like Bactrites. Sutures dorsally inclined and camerae relatively low (27). Generic independence doubtful because of highly variable orientation of sutures within single individuals of certain representatives of Bactrites. Lowness of camerae in this case appears not to be a diagnostic criterion, being caused here by normal crowding of sutures in late ontogenetic stages, which occurs in all ectocochleate cephalopods.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Bactritoidea
Order:
Bactritida
Family:
Bactritida - Doubtful genera
Formal Genus Name and Reference:
Devonobactrites SHIMANSKIY, 1962
Type Species:
Orthoceratites obliquiseptatum Sandberger & SANDBERGER, 1852, OD
Images
(Click to enlarge in a new window)
Fig. 361, 2. *D. obliquiseptatus (Sandberger & Sandberger), 2a,b, vent., lat. with venter on right, ×2, 2c, adoral, all ×1 (19).
Synonyms
Geographic Distribution
Eu. (Ger.)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Like Bactrites. Sutures dorsally inclined and camerae relatively low (27). Generic independence doubtful because of highly variable orientation of sutures within single individuals of certain representatives of Bactrites. Lowness of camerae in this case appears not to be a diagnostic criterion, being caused here by normal crowding of sutures in late ontogenetic stages, which occurs in all ectocochleate cephalopods.