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Conostichoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Oncocerida
Family:
Nothoceratidae
Formal Genus Name and Reference:
Conostichoceras FOERSTE, 1926, p. 341
Type Species:
Cyrtoceras palinurus BARRANDE, 1877, p. 37, OD
Images
(Click to enlarge in a new window)
Fig. 218, 6. *C. palinurus (Barrande), M.Dev., Czech., 6a,b, ventral, lat. (venter right), x0.3 (5)"
Synonyms
Geographic Distribution
Eu. (Czech.), U. Dev., Australia
Age Range
Beginning Stage in Treatise Usage:
M.Dev., U. Dev.
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev., U. Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Similar externally to Turnoceras, but lateral profiles slightly convex, converging near aperture, Siphuncle ventral, segments nummuloidal in adapical half of camera, but with concave profiles in adoral half, actinosiphonate
References
Foerste, A. F., 1926, Actinosiphonate, trochoceroid and other cephalopods: Denison Univ. Bull., Jour. Sci. Lab., v. 21, p. 285-383, pl. 22-53.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Oncocerida
Family:
Nothoceratidae
Formal Genus Name and Reference:
Conostichoceras FOERSTE, 1926, p. 341
Type Species:
Cyrtoceras palinurus BARRANDE, 1877, p. 37, OD
Images
(Click to enlarge in a new window)
Fig. 218, 6. *C. palinurus (Barrande), M.Dev., Czech., 6a,b, ventral, lat. (venter right), x0.3 (5)"
Synonyms
Geographic Distribution
Eu. (Czech.), U. Dev., Australia
Age Range
Beginning Stage in Treatise Usage:
M.Dev., U. Dev.
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev., U. Dev.
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Similar externally to Turnoceras, but lateral profiles slightly convex, converging near aperture, Siphuncle ventral, segments nummuloidal in adapical half of camera, but with concave profiles in adoral half, actinosiphonate
References
Foerste, A. F., 1926, Actinosiphonate, trochoceroid and other cephalopods: Denison Univ. Bull., Jour. Sci. Lab., v. 21, p. 285-383, pl. 22-53.