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Armenoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Actinoceratoidea
Order:
Actinocerida
Family:
Armenoceratidae
Formal Genus Name and Reference:
Armenoceras FOERSTE, 1924
Type Species:
Actinoceras hearsti PARKS, 1913, OD
Images
(Click to enlarge in a new window)
Fig. 146, 1a-c. A. arcticum (Troedsson), M.Ord. or ?U. Ord., N.Greenl., 1a, dorsal side of weathered specimen, x0.5, 1b,c, lat. long. and transv. secs., x0.5 (194). -- Fig. 146, 1d. A. richardsoni (Stokes), Ord., Can., recumbent septal neck, x5 (78)
Synonyms
Yabeites, Neowutinoceras, Eushantungoceras, Shantungoceras, Linormoceras, Tunguskoceras, Kokujoceras
Geographic Distribution
N.Am.-Greenl.-N.Eu. (USSR)-Asia-Australia
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
U.Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Medium-sized to large straight shell, Siphuncle off center, large, adnation areas broad, septal necks very short, brims wide and in contact with posterior surface of septa; endosiphuncular canals well developed, commonly complex. Cameral deposits rare
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Actinoceratoidea
Order:
Actinocerida
Family:
Armenoceratidae
Formal Genus Name and Reference:
Armenoceras FOERSTE, 1924
Type Species:
Actinoceras hearsti PARKS, 1913, OD
Images
(Click to enlarge in a new window)
Fig. 146, 1a-c. A. arcticum (Troedsson), M.Ord. or ?U. Ord., N.Greenl., 1a, dorsal side of weathered specimen, x0.5, 1b,c, lat. long. and transv. secs., x0.5 (194). -- Fig. 146, 1d. A. richardsoni (Stokes), Ord., Can., recumbent septal neck, x5 (78)
Synonyms
Yabeites, Neowutinoceras, Eushantungoceras, Shantungoceras, Linormoceras, Tunguskoceras, Kokujoceras
Geographic Distribution
N.Am.-Greenl.-N.Eu. (USSR)-Asia-Australia
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
U.Sil.
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Medium-sized to large straight shell, Siphuncle off center, large, adnation areas broad, septal necks very short, brims wide and in contact with posterior surface of septa; endosiphuncular canals well developed, commonly complex. Cameral deposits rare