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Allumettoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Oncocerida
Family:
Tripteroceratidae
Formal Genus Name and Reference:
Allumettoceras FOERSTE, 1926, p. 311
Type Species:
Tripteroceras pauquettense FOERSTE, 1924, p. 233, OD
Images
(Click to enlarge in a new window)
Fig. 205, 2. *A. pauquettense (Foerste), M.Ord., Can. (Ont.), 2a, b, septum (venter down), ventral, x1 (53).
Synonyms
Geographic Distribution
N.Am.-Eu. (Est.-Norway)
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.Ord.
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Orthocones or faintly exogastric cyrtocones with flattened venter, broadly arched dorsum, narrowly rounded sides. Early siphuncle suborthochoanitic, later stages cyrtochoanitic, with subspherical, empty segments
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:
Tripteroceratidae
Formal Genus Name and Reference:
Allumettoceras FOERSTE, 1926, p. 311
Type Species:
Tripteroceras pauquettense FOERSTE, 1924, p. 233, OD
Images
(Click to enlarge in a new window)
Fig. 205, 2. *A. pauquettense (Foerste), M.Ord., Can. (Ont.), 2a, b, septum (venter down), ventral, x1 (53).
Synonyms
Geographic Distribution
N.Am.-Eu. (Est.-Norway)
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.Ord.
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Orthocones or faintly exogastric cyrtocones with flattened venter, broadly arched dorsum, narrowly rounded sides. Early siphuncle suborthochoanitic, later stages cyrtochoanitic, with subspherical, empty segments
References
Foerste, A. F., 1926, Actinosiphonate, trochoceroid and other cephalopods: Denison Univ. Bull., Jour. Sci. Lab., v. 21, p. 285-383, pl. 22-53.