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Acanthodus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Distacodontacea
Family:
Acanthodontidae
Formal Genus Name and Reference:
Acanthodus FURNISH, 1938, p. 336
Type Species:
A. uncinatus, OD
Images
(Click to enlarge in a new window)
Fig. 90, 1a. *A. uncinatus, Oncota F., USA (Minn.), diagr. lat. view, X23 (Furnish, 1938).", "Fig. 90, 1b. A. cf. A. uncinatus, Dry Creek Sh., USA (Mont.), lat. view, X52 (Lindström, 1964)."
Synonyms
Geographic Distribution
N.Am.-Asia (Sib.)-Australia
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Diagnosis as for family = Apparatus apparently composed only of nongeniculate coniform lamellar elements with reclined, laterally compressed cusp, portion of posterior margin of cusp serrate; basal cavity shallow.
References
Furnish, W. M., 1938, Conodonts from the Prairie du Chien (Lower Ordovician) beds of the upper Mississippi Valley: J. Paleontol., v. 12, p. 318- 340, 2 text-fig., pl. 41, 42.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Distacodontacea
Family:
Acanthodontidae
Formal Genus Name and Reference:
Acanthodus FURNISH, 1938, p. 336
Type Species:
A. uncinatus, OD
Images
(Click to enlarge in a new window)
Fig. 90, 1a. *A. uncinatus, Oncota F., USA (Minn.), diagr. lat. view, X23 (Furnish, 1938).", "Fig. 90, 1b. A. cf. A. uncinatus, Dry Creek Sh., USA (Mont.), lat. view, X52 (Lindström, 1964)."
Synonyms
Geographic Distribution
N.Am.-Asia (Sib.)-Australia
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Diagnosis as for family = Apparatus apparently composed only of nongeniculate coniform lamellar elements with reclined, laterally compressed cusp, portion of posterior margin of cusp serrate; basal cavity shallow.
References
Furnish, W. M., 1938, Conodonts from the Prairie du Chien (Lower Ordovician) beds of the upper Mississippi Valley: J. Paleontol., v. 12, p. 318- 340, 2 text-fig., pl. 41, 42.