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Idiognathodus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Idiognathodontidae
Formal Genus Name and Reference:
Idiognathodus GUNNELL, 1931, p. 249
Type Species:
I. claviformis, OD
Images
(Click to enlarge in a new window)
Fig. 109, 7. I. delicatus Gunnell, L.Penn., USA (Ill.), Pa element, upper view, X28 (Merrill & King, 1971), for a reconstruction of assemblage, see Fig. 53, 3.
Synonyms
Scottognathus
Geographic Distribution
L.Penn.-L.Perm., N.Am., U.Carb. (Namur.Westphal.), Eu.-Afr.-Asia M.-Australia-N.Z.-S.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Penn.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Apparatus sexi- or septimembrate, Pa element scaphate, Pb angulate, M dolabrate, Sa alate, Sb bipennate, Sc bipennate. Pa element diagnostic, long free blade at least half length of element, carina partly or completely suppressed and transverse ridges strong, especially in posterior portion of upper surface.
References
Gunnell, F. H., 1931, Conodonts from the Fort Scott limestone of Missouri: J. Palcontol., v. 5, p. 244-252, pl. 29.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Idiognathodontidae
Formal Genus Name and Reference:
Idiognathodus GUNNELL, 1931, p. 249
Type Species:
I. claviformis, OD
Images
(Click to enlarge in a new window)
Fig. 109, 7. I. delicatus Gunnell, L.Penn., USA (Ill.), Pa element, upper view, X28 (Merrill & King, 1971), for a reconstruction of assemblage, see Fig. 53, 3.
Synonyms
Scottognathus
Geographic Distribution
L.Penn.-L.Perm., N.Am., U.Carb. (Namur.Westphal.), Eu.-Afr.-Asia M.-Australia-N.Z.-S.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Penn.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Apparatus sexi- or septimembrate, Pa element scaphate, Pb angulate, M dolabrate, Sa alate, Sb bipennate, Sc bipennate. Pa element diagnostic, long free blade at least half length of element, carina partly or completely suppressed and transverse ridges strong, especially in posterior portion of upper surface.
References
Gunnell, F. H., 1931, Conodonts from the Fort Scott limestone of Missouri: J. Palcontol., v. 5, p. 244-252, pl. 29.