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Pelekysgnathus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Icriodontidae
Formal Genus Name and Reference:
Pelekysgnathus THOMAS, 1949, p. 424
Type Species:
P. inclinata, OD
Images
(Click to enlarge in a new window)
Fig. 74, 2. *P. inclinatus, U.Dev. (Scaphignathus subserratus-Pelekysgnathus inclinatus Fauna, Maple Mill Sh.), USA (Iowa), 2a, Pa element, lat. view, 2 b, P b element, lat. view, 2 c, S element, lat. view, X37 (2a, Klapper, n, 2b, c, Klapper & Philip, 1972).
Synonyms
Drepanodina
Geographic Distribution
Eu.-N.Am.-Australia
Age Range
Beginning Stage in Treatise Usage:
Sil. (Pridol.)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
U.Dev. (Famenn.)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Pa element like that of Icriodus but main process characteristically with only a single longitudinal row of nodes, Pb element nongeniculate, laterally compressed coniform element with sharp anterior and posterior keels. S elements varying from smooth to costate, unkeeled simple cones of circular to elliptical cross section. [Reconstruction: KLAPPER & PHILIP, 1972.]
References
Thomas, L. A., 1949, Devonian-Mississippian formations of southeast lowa: Geol. Soc. Am. Bull., v. 60, p. 403-438, pl. 1-4.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Icriodontidae
Formal Genus Name and Reference:
Pelekysgnathus THOMAS, 1949, p. 424
Type Species:
P. inclinata, OD
Images
(Click to enlarge in a new window)
Fig. 74, 2. *P. inclinatus, U.Dev. (Scaphignathus subserratus-Pelekysgnathus inclinatus Fauna, Maple Mill Sh.), USA (Iowa), 2a, Pa element, lat. view, 2 b, P b element, lat. view, 2 c, S element, lat. view, X37 (2a, Klapper, n, 2b, c, Klapper & Philip, 1972).
Synonyms
Drepanodina
Geographic Distribution
Eu.-N.Am.-Australia
Age Range
Beginning Stage in Treatise Usage:
Sil. (Pridol.)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
U.Dev. (Famenn.)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Pa element like that of Icriodus but main process characteristically with only a single longitudinal row of nodes, Pb element nongeniculate, laterally compressed coniform element with sharp anterior and posterior keels. S elements varying from smooth to costate, unkeeled simple cones of circular to elliptical cross section. [Reconstruction: KLAPPER & PHILIP, 1972.]
References
Thomas, L. A., 1949, Devonian-Mississippian formations of southeast lowa: Geol. Soc. Am. Bull., v. 60, p. 403-438, pl. 1-4.