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Streptognathodus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Idiognathodontidae
Formal Genus Name and Reference:
Streptognathodus Stauffer & PLUMMER, 1932, p. 47
Type Species:
S. excellus, OD
Images
(Click to enlarge in a new window)
Fig. 109, 4. S. antiquis (Stauffer & Plummer), U. Penn., USA (Kans.), Pa element, upper view, X52 (von Bitter, 1972)
Synonyms
Scottognathus
Geographic Distribution
N. Am.-Eu.-Afr.-Australia-N. Z.
Age Range
Beginning Stage in Treatise Usage:
L.Penn.L. Perm.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
L.Penn.L. Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Apparatus either sexi- or septimembrate, Pa element scaphate, Pb angulate, M dolabrate, Sa alate, Sb bipennate, Sc bipennate, Pa element with long free blade, platform with median trough and transverse ridges. [Median trough distinguishes Streptognathodus from Idiognathodus.]
References
Stauffer, C. R., , & Plummer, H. J., 1932, Texas Pennsylvanian conodonts and their stratigraphic relations: Univ. Texas Bull. 3201, p. 13-50, pl. 1-4.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Idiognathodontidae
Formal Genus Name and Reference:
Streptognathodus Stauffer & PLUMMER, 1932, p. 47
Type Species:
S. excellus, OD
Images
(Click to enlarge in a new window)
Fig. 109, 4. S. antiquis (Stauffer & Plummer), U. Penn., USA (Kans.), Pa element, upper view, X52 (von Bitter, 1972)
Synonyms
Scottognathus
Geographic Distribution
N. Am.-Eu.-Afr.-Australia-N. Z.
Age Range
Beginning Stage in Treatise Usage:
L.Penn.L. Perm.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
L.Penn.L. Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Apparatus either sexi- or septimembrate, Pa element scaphate, Pb angulate, M dolabrate, Sa alate, Sb bipennate, Sc bipennate, Pa element with long free blade, platform with median trough and transverse ridges. [Median trough distinguishes Streptognathodus from Idiognathodus.]
References
Stauffer, C. R., , & Plummer, H. J., 1932, Texas Pennsylvanian conodonts and their stratigraphic relations: Univ. Texas Bull. 3201, p. 13-50, pl. 1-4.