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Distomodus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Distomodontidae
Formal Genus Name and Reference:
Distomodus Branson & BRANSON, 1947, p. 553
Type Species:
D. kentuckyensis, OD
Images
(Click to enlarge in a new window)
Fig. 84, 1. D. staurognathoides (Walliser), up.Llandov.-low.Wenlock. (Pterospathodus amorphognathoides Z., Clarita F.), USA (Okla.), 1 a, b, Pb element, oblique ant.lat. and post. views, 1 c, M element, lat. view, 1d, Sc element, lat. view, 1e, f, Pa element, upper and lower views, 1 g, Sa element, post. view, 1 h, Sb element, post. view, × 27 (Barrick & Klapper, 1976).
Synonyms
Hadrognathus; Exochognathus
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Sil. (Llandov.)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil. (low.Wenlock)
Ending International Stage:
Sheinwoodian
Fraction Up In Ending Stage:
100
Ending Date:
430.62
Description
Pa element either with 4 processes joined in cross or 5 to 6 radiating processes, Pb element with anterior process on expanded base, or 3 to 4 processes in elements with platform. [Reconstruction: COOPER, 1974b; BARRICK & KLAPPER, 1976.]
References
Branson, E. B., & Branson, C. C., 1947, Lower Silurian conodonts from Kentucky: J. Paleontol., v. 21, p. 549-556, 1 text-fig., pl. 81, 82.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Prioniodontacea
Family:
Distomodontidae
Formal Genus Name and Reference:
Distomodus Branson & BRANSON, 1947, p. 553
Type Species:
D. kentuckyensis, OD
Images
(Click to enlarge in a new window)
Fig. 84, 1. D. staurognathoides (Walliser), up.Llandov.-low.Wenlock. (Pterospathodus amorphognathoides Z., Clarita F.), USA (Okla.), 1 a, b, Pb element, oblique ant.lat. and post. views, 1 c, M element, lat. view, 1d, Sc element, lat. view, 1e, f, Pa element, upper and lower views, 1 g, Sa element, post. view, 1 h, Sb element, post. view, × 27 (Barrick & Klapper, 1976).
Synonyms
Hadrognathus; Exochognathus
Geographic Distribution
Eu.-Asia-N.Am.
Age Range
Beginning Stage in Treatise Usage:
Sil. (Llandov.)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil. (low.Wenlock)
Ending International Stage:
Sheinwoodian
Fraction Up In Ending Stage:
100
Ending Date:
430.62
Description
Pa element either with 4 processes joined in cross or 5 to 6 radiating processes, Pb element with anterior process on expanded base, or 3 to 4 processes in elements with platform. [Reconstruction: COOPER, 1974b; BARRICK & KLAPPER, 1976.]
References
Branson, E. B., & Branson, C. C., 1947, Lower Silurian conodonts from Kentucky: J. Paleontol., v. 21, p. 549-556, 1 text-fig., pl. 81, 82.