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Streptognathodus isolatus new species (Conodonta): Proposed index for the Carboniferous-Permian boundary

Published online by Cambridge University Press:  20 May 2016

Valery V. Chernykh ,
Scott M. Ritter  and
Bruce R. Wardlaw
Valery V. Chernykh
Affiliation:
Uralian Branch, Russian Academy of Science, Pochtovyi, Per. 7, 620219
Scott M. Ritter
Affiliation:
Ekaterinburg, Russia, Department of Geology, Brigham Young University, Provo, Utah 84602
Bruce R. Wardlaw
Affiliation:
U.S. Geological Survey, MS 970 National Center, Reston, Virginia 22092
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Extract

Davydov et al. (1995) recently proposed the Aidaralash Creek section in northern Kazakhstan (Figures 2 and 3) as the Global Stratotype Section and Point (GSSP) for the base of the Permian System. The proposed boundary is the level in an evolutionary sequence where Streptognathodus wabaunsensis Gunnell gives rise to a descendent with an isolated node field on the inside of the upper platform surface. This morphotype constitutes a new and distinct species for which we propose the name Streptognathodus isolatus new species.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 71 , Issue 1 , January 1997 , pp. 162 - 164
Copyright
Copyright © The Paleontological Society 

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References

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