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First Oligocene occurrence of the irregular echinoid Macropneustes mortoni (Conrad)

Published online by Cambridge University Press:  14 July 2015

James A. Heller  and
Jonathan R. Bryan
James A. Heller
Affiliation:
Department of Geological Sciences, University of Tennessee, Knoxville 37996
Jonathan R. Bryan
Affiliation:
Department of Geological Sciences, University of Tennessee, Knoxville 37996
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Extract

A nearly complete test and several test fragments of the irregular echinoid species Macropneustes mortoni (Conrad) were recently discovered in Lower Oligocene (Vicksburgian) strata of southern Alabama. To date, M. mortoni has only been reported from Upper Eocene (Jacksonian) sediments of Alabama, Georgia, and Florida (Cooke, 1959; Toulmin, 1977; Carter, 1987). This is one of the very few species of the diverse Eocene echinoid fauna of this region to survive the terminal Eocene extinctions.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 66 , Issue 2 , March 1992 , pp. 345 - 346
Copyright
Copyright © The Paleontological Society 

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References

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