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Discoaster praebifax n. sp.: a possible ancestor of Discoaster bifax Bukry (Coccolithophoridae)

Published online by Cambridge University Press:  19 May 2016

Wuchang Wei  and
Sherwood W. Wise Jr.
Wuchang Wei
Affiliation:
Department of Geology, Florida State University, Tallahassee 32306
Sherwood W. Wise Jr.
Affiliation:
Department of Geology, Florida State University, Tallahassee 32306
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Abstract

An investigation of middle Eocene calcareous nannofossils from Deep Sea Drilling Project Sites 162 and 361 has revealed a new species, Discoaster praebifax, and prompted the emendation of Discoaster bifax Bukry. Based on their morphologic similarities and stratigraphic relationship, D. praebifax is suggested to be the ancestor of D. bifax. Because the new species closely resembles D. bifax, the use of the latter as an index species for Subzone CP14a should be cautioned. The first occurrence of D. praebifax is, however, a potentially useful datum in Zone CP12.

Type
Research Article
Information
Journal of Paleontology , Volume 63 , Issue 1 , January 1989 , pp. 10 - 14
Copyright
Copyright © The Paleontological Society 

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