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Australodiscus peruvianus, gen. et sp. nov., a marine centric diatom from the Peruvian Eocene

Published online by Cambridge University Press:  01 May 1997

VICTOR PORGUEN  and
MICHAEL J. SULLIVAN
MICHAEL J. SULLIVAN
Affiliation:
Biology Department, P.O. Box GY, Mississippi State University, Mississippi State, MS 39762, USA
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Abstract

A new diatom genus and species, Australodiscus peruvianus Porguen et Sullivan, is described from an Eocene marine deposit from the Paracas Peninsula, Peru. The valve outline is stellate with ocelli and rimoportulae situated singly on alternate points of the star. The rimoportulae are winged and situated on a secondary marginal ridge. Three types of spines are present; two of these are also winged. Our new form appears to be best placed for the present in the centric family Triceratiaceae (Schütt) Lemmermann, being most closely related to the type genus Triceratium Ehrenberg and Grovea A. Schmidt.

Keywords

Australodiscus gen. nov.Australodiscus peruvianus sp. nov.BacillariophytaEocenefamily Triceratiaceaefossil diatomsPerutaxonomy
Type
Research Article
Information
European Journal of Phycology , Volume 32 , Issue 2 , May 1997 , pp. 119 - 124
Copyright
© 1997 British Phycological Society

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