HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by RASSER, M. W. Search for Related Content GeoRef GeoRef Citation

Paleoecology and Taphonomy of Polystrata alba (Red Alga) from the Late Eocene Alpine Foreland: A New Tool for the Reconstruction of Sedimentary Environments

¹ Institute of Paleontology and Geology, University of Graz, Heinrichstrasse 26, A-8010 Graz, Austria

ABSTRACT

Polystrata alba (Pfender) Denizot, 1968 (Peyssonneliaceae, Rhodophyta) in Late Eocene algal limestones of the Upper Austrian Alpine Foreland Basin forms (1) horizontal crusts, (2) subspherical and irregular, unilayered rhodoliths with sediment-filled inner cavities, and (3) rhodoliths. Most of the described growth forms are unique and previously have not been described from fossil material. Comparisons with present-day analogues, however, reveal that most growth features can be explained by the interplay between sediment input and bottom stability. This actualistic approach allows the reconstruction of paleoecologic and taphonomic processes that influenced both growth forms of P. alba and the resulting sedimentary facies. The model described in this study provides a useful tool for the reconstruction of paleoenvironmental conditions.