Pennsylvanian phylloid algae interpreted as shallow‐water xenophyophores
作者:
CAROLINE A. MAYBURY,
KEVIN R. EVANS,
期刊:
Lethaia
(WILEY Available online 1994)
卷期:
Volume 27,
issue 1
页码: 29-33
ISSN:0024-1164
年代: 1994
DOI:10.1111/j.1502-3931.1994.tb01551.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Xenophyophores, a group of agglutinated rhizopod protists, occur in nearly all the world's oceans at depths generally in excess of 1OOO m. In certain areas they dominate deep‐sea, megafaunal communities. Their widespread distribution indicates a well‐established adaptive radiation. Only one fossil analogue, however, has been proposed. This isPaleodictyon, a trace fossil that superficially resembles the Recent infaunal xenophyophoreOccultammina profundain morphology. The platy xenophyophore genusPsamminaclosely resembles certain late Palaeozoic fossils from northeastern Kansas that have been referred to as ‘phylloid algae’. Here we compare modern xenophyophore structure with that of the fossil phylloids. By reconstructing the fossils, analysing their thin sections with polarized, blue, and ultraviolet light and subjecting them to Q‐switched laser ablation, we conclude that certain phylloids could represent shallow‐water xenophyophores. ***Phylloid algae, xenophyophores, motphology, reconstruction, laser ablation, Pe
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