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Distribution and possible paleoecological significance of Annectina viriosa, a new species of agglutinated foraminifera from nonmarine salt ponds in Manitoba

Published online by Cambridge University Press:  14 July 2015

R. Timothy Patterson  and
W. Brian McKillop
R. Timothy Patterson
Affiliation:
Ottawa–Carleton Geoscience Center and Department of Earth Sciences, Carleton University, Ottawa, Ontario K1S 5B6
W. Brian McKillop
Affiliation:
Canada and Manitoba Museum of Man and Nature, 190 Rupert Avenue, Winnipeg, Manitoba R3B ON2, Canada
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Abstract

Annectina viriosa, a new species of Ammodiscidae (Foraminiferida), is described from Recent brackish ponds on a salt flat adjacent to Lake Winnipegosis, Manitoba. Colonization of the ponds was probably by avian transport. The distinct morphotype is either the result of an allopatric speciation event within the last 5,000 years or it is a previously undescribed species of shallow-water Annectina from nearby Hudson Bay. It is also possible that recovered specimens are previously unrecognized ecophenotypic variants of some known species produced by unknown hostile environmental factors within the pond ecosystem. The latter hypothesis is difficult to test without extensive biological culturing. The large number of phenotypically stable specimens living in these ponds warrants recognition of these populations as a distinct taxon.

Type
Research Article
Information
Journal of Paleontology , Volume 65 , Issue 1 , January 1991 , pp. 33 - 37
Copyright
Copyright © The Journal of Paleontology 

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