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Mycol Res. 2007 Jun;111(Pt 6):680-4. Epub 2007 Mar 15.

Margaretbarromyces dictyosporus gen. sp. nov.: a permineralized corticolous ascomycete from the Eocene of Vancouver Island, British Columbia.

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1
Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada.

Abstract

A single, permineralized ascoma resembling a pseudothecium assignable to the Pleosporales is described from the Eocene Appian Way fossil locality on Vancouver Island, British Columbia. The ascoma is globose, ostiolate, and erumpent on a fragment of the bark from an unidentified seed plant. Basally arranged asci contain large, multicelled, obovate ascospores within a single cavity or locule enclosed by a two-layered pseudoparenchymatous tissue that ostensibly represents ascostroma. Given this interpretation of the specimen's morphological features, Margaretbarromyces dictyosporus gen. sp. nov. represents the first report of a corticolous pleosporalean ascoma in the fossil record.

PMID:
17601718
DOI:
10.1016/j.mycres.2007.03.010
[Indexed for MEDLINE]
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