Margaretbarromyces dictyosporus gen. sp. nov.: a permineralized corticolous ascomycete from the Eocene of Vancouver Island, British Columbia |
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Authors: | Randal A Mindell Ruth A Stockey Graham Beard Randolph S Currah |
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Institution: | aDepartment of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada;bVancouver Island Paleontology Museum, Qualicum Beach, British Columbia, V9K 1K7 Canada |
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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. |
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Keywords: | Ascomycota Fossil Fungi Loculoascomycetes Palaeomycology Pleosporales |
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