玛格丽特孢霉属新物种：一种来自不列颠哥伦比亚省温哥华岛始新世的矿化皮层子囊菌。

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

作者信息

Mindell Randal A, Stockey Ruth A, Beard Graham, Currah Randolph S

机构信息

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

出版信息

Mycol Res. 2007 Jun;111(Pt 6):680-4. doi: 10.1016/j.mycres.2007.03.010. Epub 2007 Mar 15.

DOI:10.1016/j.mycres.2007.03.010

PMID:17601718

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.

摘要

在不列颠哥伦比亚省温哥华岛始新世的阿庇亚古道化石地点，描述了一个单一的、矿化的子座，类似假囊壳，可归入格孢腔菌目。该子座呈球形，有孔口，从一种不明种子植物的树皮碎片上突出。基部排列的子囊在由两层假薄壁组织包围的单个腔室或子房中含有大型、多细胞、倒卵形的子囊孢子，该假薄壁组织表面上代表子囊座。根据对该标本形态特征的这种解释，dictyosporus Margaretbarromyces gen. sp. nov.是化石记录中首次报道的生于树皮上的格孢腔菌目子座。