期刊
MYCOSCIENCE
卷 52, 期 1, 页码 18-23出版社
MYCOLOGICAL SOC JAPAN
DOI: 10.1007/s10267-010-0065-4
关键词
Autun Basin (France); Basidiomycota; Chert; Fossil fungi; Mississippian
类别
资金
- National Science Foundation [EAR-0949947]
- Alexander von Humboldt-Foundation [V-3.FLF-DEU/1064359]
- Directorate For Geosciences
- Division Of Earth Sciences [0949947] Funding Source: National Science Foundation
A rachis of the fossil filicalean fern Botryopteris antiqua containing abundant septate hyphae with clamp connections is preserved in a late Visean (Mississippian; similar to 330 Ma) chert from Esnost (Autun Basin) in central France. Largely unbranched tubular hyphae pass from cell to cell, but may sometimes produce a branch from a clamp connection. Other clamp-bearing hyphae occur clustered in individual cells or small groups of adjacent host cells. These hyphae may be tubular, catenulate with numerous hyphal swellings, or they may display a combination of both. The Visean hyphae with clamp connections predate Palaeancistrus martinii, the heretofore oldest direct fossil evidence of Basidiomycota, by some 25 Ma.
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