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Journal Articles Mycoscience Year : 2011

Oldest fossil basidiomycete clamp connections

Abstract

A rachis of the fossil filicalean fern Botryopteris antiqua containing abundant septate hyphae with clamp connections is preserved in a late Visean (Mississippian; ~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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Evolution

Dates and versions

halsde-00611469 , version 1 (26-07-2011)

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Michael Krings, Nora Dotzler, Jean Galtier, Thomas N. Taylor. Oldest fossil basidiomycete clamp connections. Mycoscience, 2011, 52 (1), pp.18-23. ⟨10.1007/s10267-010-0065-4⟩. ⟨halsde-00611469⟩
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