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Mycological Research News

Date: 31 March 2015

Abstract:

Dawson (1859) described large Palaeozoic fossils from Canada that he called Prototaxites and which later received nomenclaturally incorrect names such as Nematophyton or Nematophycus. Prototaxites was growing among small early land plants such as Psilophyton or Aglaophyton. From the Early to the Mid-Devonian (400–350 Myr ago), Prototaxites was common in all parts of the world, including the Rhynie Cherts of Scotland, and represented the largest terrestrial organisms from these times, reaching heights of 2–9 m and more than 1 m diam. Finally, it became extinct as tracheophytic trees and shrubs emerged. But, 140 years after the first description of Prototaxites, its nature is still a matter of debate: a recent re-analysis hypothesizes that it is a fungus

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