The oldest fossil ascomycetes

  title={The oldest fossil ascomycetes},
  author={Tiffany N. Taylor and Hartmut Ha\ss and Hans Kerp},
Ascomycetes are the largest group of true fungi, and characteristically produce their sexual spores in a sac-like structure called the ascus. They include medicinal agents (such as ergot), plant pathogens (Dutch elm disease is caused by an ascomycete) and yeasts used in fermentation. We have found the oldest ascomycetous fungi with flask-shaped ascocarps in thin-section preparations of the Lower Devonian (400 million years old) Rhynie chert of Aberdeenshire, Scotland. This discovery has… CONTINUE READING

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