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Volume 12, issue 1 | Copyright
J. Micropalaeontol., 12, 47-66, 1993
https://doi.org/10.1144/jm.12.1.47
© Author(s) 1993. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 Aug 1993

01 Aug 1993

A land plant microfossil assemblage of Mid Silurian age from the Stonehaven Group, Scotland

Charles Wellman Charles Wellman
  • *Department of Palaeontology, The Natural History Museum Cromwell Road, London SW7 5BD, UK
  • Department of Geology, University of Wales, College of Cardiff, Cardiff, CF1 3YE, UK

Abstract. Land plant microfossils recovered from the Stonehaven Group near Stonehaven, Scotland comprise sporomorphs (cryptospores and miospores) and plant fragments (tubular structures and cuticle-like sheets). A new species of hilate cryptospore, Hispanaediscus lamontii sp. nov., is proposed. The sporomorph assemblage indicates a late Wenlock, or possibly earliest Ludlow age and is interpreted as accumulating in a continental environment. The new age constraint suggests that the Stonehaven Group is not in continuous succession with overlying “Lower Old Red Sandstone” deposits and should be treated separately. The assemblage provides important information regarding the composition of Mid Silurian continental plant microfossil assemblages and indicates that the vegetation comprised few taxa and was cosmopolitan.

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