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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 6, issue 1
J. Micropalaeontol., 6, 8, 1987
https://doi.org/10.1144/jm.6.1.65
© Author(s) 1987. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 6, 8, 1987
https://doi.org/10.1144/jm.6.1.65
© Author(s) 1987. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 May 1987

01 May 1987

Cabochonicus, a new genus for species of gemmate megaspores previously referred to Verrutriletes

D. J. Batten1 and D. J. P. Ferguson2 D. J. Batten and D. J. P. Ferguson
  • 1Department of Geology and Mineralogy, Marischal College, University of Aberdeen, Aberdeen AB9 1AS
  • 2Nuffield Department of Pathology, John Radcliffe Hospital, University of Oxford, Headington, Oxford OX3 9DU

Abstract. Several species of Mesozoic megaspores that are sculptured with globular, often gemmate elements are sufficiently distinct from most verrucate forms to warrant their inclusion in a genus other than Verrutriletes. Cabochonicus is erected to accommodate them with C. (al. Verrutriletes) carbunculus as the type species. The form of the gemmae, which have a glossy appearance, has been the subject of past debate with one interpretation being that they are the manifestation of fungal attack rather than sculpture. Evidence from ultrastructural studies suggests, however, that they are exinal excrescences. The spores are assumed to be the products of heterosporous lycopods and the structure of the wall layers may indicate selaginellalean affinities. The plants are more likely to have been terrestrial than aquatic or semi-aquatic.

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