Journal cover Journal topic
Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.179 IF 1.179
  • IF 5-year value: 1.107 IF 5-year
    1.107
  • CiteScore value: 2.6 CiteScore
    2.6
  • SNIP value: 0.601 SNIP 0.601
  • IPP value: 1.23 IPP 1.23
  • SJR value: 0.491 SJR 0.491
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 27 Scimago H
    index 27
  • h5-index value: 10 h5-index 10
Volume 9, issue 2
J. Micropalaeontol., 9, 239–244, 1991
https://doi.org/10.1144/jm.9.2.239
© Author(s) 1991. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 9, 239–244, 1991
https://doi.org/10.1144/jm.9.2.239
© Author(s) 1991. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 Mar 1991

01 Mar 1991

Permocalculus iagifuensis sp. nov.: A new Miocene gymnocodiacean alga from Papua New Guinea

M. D. Simmons and M. J. Johnston M. D. Simmons and M. J. Johnston
  • Exploration Technology Branch, BP Research Centre, Chertsey Road, Sunbury-on-Thames, Middlesex, TW16 7LN, United Kingdom

Abstract. Permocalculus iagifuensis, a new species of gymnocodiacean alga is described from the Miocene of the Darai Limestone Formation of Papua New Guinea. The discovery of this species greatly extends the range of gymnocodiacean algae, which previously had only been confidently recorded from the Permian and Cretaceous. It also suggests an evolutionary link to the Recent genus Galaxaura (order Nemalionales; family Chaetangiaceae), which is the only extant alga bearing a similarity to the Gymnocodiaceae. Alternatively, a closer relationship to the green udoteacean algae (e.g. Halimeda) is considered. The microfauna and other microflora associated with this new species are briefly described.

Publications Copernicus
Download
Citation