Gymnocoidum is a genus of calcareous alga known from Permian strata.[2] For details of its classification, see Gymnocodiaceae.

References

  1. ^ Pia, Julius (1920). "Die Siphoneae verticillatae vom Karbon bis zur Kreide". Abhandlungen der Zool.-Botan. Gesellschaft in Wie. 11 (2): 34.
  2. ^ Elliott, G. F. (1955). "The Permian Calcareous Alga Gymnocodium". Micropaleontology. 1: 83–90. doi:10.2307/1484413. JSTOR 1484413.


Allikas: https://en.wikipedia.org/wiki/Gymnocodium
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