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Temporal range: Permian–Cretaceous
Scientific classification e
(unranked): Archaeplastida
Division: Rhodophyta
Class: incertae sedis
Family: Gymnocodiaceae
Genus: Permocalculus
G. F. Elliott, 1955

Permocalculus is a genus of red algae known from Permian to Cretaceous strata.[1] Closely aligned to Gymnocodium, it is placed in the Gymnocodiaceae.[2]


  • Guiry, M.D.; Guiry, G.M. (2008). "Permocalculus". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-06-24. 
  1. ^ . ISBN 0-05-002485-X.  Missing or empty |title= (help)
  2. ^ Elliott, G. F. (1955). "The Permian Calcareous Alga Gymnocodium". Micropaleontology. 1: 83–90. doi:10.2307/1484413.