Permocalculus

Permocalculus; Temporal range: Permian–Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
(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]

References

Guiry, M.D.; Guiry, G.M. (2008). "Permocalculus". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-06-24.

Dixon, Peter Stanley (1973). Biology of the Rhodophyta. ISBN 0-05-002485-X.
Elliott, G. F. (1955). "The Permian Calcareous Alga Gymnocodium". Micropaleontology. 1 (1): 83–90. doi:10.2307/1484413. JSTOR 1484413.

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[1] Dixon, Peter Stanley (1973). Biology of the Rhodophyta. ISBN 0-05-002485-X.

[Elliott1955-2] Elliott, G. F. (1955). "The Permian Calcareous Alga Gymnocodium". Micropaleontology. 1 (1): 83–90. doi:10.2307/1484413. JSTOR 1484413.