Gymnocodium

Gymnocodium Temporal range: Permian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Clade:	Archaeplastida
Division:	Rhodophyta
Class:	incertae sedis
Family:	†Gymnocodiaceae
Genus:	†Gymnocodium Pia, 1920[1]
Type species
Gyroporella bellerophontis Rothpletz, 1894

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.