Gymnocodium

{{Short description|Extinct genus of algae}}

{{Automatic taxobox

| fossil_range = Permian

| taxon = Gymnocodium

| authority =Pia, 1920

| type_species=Gyroporella bellerophontis

| type_species_authority= Rothpletz, 1894

}}

Gymnocoidum is a genus of calcareous alga known from Permian strata.{{Cite journal | last1 = Elliott | first1 = G. F. | title = The Permian Calcareous Alga Gymnocodium| journal = Micropaleontology | volume = 1 | doi = 10.2307/1484413 | pages = 83–90 | year = 1955 | jstor = 1484413 }} For details of its classification, see Gymnocodiaceae.