Gymnocodiaceae

{{Short description|Extinct family of algae}}

{{Automatic taxobox

| fossil_range = {{fossil range|Permian|Cretaceous}}

| taxon = Gymnocodiaceae

| authority = G. F. Elliott, 1955

| subdivision_ranks = Genera

| subdivision =

}}

This family of alga is known from Permian to Cretaceous strata.{{cite book|last1=Dixon|first1=Peter S.|title=Biology of the Rhodophyta|date=1977|publisher=Koeltz|location=Koenigstein|isbn=0-05-002485-X|edition=Reprint.|url=https://books.google.com/books?id=JHomAQAAMAAJ&q|access-date=22 October 2016}} It has been aligned with the chlorophytes and rhodophytes;{{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 | issue = 1 | jstor = 1484413 }} whilst the latter is the most widely held opinion, some authors still consider a green algal affinity possible.{{Cite journal

|journal = Bulletin: Classe des Sciences Mathématiques et Natturalles - Sciences Natturalles

|volume = 128

|issue = 42

|year = 2004

|pages = 237–257

|title = Permocalculus nikolapantici n. sp. (Udoteaceae ?) from the Upper Turonian of the NW Serbia

|author = Radoičić Rajka

|url = http://scindeks.nb.rs/article.aspx?artid=0352-57400442237R

|url-status = dead

|archive-url = https://web.archive.org/web/20110826205259/http://scindeks.nb.rs/article.aspx?artid=0352-57400442237R

|archive-date = 2011-08-26

}}