{{Short description|Extinct genus of cyanobacteria}} {{Automatic taxobox | fossil_range = {{Long fossil range|Proterozoic|Cambrian|ref=<ref name="dk1">{{cite book | title=Prehistoric Life: The Definitive Visual History of Life on Earth | publisher=DK Publishing | author=Palmer, Douglas| year=2009 | location=New York City | isbn=978-0-7566-5573-0 | page=59 | edition=first American|display-authors=etal}}</ref>}} | taxon = Gunflintia | authority = | subdivision_ranks = Species | subdivision = * †'''''Gunflintia barghoornii''''' <small>P.K.Maithy</small> * †'''''Gunflintia magna''''' <small>P.K.Maithy</small> }}
'''''Gunflintia''''' is an extinct genus of cyanobacteria that once existed in what is now Canada and Australia. It was about five micrometres wide, and is known for being one of the first oxygen-producing cyanobacteria, which helped raise oxygen levels in the atmosphere, making Earth more habitable for other oxygen-using organisms. It is also one of the most common fossils in the Gunflint chert.<ref name="dk1" />
==References== {{Reflist}}
{{Taxonbar|from=Q5618738}}
†Gunflintia Category:Prehistoric bacteria Category:Prehistoric life of North America
{{cyanobacteria-stub}} Category:Proterozoic life