Cyanobacteria

Cyanobacteria /saɪˌænoʊbækˈtɪəriə/, forby kent as Cyanophyta, is a phylum o bacteria that obtain thair energy throu photosynthesis.^[4] The name "cyanobacteria" comes frae the colour o the bacteria (Greek: κυανός (kyanós) = blue). Altho eften cried blue-green algae, that name is a misnomer as cyanobacteria are prokaryotic an algae are eukaryotic.

Cyanobacteria Temporal range: 2700–0Ma Had'n Archean Proterozoic Pha.
Microscope eemage o Cylindrosperum, a genus o Cyanobacteria
Scientific classification
Domain:	Bacteria
(unranked):	Terrabacteria
(unranked):	Cyanobacteria-Melainabacteria group
Phylum:	Cyanobacteria Stanier, 1973
Cless:	Cyanophyceae
Orders[1]
As o 2014[update] the taxonomy wis unner reveesion[2][3] Chroococcales Chroococcidiopsidales Gloeobacterales Nostocales Oscillatoriales Pleurocapsales Spirulinales Synechococcales Incertae sedis †Gunflintia †Ozarkcollenia
Synonyms
Myxophyceae Wallroth, 1833 Phycochromaceae Rabenhorst, 1865 Cyanophyceae Sachs, 1874 Schizophyceae Cohn, 1879 Cyanophyta Steinecke, 1931 Oxyphotobacteria Gibbons & Murray, 1978

Bi producin oxygen as a gas as a bi-product o photosynthesis, cyanobacteria are thoucht tae hae convertit the early reducin atmosphere intae an oxidizing ane, which dramatically changed the composeetion o life furms on Yird bi stimulatin biodiversity an leadin tae the near-extinction o oxygen-intolerant organisms. Accordin tae endosymbiotic theory, the chloroplasts foond in plants an eukaryotic algae evolved frae cyanobacterial ancestors via endosymbiosis.