Pilbaria
''Pilbaria'' is a genus of fossil stromatolite-forming cyanobacteria from the Paleoproterozoic era 2.3 to 1.7 billion years ago. It is named after the Pilbara region of Western Australia where the type specimen was found. Description The type species, ''Pilbaria perplexa'' is characterised by long, mostly straight, subparallel and mostly smooth columns with proportionately small transversely elongate niches with projections. Near the bases of beds, branching varies from parallel to markedly divergent, but above that level, it is α-β-parallel or slightly divergent. Laminae are predominantly steeply convex and form a patchy wall. ''Pilbaria'' is similar to ''Inzeria'' and ''Nordia'' in that it has well-developed niches and projections. Distribution and age Fossils of ''P. perplexa'', the type species, have been found in the Wyloo Group of the Pilbara region in Western Australia, aged 1.7 to 2 billion years old. It has also been found in the Epworth Group of the Coronation an ...
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List Of Fossil Stromatolites
This is a list of all extinct cyanobacteria genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ... that formed stromatolites. References {{reflist Proterozoic life Prehistoric bacteria Cyanobacteria genera ...
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