Family Spongiostromata Rank Genus | Phylum Cyanophyta Subfamily Stromatolithi | |
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Similar Halysites, Nemiana, Xystridura, Phycodes, Cyclomedusa | ||
Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites.
Contents
Description
Collenia are stromatolites made up of convex layers flattened in the center, forming columnar colonies. The microorganisms involved were likely photosynthetic bacteria expiring oxygen.
Fossil record
Collenia stromatolites were very common in the late Precambrian, about 2.2 to 2.4 billion yearsago.
References
Collenia Wikipedia(Text) CC BY-SA