Collenia
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| Collenia | |
|---|---|
| |
| Section of Collenia undosa stromatolite from 2110 million year old banded iron formation, Biwabik | |
| File:Stromatolithi - Collenia nudosa.JPG | |
| Collenia undosa stromatolite from Precambrian of United States | |
| Scientific classification Edit this classification | |
| Domain: | Bacteria |
| Kingdom: | Bacillati |
| Phylum: | Cyanobacteriota |
| Class: | incertae sedis |
| Genus: | †Collenia Walcott 1914[1] |
| Type species | |
| †Collenia undosa | |
| Species | |
| |
Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites.[2]
Description
[edit | edit source]Collenia are stromatolites made up of convex layers flattened in the center, forming columnar colonies. The microorganisms involved were likely photosynthetic bacteria expiring oxygen.[3]
Fossil record
[edit | edit source]Collenia stromatolites were very common in the Paleoproterozoic era during the Siderian and Rhyacian periods, about 2.2 to 2.4 billion years ago.
See also
[edit | edit source]References
[edit | edit source]- ^ Smithsonian miscellaneous collections Walcott 1914 si.edu
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Carroll Lane Fenton,Pat Vickers Rich,Mildred Adams Fenton,Thomas H. V. Rich The Fossil Book: A Record of Prehistoric Life
External links
[edit | edit source]- Geological Survey Professional Paper, Volume 669
- Spencer G. Lucas,Justin A. Spielmann,Patricia M. Hester,Jason P. Kenworthy,Vincent L. Santucci Americas Antiquities: 100 Years of Managing Fossils on Federal Lands
- Stromatolites - Precambrian: Archaean and Proterozoic Stromatolite
- Index of Generic Names of Fossil Plants, 1820-1950
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