Collenia
| Collenia | |
|---|---|
 | |
| Section of Collenia undosa stromatolite from 2110 million year old banded iron formation, Biwabik | |
 | |
| Collenia undosa stromatolite from Precambrian of United States | |
Scientific 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]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]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]References
[edit]- ↑ Smithsonian miscellaneous collections Walcott 1914 si.edu
- ↑ Rich, Thomas H. V.; Fenton, Carroll Lane; Fenton, Mildred Adams; Rich, Pat Vickers (1996). The fossil book: a record of prehistoric life. New York: Dover Publications. ISBN 0-486-29371-8.
- ↑ Carroll Lane Fenton, Pat Vickers Rich, Mildred Adams Fenton, Thomas H. V. Rich The Fossil Book: A Record of Prehistoric Life
External links
[edit]- 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