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: | |
Phylum: | |
Family: | |
Subfamily: | |
Genus: | †Collenia |
Type species | |
†C. undosa C.Walcott | |
Species | |
|
Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites.[2]
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.[3]
Fossil record
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
References
- ^ 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
- 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[permanent dead link]
- Index of Generic Names of Fossil Plants, 1820-1950