• Source: Collenia

Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites.




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 Paleoproterozoic era during the Siderian and Rhyacian periods, about 2.2 to 2.4 billion years ago.




See also


List of fossil stromatolites




References






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
Index of Generic Names of Fossil Plants, 1820-1950

Kata Kunci Pencarian:

• Collenia
• Sudwala Caves
• Fossil
• Ozarkcollenia
• Stromatolite
• Lynx Formation
• List of fossil stromatolite taxa
• Americus Limestone
• Bass Formation