Collenia

Collenia
Temporal range: Siderian–Rhyacian 2400–2100 Ma
Section of Collenia undosa stromatolite from 2110 million year old banded iron formation, Biwabik
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
  • †C. frequens
  • †C. symmetrica
  • †C. undosa

Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites.[2]

Description

Life restoration

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

  1. ^ Smithsonian miscellaneous collections Walcott 1914 si.edu
  2. ^ 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.
  3. ^ Carroll Lane Fenton, Pat Vickers Rich, Mildred Adams Fenton, Thomas H. V. Rich The Fossil Book: A Record of Prehistoric Life

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