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Collenia

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Genus of bacteria

Collenia
Temporal range: 2400–2100 Ma Pha. Proterozoic Archean Had. Siderian - Rhyacian
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
Phylum: Cyanobacteria
Family: Spongiostromata
Subfamily: Stromatolithi
Genus: †Collenia
Walcott, 1914
Type species
†C. undosa C.Walcott
Species
  • †C. frequens
  • †C. symmetrica
  • †C. undosa

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

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

External links

Taxon identifiers
Collenia
Categories:
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