Collenia

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Collenia
Temporal range: Siderian–Rhyacian 2400–2100 Ma
Collenia undosa Minnesota.jpg
Section of Collenia undosa stromatolite from 2110 million year old banded iron formation, Biwabik
Stromatolithi - Collenia nudosa.JPG
Collenia undosa stromatolite from Precambrian of United States
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Bacteria
Kingdom: Bacillati
Phylum: Cyanobacteriota
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]

Contents

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

  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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