Collenia is genus of fossil cyanobacteria that form a particular type of stromatolites. Collenia are stromatolites made up of convex layers flattened in...

years old. There are also microbial fossils of a cyanobacterium known as collenia in the rock; these formed 2000 million years ago. The caves were used for...

algae). One genus of stromatolite very common in the geologic record is Collenia. The earliest stromatolite of confirmed microbial origin dates to 2.724 billion...

stromatolite-making cyanobacteria from Missouri, United States. It was related to Collenia. Ozarkcollenia may have formed in a lake of volcanic origin. The fossils...

algae). One genus of stromatolite very common in the geologic record is Collenia. The connection between grazer and stromatolite abundance is well documented...

Collenia Species Time period Location †C. frequens Late Proterozoic Australia United States †C. symmetrica †C. undosa...

Lynx Group include fossil trilobites and some contain the stromatolite Collenia. The Lynx Group is composed alternating zones of carbonate rocks, most...

The base of this limestone, where present, is consistently formed of Collenia stromatolites. The stromatolite base of this limestone can overlie orange...

stromatolites are uncommon. Of these forms, only Collenia undosa Walcott, Collenia symmetrica Fenton & Fenton, and Collenia frequens Walcott, have been reported from...