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Stromatolites (Biotic Group)

Component: Biotic

Unique Identifier: 547

Biotic Setting Benthic/Attached Biota
Biotic Class Microbial Communities
Biotic Subclass Structure Forming Microbes
Biotic Group Stromatolites
Biotic Community Stromatolite Mound Communities

Definition Areas dominated by large, mound-like formations built up in shallow marine areas by secretions of cyanobacteria, which further entrap minerals and sediment. They form Earth's oldest fossils and originated over 3 billion years ago.