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Early Carboniferous Epoch

geochronology
Also known as: Dinantian Subsystem

Quick Summary

The Early Carboniferous Epoch, also known as the Mississippian Subperiod, spanned from approximately 358.9 to 323.2 million years ago. This geological interval is characterized by significant shallow-water limestone deposits, particularly in the Northern Hemisphere.123

During this time, marine life thrived, with abundant crinoids (a type of echinoderm), bryozoans, and brachiopods contributing to the limestone formations. The Mississippian is also recognized for the near extinction of armored fishes that were prevalent in the preceding Devonian Period. While the Northern Hemisphere experienced these marine conditions, the Southern Hemisphere underwent widespread continental glaciations.31

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