The end-Ordovician was an enigmatic interval in the Phanerozoic, known for massive glaciation potentially at elevated CO 2 levels, biogeochemical cycle disruptions recorded as large isotope anomalies ...

We all know that the dinosaurs died in a mass extinction. But did you know that there were other mass extinctions? There are five most significant mass extinctions, known as the “big five,” where at ...

Eurypterids (Arthropoda: Chelicerata), normally known as sea scorpions, are an important extinct group of Paleozoic chelicerate arthropods. Researchers led by Profs. ZHANG Haichun, WANG Bo, ZHANG ...

New research reveals more information about the first and oldest of the 'big five' extinctions. Around 85% of marine species, most of which lived in shallow oceans near continents, disappeared during ...

Stratigraphic framework and time slices / Barry D. Webby ... [et al.] -- Calibration of the Ordovician timescale / Peter M. Sadler, Roger A. Cooper -- Measures of diversity / Roger A. Cooper -- Major ...

Since the beginning of time, Earth has created life and then wiped out most of it in catastrophic, ultra-destructive moments.

Menu Local Geology History, Resources, and Facilities Geologic History of Southwestern Ohio The same forces that cause volcanoes, mountains, and ocean basins also cause climatic changes that have ...