10 AM to 11AM SL time
There have been at least 5 mass extinctions in the geologic past and some say there was a sixth. Multiple theories from volcanism, plate tectonics, biotic interactions, and changes to ocean chemistry have been proposed for these extinction events. Local field studies in Virginia has shed light on the Late Ordovician extinction when 86% of animals in the ocean perished. These data will be given in the presentation. Studies like this one are important in answering the question will there be another mass extinction in the future?
by Dr. William F. Schmachtenberg (Dae Miami SL)
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