The Neville Public Museum

Geology Club Monthly Meeting" Ecologic Restructuring Following Earth's Largest Extinction

20-Sep-2017 Ecologic Restructuring Following Earth's Largest Mass Extinction by Dr. Margaret
Fraiser, UW - Milwaukee
7:00 p.m.

The Earth experienced the largest known drop in biodiversity at the end of the Permian Period, with the
elimination of ~78% of marine invertebrate genera. The precise cause of this mass extinction remains
controversial, but evidence is accumulating for strong global climatic warming, possibly by as much as
15⁰C, and for high pCO2 and low pO2 in the atmosphere and oceans. Evidence suggests that marine
ecological devastation following the end-Permian mass extinction was protracted and may have lasted 5
million years. I will present some fossil data on the restructuring of marine life following the Permo-
Triassic extinction.

Museum Hours

Sun: Noon-5pm
Mon: Closed
Tue: Noon-8pm
Wed: 9am-5pm
Thu: 9am-5pm
Fri: 9am-5pm
Sat: 9am-5pm

First Wednesday of every month: 9am-8pm*

*With free admission for Brown County residents from 5pm-8pm with proof of residency