June General Meeting:

 

 

The Polar Gigantic Trilobites Of Portugal

By Tom Rich

 

 

I have been studying trilobites as they relate to the global extinction event at the end of the Ordovician. This is a unique event in that this extinction took less than 1.4 million years, the shortest in history, but second most severe, and for that brief period an ice cap covered Gondwana (Africa) on the South Pole. At that time, Avalonia (Boston) and Iberia (Portugal and Spain) were islands off the continental coast of Gondwana. In these polar waters off the coast of these islands, some of the largest trilobites grew while others remained unchanged. Why?

  Tom

 

 

 

Pebble Pups:

 

 

This month Tom Rich will be presenting his talk on the polar gigantic trilobites of Portugal to both the general meeting and the Pebble Pups!  Please join us for this treat!