Saturday was a great day for fossil hunting.  It was a little hot in the quarry, but the fun and finds outweighed the heat.  The Trask Bridge Quarry exposes the Grand Detour, Mifflin, and Pecatonica Formations of the Platteville Group in Northern Illinois.  These formations were formed during the Ordovician Period, some 450+ million years ago.

The Trask Bridge (Farm) Quarry is a few miles west of Rockford.  We met at 9:00 AM and proceeded to collect until 12:00 PM.  There were about 20 participants.  With finds ranging from cephalopods, gastropods, bivalves (pelycopods), to trilobite parts.   A good time was had by all!

Get that rock out!

What did you find?

Good friends.

Gastropod.

Trilobite Cephalon (head).

Another snail.

Someone lost their breakfast!

Where is it?

Have a great summer!