Paleontica Community

Trilobite! That's it! That explains the separated units. Thanks for the lesson, Smaug! Smaug wrote : After checking the geology of the grand rapids bedrock on the following link http://0.tqn.com/d/geology/1/0/C/I/michmapbigold.jpg you could asume that the rock is from the upper mississipian wich ...

Looks like a moluusk shell in cross-section - possibly. But the fact that the units are separated is at odds with that ID...