Acanthotelson stimpsoni (Shrimp) - Mazon Creek Fossil f4436a3546081d50a5abd1add487c10e Michigan native copper

Michigan native copper

other finds have been discovered in Pakistan and a few other locations

Allosaurus had a very muscular body and a massive jaw

the mineral Septarian formed in an ancient sea floor some 50-70 million years ago as sediment collected around sea life as they decomposed

with its remains dating back only 150

Acanthotelson stimpsoni (Shrimp) - Mazon Creek Fossil f4436a3546081d50a5abd1add487c10e Michigan native copperMarine Estuarine Shrimp: Fossil shrimp were first reported from the Mazon Creek area around 1860, but prior to the opening of Pit 11 in the mid 1950s, the diversity was remarkably small. Now, they are divided into robust non marine and marine estuarine groups. These fossil arthropods are preserved in full body detail or as exoskeleton molts.