Devonian Stromatoporoid Fossil Ancient Michigan Sea - Trilobite Pygidium Imprint

Description

Devonian Stromatoporoid Fossil Ancient Michigan Sea - Trilobite Pygidium Imprint
Trilobite Pygidium Imprint
~ hard to find in Michigan, see photos
Presque Isle County, Michigan
Devonian Period 350 MYA
Weight of fossil 8 lbs 5 ounces
Size: 11" x 6.5" x 3"
The
Stromatoporoidea
had massive calcareous skeletons that are preserved as rather conspicuous fossils. Some
Stromatoporoidea
formed domes in excess of 5 meters in diameter. The
Stromatoporoidea
grew by secreting calcareous sheets. This growth process resulted in it's layers.
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