Illinois Isotelus Trilobite Identification
Isotelus Trilobite is a realistic Illinois fossil profile built around large trilobite often found as enrolled sections in limestone and weathered talus. In this state, success usually comes from learning Silurian and Devonian limestones, shale cuts, and glacial gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Key Traits
- ●broad cephalon
- ●large pygidium
- ●thick calcitic shell
- ●Check Silurian and Devonian limestones, shale cuts, and glacial gravels
Era
Ordovician
Type
arthropod
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