Minnesota Isotelus Trilobite Identification

Isotelus Trilobite is a realistic Minnesota fossil profile built around large trilobite often found as enrolled sections in limestone and weathered talus. In this state, success usually comes from learning glacial till, Devonian limestones, and Lake Superior 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 glacial till, Devonian limestones, and Lake Superior gravels

Era

Ordovician

Type

arthropod

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