Verified by TroveRadar Field Database
Updated March 2026
795+ Fossil Entries
arthropodOrdovicianUpdated March 2026

Indiana Isotelus Trilobite

Ordovician

Indiana Isotelus Trilobite fossil specimen

About Indiana Isotelus Trilobite

The Indiana Isotelus Trilobite is a arthropod fossil dating to the Ordovician. Isotelus Trilobite is a realistic Indiana 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.

“According to TroveRadar, Indiana Isotelus Trilobite fossils from the Ordovician are found across Indiana. TroveRadar's field database catalogs 795+ fossil entries for identification and collection guidance.

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Identification Tips

  • broad cephalon
  • large pygidium
  • thick calcitic shell
  • Check Silurian and Devonian limestones, shale cuts, and glacial gravels

Where Found

Indiana

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Illinois Trilobite

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Trilobite is a realistic Illinois fossil profile built around segmented marine arthropod preserved in shale or limestone from ancient inland seas. 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.

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Indiana Trilobite

Paleozoic

Trilobite is a realistic Indiana fossil profile built around segmented marine arthropod preserved in shale or limestone from ancient inland seas. 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.

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Ohio Trilobite

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Trilobite is a realistic Ohio fossil profile built around segmented marine arthropod preserved in shale or limestone from ancient inland seas. 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.

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Ohio Trilobite

Paleozoic

Trilobite is a realistic Ohio fossil profile built around segmented marine arthropod preserved in shale or limestone from ancient inland seas. In this state, success usually comes from learning Devonian shales, Mississippian limestones, and glacial gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

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Pennsylvania Trilobite

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Trilobite is a realistic Pennsylvania fossil profile built around segmented marine arthropod preserved in shale or limestone from ancient inland seas. In this state, success usually comes from learning Devonian shales, Mississippian limestones, and glacial gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

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Explore More

How do I identify a Indiana Isotelus Trilobite fossil?
Indiana Isotelus Trilobite fossils from the Ordovician can be identified by: broad cephalon. large pygidium. thick calcitic shell. Check Silurian and Devonian limestones, shale cuts, and glacial gravels. They are most commonly found in Indiana.
Where are Indiana Isotelus Trilobite fossils found?
Indiana Isotelus Trilobite fossils are found in Indiana. Look in sedimentary rock formations dating to the Ordovician era. The best collecting is typically found in exposed roadcuts, creek banks, and quarry sites.
How old are Indiana Isotelus Trilobite fossils?
Indiana Isotelus Trilobite fossils date to the Ordovician. They are classified as arthropod fossils in TroveRadar's database, which catalogs 795+ fossil entries across North America.
Is it legal to collect Indiana Isotelus Trilobite fossils?
Fossil collecting laws vary by state and land ownership. Common invertebrate fossils are generally collectible on some public lands for personal use, but vertebrate fossils and collecting on protected lands may require permits. Always check local regulations before collecting. Use TroveRadar's State Guides for specific rules.