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

Iowa Isotelus Trilobite

Ordovician

Iowa Isotelus Trilobite fossil specimen

About Iowa Isotelus Trilobite

The Iowa Isotelus Trilobite is a arthropod fossil dating to the Ordovician. Isotelus Trilobite is a realistic Iowa 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, Iowa Isotelus Trilobite fossils from the Ordovician are found across Iowa. 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

Iowa

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Iowa Trilobite

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Trilobite is a realistic Iowa 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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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

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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

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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 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 Iowa Isotelus Trilobite fossil?
Iowa 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 Iowa.
Where are Iowa Isotelus Trilobite fossils found?
Iowa Isotelus Trilobite fossils are found in Iowa. 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 Iowa Isotelus Trilobite fossils?
Iowa 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 Iowa 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.