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

Idaho Elrathia Trilobite

Cambrian

Idaho Elrathia Trilobite fossil specimen

About Idaho Elrathia Trilobite

The Idaho Elrathia Trilobite is a arthropod fossil dating to the Cambrian. Elrathia Trilobite is a realistic Idaho fossil profile built around small shale trilobite famous from thin laminated western exposures. In this state, success usually comes from learning dinosaur-bearing mudstones, glacial gravels, and marine shales, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

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

🧭

Pin this Idaho Elrathia Trilobite specimen in your field journal

TroveRadar app -- free on iOS and Android

Get App

Identification Tips

  • flat body plan
  • fine segments
  • thin dark shale matrix
  • Check dinosaur-bearing mudstones, glacial gravels, and marine shales

Where Found

Idaho

Take TroveRadar Into the Field

Offline maps, species identification, and find logging. Never lose a honey-hole again.

Download Free App

Related Fossils

Photo coming soon

Iowa Trilobite

Paleozoic

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.

arthropod
Photo coming soon

Illinois Trilobite

Paleozoic

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.

arthropod
Photo coming soon

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.

arthropod
Photo coming soon

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 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.

arthropod
Photo coming soon

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.

arthropod
Photo coming soon

Pennsylvania Trilobite

Paleozoic

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.

arthropod

Explore More

How do I identify a Idaho Elrathia Trilobite fossil?
Idaho Elrathia Trilobite fossils from the Cambrian can be identified by: flat body plan. fine segments. thin dark shale matrix. Check dinosaur-bearing mudstones, glacial gravels, and marine shales. They are most commonly found in Idaho.
Where are Idaho Elrathia Trilobite fossils found?
Idaho Elrathia Trilobite fossils are found in Idaho. Look in sedimentary rock formations dating to the Cambrian era. The best collecting is typically found in exposed roadcuts, creek banks, and quarry sites.
How old are Idaho Elrathia Trilobite fossils?
Idaho Elrathia Trilobite fossils date to the Cambrian. They are classified as arthropod fossils in TroveRadar's database, which catalogs 795+ fossil entries across North America.
Is it legal to collect Idaho Elrathia 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.