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Updated April 2026
696+ Fossil Entries
Arizona Elrathia Trilobite fossil specimen
arthropodCambrianUpdated March 2026

Arizona Elrathia Trilobite

Cambrian

About Arizona Elrathia Trilobite

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

“According to TroveRadar, Arizona Elrathia Trilobite fossils from the Cambrian are found across Arizona. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.

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Identification Tips

  • flat body plan
  • fine segments
  • thin dark shale matrix
  • Check badlands mudstones, petrified wood flats, and playa margins

Where Found

Arizona

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Related Fossils

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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

Illinois Trilobite

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Indiana Trilobite

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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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Pennsylvania Trilobite

Pennsylvania Trilobite

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West Virginia Trilobite

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Explore More

How do I identify a Arizona Elrathia Trilobite fossil?
Arizona Elrathia Trilobite fossils from the Cambrian can be identified by: flat body plan. fine segments. thin dark shale matrix. Check badlands mudstones, petrified wood flats, and playa margins. They are most commonly found in Arizona.
Where are Arizona Elrathia Trilobite fossils found?
Arizona Elrathia Trilobite fossils are found in Arizona. 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 Arizona Elrathia Trilobite fossils?
Arizona Elrathia Trilobite fossils date to the Cambrian. They are classified as arthropod fossils in TroveRadar's database, which catalogs 696+ fossil entries across North America.
Is it legal to collect Arizona 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.