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Updated March 2026
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Missouri Crinoid Calyx fossil specimen
echinodermMississippianUpdated March 2026

Missouri Crinoid Calyx

Mississippian

About Missouri Crinoid Calyx

The Missouri Crinoid Calyx is a echinoderm fossil dating to the Mississippian. Crinoid Calyx is a realistic Missouri fossil profile built around rarer crown portion of sea lilies with cup plates and arm bases. In this state, success usually comes from learning Mississippian limestones, chert gravels, and shale roadcuts, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.

“According to TroveRadar, Missouri Crinoid Calyx fossils from the Mississippian are found across Missouri. TroveRadar's field database catalogs 795+ fossil entries for identification and collection guidance.

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Identification Tips

  • cup-shaped plated body
  • radial symmetry
  • attached arm sockets
  • Check Mississippian limestones, chert gravels, and shale roadcuts

Where Found

Missouri

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Explore More

How do I identify a Missouri Crinoid Calyx fossil?
Missouri Crinoid Calyx fossils from the Mississippian can be identified by: cup-shaped plated body. radial symmetry. attached arm sockets. Check Mississippian limestones, chert gravels, and shale roadcuts. They are most commonly found in Missouri.
Where are Missouri Crinoid Calyx fossils found?
Missouri Crinoid Calyx fossils are found in Missouri. Look in sedimentary rock formations dating to the Mississippian era. The best collecting is typically found in exposed roadcuts, creek banks, and quarry sites.
How old are Missouri Crinoid Calyx fossils?
Missouri Crinoid Calyx fossils date to the Mississippian. They are classified as echinoderm fossils in TroveRadar's database, which catalogs 795+ fossil entries across North America.
Is it legal to collect Missouri Crinoid Calyx 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.