Arkansas Blastoid
Mississippian
About Arkansas Blastoid
The Arkansas Blastoid is a echinoderm fossil dating to the Mississippian. Blastoid is a realistic Arkansas fossil profile built around bud-shaped echinoderm with petal-like ambulacra preserved in limestone. 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, Arkansas Blastoid fossils from the Mississippian are found across Arkansas. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Law layer
Arkansas state guide
Fossil collecting rules in Arkansas vary by land status and fossil type. Common invertebrate fossils may be collectible on some public lands, but vertebrate fossils, protected park units, tribal lands, and cultural sites require a much higher level of care and often a permit. This is especially relevant in Mazon-like plant beds, marine invertebrates, and river gravels.
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Location: Ozark-St. Francis National Forests
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Ouachita National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Petit Jean State Park
State Park • Photo opportunities, Exposed shoreline stones
Location: Devil's Den State Park
State Park • Photo opportunities, Exposed shoreline stones
Identification Tips
- ●bud shape
- ●five petaloid grooves
- ●small attachment point
- ●Check Mississippian limestones, chert gravels, and shale roadcuts
Where Found
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Related Fossils
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Illinois Crinoid Stem
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Indiana Crinoid Stem
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Ohio Crinoid Stem
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Minnesota Crinoid Stem
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Crinoid Stem is a realistic Minnesota fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. In this state, success usually comes from learning glacial till, Devonian limestones, and Lake Superior gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.
Wisconsin Crinoid Stem
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Crinoid Stem is a realistic Wisconsin fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. In this state, success usually comes from learning glacial till, Devonian limestones, and Lake Superior gravels, then timing runoff, reservoir drawdown, surf cuts, or road work that exposes fresh fossil-bearing rock instead of hunting blindly.