Iowa Blastoid
Mississippian
About Iowa Blastoid
The Iowa Blastoid is a echinoderm fossil dating to the Mississippian. Blastoid is a realistic Iowa fossil profile built around bud-shaped echinoderm with petal-like ambulacra preserved in limestone. 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 Blastoid fossils from the Mississippian are found across Iowa. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Turn Iowa Blastoid into a month, law, metro, and ground plan.
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Timing layer
Monthly state routes
Law layer
Iowa state guide
Fossil collecting rules in Iowa 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 Devonian coral, geodes, and glacial gravels.
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City hubs in Iowa
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Place layer
Trail and ground routes
Trail: Devonian Fossil Gorge
Fossil Bed • Site-specific opportunities, Historic landscape clues
Trail: Devonian Fossil Gorge Exposure Route
Fossil Bed • Site-specific opportunities, Historic landscape clues
Location: Backbone State Park
State Park • Photo opportunities, Exposed shoreline stones
Location: Ledges State Park
State Park • Photo opportunities, Exposed shoreline stones
Identification Tips
- ●bud shape
- ●five petaloid grooves
- ●small attachment point
- ●Check Silurian and Devonian limestones, shale cuts, and glacial gravels
Where Found
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Related Fossils
Iowa Crinoid Stem
Paleozoic
Crinoid Stem is a realistic Iowa fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. 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.
Illinois Crinoid Stem
Paleozoic
Crinoid Stem is a realistic Illinois fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. 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.
Indiana Crinoid Stem
Paleozoic
Crinoid Stem is a realistic Indiana fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. 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.
Ohio Crinoid Stem
Paleozoic
Crinoid Stem is a realistic Ohio fossil profile built around disk-like stem segments from sea lilies in shallow marine limestone. 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.
Minnesota Crinoid Stem
Paleozoic
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
Paleozoic
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.