Idaho Inoceramid Clam
Late Cretaceous
About Idaho Inoceramid Clam
The Idaho Inoceramid Clam is a mollusk fossil dating to the Late Cretaceous. Inoceramid Clam is a realistic Idaho fossil profile built around large thin-shelled bivalve from western interior seaway deposits. 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 Inoceramid Clam fossils from the Late Cretaceous are found across Idaho. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Fossil collecting rules in Idaho 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 Miocene lake beds and river gravels.
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Location: Boise National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Payette National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Salmon-Challis National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Coeur d'Alene National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Identification Tips
- ●broad shell plates
- ●concentric growth lines
- ●chalk or shale matrix
- ●Check dinosaur-bearing mudstones, glacial gravels, and marine shales
Where Found
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