
Arizona Stromatolite
Precambrian-Present
About Arizona Stromatolite
The Arizona Stromatolite is a microbial fossil dating to the Precambrian-Present. Stromatolite is a realistic Arizona fossil profile built around layered dome or column built by microbial mats in shallow water. 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 Stromatolite fossils from the Precambrian-Present are found across Arizona. TroveRadar's field database catalogs 696+ fossil entries for identification and collection guidance.”
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Arizona state guide
Fossil collecting rules in Arizona 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 petrified wood, Triassic logs, and badlands bone fragments.
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Location: Coconino National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Tonto National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Apache-Sitgreaves National Forests
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Location: Kaibab National Forest
National Forest • Seasonal edible mushrooms, Common invertebrate fossils in float
Identification Tips
- ●concentric laminae
- ●wavy layering
- ●carbonate mound structure
- ●Check badlands mudstones, petrified wood flats, and playa margins
Where Found
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Related Fossils

Minnesota Stromatolite
Precambrian-Present
Stromatolite is a realistic Minnesota fossil profile built around layered dome or column built by microbial mats in shallow water. 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 Stromatolite
Precambrian-Present
Stromatolite is a realistic Wisconsin fossil profile built around layered dome or column built by microbial mats in shallow water. 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.

Michigan Stromatolite
Precambrian-Present
Stromatolite is a realistic Michigan fossil profile built around layered dome or column built by microbial mats in shallow water. 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.

Montana Stromatolite
Precambrian-Present
Stromatolite is a realistic Montana fossil profile built around layered dome or column built by microbial mats in shallow water. 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.

Idaho Stromatolite
Precambrian-Present
Stromatolite is a realistic Idaho fossil profile built around layered dome or column built by microbial mats in shallow water. 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.

Wyoming Stromatolite
Precambrian-Present
Stromatolite is a realistic Wyoming fossil profile built around layered dome or column built by microbial mats in shallow water. 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.