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The Eocene Green River Formation of Wyoming, Colorado, and Utah is famous for its exquisitely preserved fossil fish. Millions of specimens have been collected, making it one of the most accessible and affordable fossil formations for beginners.
Knightia
$20–$150. Most common Green River fish. Excellent beginner fossil.
Diplomystus
$50–$400. Classic "herring" shape, often preserved in groups.
Mioplosus / Priscacara
$100–$800. Higher quality predatory fish with excellent detail.
Large commercial quarries on private land in Wyoming produce the bulk of the market supply. Always buy from quarries that document private land origin. Collection on federal land is restricted.
Jurassic Depot scores every listing for provenance, authenticity, and documentation. The best way to avoid fakes is to demand proof — and to know what to ask for.