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This unusual dental pattern indicates they likely employed a different feeding technique compared to other plesiosaurs
Paleoclimate Indicator: Strombus bubonius serves as a marker for past warm-water conditions in the Mediterranean
Despite surviving several mass extinction events throughout their history—including the Permian-Triassic extinction—they ultimately succumbed during the Cretaceous-Paleogene extinction event around 66 million years ago
primarily from the Chinle Formation in Arizona and New Mexico
4.8" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Sardonyx This unusual dental pattern indicatesLocation: Michigan, United States Weight: 3. 3 Ounces Dimensions: 4. 8 Inches Long, 2. 3 Inches Wide, 0. 4 Inches Thick The item pictured is the one you will receive. Devonian Age, 350 million years old Petoskey Stone is a unique rock and fossil, specifically a fossilized rugose coral known as Hexagonaria percarinata. These stones are typically pebble shaped and are found primarily in the northwestern and northeastern regions of Michigan's Lower
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