1.8" Fossil Turtle Shell Judith River Formation Montana Dinosaur Cretaceous Age

Location: Judith River Formation, Montana

Weight: 0.7 Ounces

Dimensions: 1.8 Inches Long, 1.3 Inches Wide, 0.5 Inches Thick

The item pictured is the one you will receive.

This is a genuine fossil.

During the Cretaceous era, spanning roughly 145 to 66 million years ago, turtles represented a well-established and morphologically diverse reptilian lineage. Their distinctive bony carapace provided essential protection while accommodating remarkable variation in body size and ecological niche. Cretaceous turtles ranged from diminutive terrestrial forms to enormous aquatic species adapted to marine environments. The Archelon exemplifies this diversity—a Late Cretaceous sea turtle with a shell exceeding four meters in length, perfectly suited for navigating the shallow epicontinental seas that periodically inundated North America. Similarly, Protostega, another Late Cretaceous giant, possessed comparable shell dimensions and likely sustained itself on gelatinous prey such as jellyfish and other soft-bodied marine fauna. These specimens demonstrate the sophisticated evolutionary adaptations that allowed turtles to thrive across multiple habitats during this dynamic geological period.