North America, Western United States, Wyoming, Kemmerer, Green River Formation, Eocene Period, ca. 56 to 33 million years ago. This is a remarkable fossilized stingray of the extinct genus Heliobatis radians within a limestone matrix. The ray presents an ovoid body and narrow tail that preserved some of the minute spines! From the posterior, just above the tail are the remains of a pelvic fin. These rays are believed to have swum along the ocean floor, searching for prey; they have triangular teeth for feeding on small fish and crustaceans. Like sharks, they have an inner skeleton made of cartilage, and as a result, it is rare to find fully preserved examples of this species, but this fossil captures some miniscule details that normally are lost to natural decay! Size of stingray: 4" L x 2" W (10.2 cm x 5.1 cm); stone matrix: 6" L x 6.5" W (15.2 cm x 16.5 cm)
Provenance: private Hagar collection, Wildwood, Missouri, USA
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#160034
Condition
Fossil is within the natural stone matrix. Tip of tail overhangs the matrix edge. Due to excavation process, a piece is reattached to the tip of tail and remains of visible adhesive are visible on this area. Body is faint but the tail has great details!