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Fossil Discovery: Diplodocus Unearthed at Dinosaur National Monument

1/17/2026

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Summary

Story summary

Crews at Dinosaur National Monument uncovered a long-necked dinosaur fossil, likely a Diplodocus, during construction in September 2025.
About 3,000 pounds of fossils were removed and are being studied at the Utah Field House of Natural History State Park Museum.
Dinosaur National Monument was established in 1915, spans 210,000 acres, and features the Quarry Exhibit Hall with more than 1,500 fossils, including Allosaurus and Stegosaurus.

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Story summary

Crews at Dinosaur National Monument uncovered a long-necked dinosaur fossil, likely a Diplodocus, during construction in September 2025.
About 3,000 pounds of fossils were removed and are being studied at the Utah Field House of Natural History State Park Museum.
Dinosaur National Monument was established in 1915, spans 210,000 acres, and features the Quarry Exhibit Hall with more than 1,500 fossils, including Allosaurus and Stegosaurus.