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Utahraptor

All articles tagged with #utahraptor

paleontology2 years ago

Unearthing Ancient Secrets: Utahraptor and Oldest Mosasaur Fossil Discovered

A groundbreaking study led by Utah's state paleontologist, Jim Kirkland, has established the absolute age of the Utahraptor to be 135 million years old, 10 million years older than previously believed. This discovery not only expands our knowledge of Utah's state dinosaur but also fills a significant gap in the fossil record, shedding light on the transition from the Jurassic to the Cretaceous period. The study, which utilized uranium-lead geochronology and radiocarbon dating techniques, also revealed the first North American record of the Weissert Event, a global catastrophe that occurred approximately 133 million years ago. This finding further solidifies Utah's status as a prominent hub for paleontology and geology.

paleontology2 years ago

Early Existence of Largest Raptor Dinosaurs Unveiled by Researchers.

A geological study of the rock formation that encased a fossilized example of the world's biggest "raptor" dinosaur, Utahraptor, shows it's 10 million years older than previously understood, indicating that the rocks at the Stikes Quarry are at least 135 million years old. The revised age has important implications for the evolutionary history of dinosaurs and narrows the gap in the rock record at the boundary between the Jurassic and Cretaceous Periods in Utah. The study also revealed that the rock strata from the Stikes Dinosaur Quarry were deposited during a global change episode known as the Weissert Event.