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Utahraptor was one of, if not the largest and heaviest of all dromaeosaurids, with the largest assigned specimen BYUVP 15465 having a femoral length of 56.5–60 cm (22.2–23.6 in). [8] [9] Utahraptor is estimated to have reached 6–7 metres (20–23 ft) in length and somewhat less than 500 kg (1,100 lb), comparable in weight to a polar bear.
The park is located east of U.S. Route 191 and west of Arches National Park, and covers 6,500 acres (26 km 2).The park contains the Dalton Wells Quarry, which have yielded remains of dinosaurs that have advanced understanding of paleontology, such as those of the giant dromaeosaur dinosaur Utahraptor ostrommaysi. [2]
FanCollector; Utahraptor silhouette based on work by User:ArthurWeasley Licensing I, the copyright holder of this work, hereby publish it under the following license:
Sauropods were still present, but they were not as diverse as they were in the Jurassic Period. Theropods from the Early Cretaceous of North America include dromaeosaurids such as Deinonychus and Utahraptor, the carnosaur Acrocanthosaurus, and the coelurosaur Microvenator. Sauropods included Astrodon, Brontomerus, and Sauroposeidon.
Aside from the ever-present threat of poachers, Javan rhinos face other threats. Because there are so few left, there is a lack of genetic diversity in the herd, and only about two males for every ...
Amid the hills and history of Jamestown, Tennessee (Mark Twain’s parents lived there many moons ago), there’s a place where pigs rule the roost — well, technically, the pastures, mud wallows ...
An unusual result was found by Hartman and colleagues in 2019, where both Utahraptor and Achillobator were found to be outside Dromaeosaurinae and Velociraptorinae, joined by Yixianosaurus, [22] which is usually considered an anchiornithid. [16] The left cladogram follows Cau et al. 2017, [16] while the right cladogram follows Jasinski et al ...
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