Temporal range: Early Cretaceous (Berriasian – Valanginian), 139–134.6 Ma
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Reconstructed skeleton in BYU Museum of Paleontology
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
Saurischia
Clade:
Theropoda
Family:
†Dromaeosauridae
Clade:
†Eudromaeosauria
Subfamily:
†Dromaeosaurinae
Genus:
†Utahraptor Kirkland, Gaston & Burge, 1993
Type species
†Utahraptor ostrommaysi
Kirkland et al., 1993
Utahraptor (meaning "Utah's predator") is a genus of large dromaeosaurid (a group of feathered carnivorous theropods) dinosaur that lived during the Early Cretaceous period from around 135 to 130 million years ago in what is now the United States. The genus was described in 1993 by an American paleontologist James Kirkland and colleagues with the type species Utahraptor ostrommaysi, based on fossils that had been unearthed earlier from the Cedar Mountain Formation of Utah. Later, many additional specimens were described including those from the skull and postcranium in addition to those of younger individuals.
It was a heavily built, ground-dwelling, bipedal carnivore. It contains a single species, Utahraptor ostrommaysi, which is the largest-known member of the family Dromaeosauridae, measuring about 5–6 metres (16–20 ft) long and weighing around 250–350 kilograms (550–770 lb). Its large size and variety of unique features have earned it attention in both pop culture and the scientific community. The jaws of Utahraptor were lined with small, serrated teeth that were used in conjunction with a large "killing claw" on its second toe to dispatch its prey. Its skull was boxy and elongated, akin to other dromaeosaurids like Dromaeosaurus and Velociraptor.
Utahraptor is in the subfamily Dromaeosaurinae, which contained the biggest of the dromaeosaurs in the form of Utahraptor as well as Dakotaraptor and Achillobator. Being a carnivore, Utahraptor was adapted to hunt the other animals of the Cedar Mountain Formation ecosystem such as ankylosaurs and iguanodonts. Evidence from the leg physiology supports the idea of Utahraptor being an ambush predator, in contrast to other dromaeosaurs that were pursuit predators.
Utahraptor (meaning "Utah's predator") is a genus of large dromaeosaurid (a group of feathered carnivorous theropods) dinosaur that lived during the Early...
Utahraptor State Park is a state park in Grand County, Utah, United States, about 14 miles (23 km) northwest of Moab. The park is located east of U.S....
Cretaceous Period, told from the point of view of Raptor Red, a female Utahraptor. Raptor Red features many of Bakker's theories regarding dinosaurs' social...
largest known dromaeosaurids, Utahraptor. Dakotaraptor, however, does not have the proportions and adaptations of Utahraptor, but more closely resembles...
of the largest dromaeosaurs, along with Austroraptor, Dakotaraptor and Utahraptor. Achillobator was a deep-bodied and relatively short-armed dromaeosaurid...
(in the case of Velociraptor) to approaching or over 6 m (20 ft) (in Utahraptor, Dakotaraptor and Achillobator). Large size appears to have evolved at...
of the theropod group Dromaeosauridae. The earliest dromaeosaurine is Utahraptor, dating back to the Early Cretaceous period in North America, however...
animal. In an analysis of the clade Dromaeosaurinae, species such as Utahraptor, Achillobator and Yurgovuchia have been recovered. The genus Dakotaraptor...
The earliest known definitive eudromaeosaur is the large dromaeosaurine Utahraptor ostrommaysi, from the Cedar Mountain Formation, dated to 124 million years...
on Jurassic Park began before the discovery of the large dromaeosaurid Utahraptor was made public in 1991, but as Jody Duncan wrote about this discovery:...
number of newspapers. The comic centers on three main characters, T-Rex, Utahraptor and Dromiceiomimus. Comics are posted every Monday, Wednesday, and Friday...
largest dromaeosaurids known, with only Achillobator, Dakotaraptor, and Utahraptor approaching or surpassing it in length. The type specimen of Austroraptor...
Spinoraptor - This dinosaur was made from the DNA of a Spinosaurus and a Utahraptor. It debuted in Lego Jurassic World: The Indominus Escape and appeared...
The film also states that Velociraptors are 9 feet (2.7 m) long. The Utahraptor, however, was a more accurate dinosaur in size, length, and height comparison...
In 2017 the Oxford University Natural History Museum donated a model Utahraptor for the entrance to the Children's Hospital. The main parts of the hospital...
employee, discovered the bones of a real dinosaur that he christened Utahraptor ostrommaysi -- ostrom for Yale University scientist John Ostrom and maysi...
Green River Huntington Millsite Palisade Scofield Territorial Statehouse Utahraptor Yuba State Parks Southern Region Anasazi Coral Pink Sand Dunes Dead Horse...
The teeth belong to an animal the size of dromaeosaurines of the genus Utahraptor, but they appear to belong to a velociraptorine, judging by the shape...
making it of comparable size to the gigantic North American dromaeosaurs Utahraptor and Dakotaraptor. Its fossils lack the characteristic "sickle claw" on...
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