Beasts of the Mesozoic Bistahieversor sealeyi
Bistahieversor sealeyi was discovered in the Bisti/De-Na-Zin Wilderness area of New Mexico, USA. Its name "Bistahieversor" is derived from the Navajo word "Bistahi" (meaning "giant") and the Greek word "versor" (meaning "to overturn" or "to reverse"), which refers to the ability of this dinosaur to change the prevailing view of tyrannosaurid evolution. The species name "sealeyi" honors the late David Sealey, who was a financial supporter of the research.
Bistahieversor was a relatively large predator, reaching lengths of about 20 to 25 feet (6 to 7.5 meters) and standing around 6 to 7 feet (1.8 to 2.1 meters) tall at the hip. It was not as massive as Tyrannosaurus rex but was still a formidable predator of its time.
Like other tyrannosaurids, Bistahieversor had a large skull with powerful jaws filled with serrated teeth. It had short, strong arms with two-fingered hands, a robust body, and long, powerful hind limbs adapted for running. Its tail was also relatively long and balanced its body.
Bistahieversor, like other tyrannosaurs, was a carnivore. It likely preyed on a variety of smaller dinosaurs and other animals that were present in its ecosystem during the Late Cretaceous.
Bistahieversor is important in the study of tyrannosaurid evolution because it provides insights into the diversity and relationships within this group. It lived earlier in time than some of the more famous tyrannosaurs like T. rex, and its discovery has contributed to our understanding of the evolutionary history and adaptations of these apex predators.
During the Late Cretaceous, the region where Bistahieversor lived was likely a floodplain with a mix of forests, rivers, and open areas. It shared its environment with a variety of other dinosaurs, including herbivorous dinosaurs like hadrosaurs and ceratopsians.
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by Beasts of the Mesozoic
15+ Years
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