STATES CHRONICLE – According to a team of researchers, the 74 million years old skull of the so-called Bisti Beast dinosaur might help reveal new data about the evolution of predatory dinosaurs. The scientists used 3D imaging to scan and analyze the remains of this relative of the T-rex.
The Bisti Beast to Help Reveal Information About Both Itself and Other Species
The Bistahieversor sealeyi or the Bisti Beast was discovered some 20 years ago in northwestern New Mexico. It is believed to be some 74 million years old, around 10 million years older than the Tyrannosaurus Rex. Bisti shows differences in its bones, especially the skull, from these later dinosaurs, so researchers decided to take a closer look.
To do so, they took a high-energy CT scan of its skull. The high energy imaging was required because of the thickness of the bones. However, it reportedly helped offer “the highest resolution” scan yet of the skull structure’s brain cavities and sinus.
The 3.5-foot-long cranium revealed impacted teeth that had been hiding in its jaw. It also showed the pathways chosen by some blood vessels and nerves.
“The results add a new piece to the puzzle of how these bone-crushing top predators evolved over millions of years. The team’s study illuminates the Bisti Beast’s place in the evolutionary tree that culminated in Tyrannosaurus rex,” stated the research team.
The New Mexico Los Alamos National Laboratory researchers that conducted the study detailed some of their results in a newsletter.
More detailed results are expected to be presented at the annual Society of Vertebrate Paleontology meeting taking place in Canada this month.
The researchers stated that the Bisti Beast skull is helping reveal how the different species within the Tyrannosaurus Rex family evolved and are related to one another.
The team says that the Bisti represents the “most basal tyrannosaurus” to have small forelimbs, and also bone-crushing and big-headed adaptations.
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