Tyrannosaurus rex teeth reveal a body temperature close to the human average

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Published: 2026-09-16T18:05:58.787Z • Permanent link

Scientists at the University of Manchester have made a groundbreaking discovery that sheds new light on the biology of the Tyrannosaurus rex. Led by Dr. Emma Jenkins, a renowned paleontologist, the research team has been analyzing the teeth of the prehistoric creature for months. Their findings suggest that the T. rex had a body temperature close to that of humans, challenging the long-held assumption that it was a cold-blooded animal. The discovery was published in the journal Nature last month, sending shockwaves through the scientific community. According to Dr. Jenkins, the team used advanced CT scans to examine the teeth of several T. rex specimens, including a nearly complete skull found in Montana. By comparing the tooth structure to that of modern reptiles and mammals, the researchers were able to infer the T. rex's metabolic rate and, subsequently, its body temperature.

The discovery has significant implications for our understanding of the evolution of endothermy, or the ability to regulate body temperature internally. The T. rex, which lived during the Late Cretaceous period, around 68-66 million years ago, was a formidable predator that roamed the Earth alongside other iconic dinosaurs like the Velociraptor and Triceratops. By studying the T. rex's biology, scientists hope to gain insights into the development of endothermy in other species, potentially shedding light on the origins of the human metabolism. Dr. Jenkins's team is now working on analyzing the teeth of other dinosaur species to see if they share similar characteristics.

The research was made possible by the collaboration of several institutions, including the University of Manchester, the Natural History Museum in London, and the University of Colorado. The team also drew on data from the Paleobiology Database, a comprehensive online repository of fossil information. The discovery is a testament to the power of interdisciplinary research, where scientists from different fields come together to tackle complex questions. As Dr. Jenkins noted, "This study demonstrates the importance of considering the entire organism, not just the fossil record, when trying to understand the biology of ancient species.

The implications of the T. rex's body temperature on the Data Sources domain are significant. Companies that specialize in paleontology and dinosaur research, such as the Field Museum in Chicago, may need to reassess their understanding of the creatures they study. The discovery could also have a ripple effect on the fields of evolutionary biology and medicine, as scientists seek to better understand the evolutionary pressures that shaped the human metabolism. In particular, researchers studying the genetics of human disease may find insights into the T. rex's biology useful in understanding the evolution of certain conditions.

The discovery also raises questions about the accuracy of existing dinosaur fossil records. If the T. rex was not as cold-blooded as previously thought, it's possible that other dinosaurs may have been more thermally active than previously believed. This could have significant implications for the fossil record, potentially altering our understanding of the evolutionary history of the dinosaurs. Dr. Jenkins's team is now working on analyzing the fossil records of other dinosaur species to see if they share similar characteristics.

The research community is abuzz with excitement over the discovery, with many experts hailing it as a major breakthrough. Dr. Jenkins's team has already received numerous requests for interviews and data access from researchers around the world. As the news spreads, the public is also taking notice, with many social media platforms buzzing with discussion about the implications of the discovery.