加州大学洛杉矶分校的科学家利用地球化学技术对霸王龙化石牙齿进行了分析，确定这种远古恐龙的体温约为97华氏度，上下浮动几度。1 这一发现已发表在周三的《科学进展》期刊上。1
该研究采集的样本包括洛杉矶县自然历史博物馆收藏的著名霸王龙"托马斯"的两颗牙齿。1 研究结果表明，霸王龙的体温与现代印度象（97度）相近，略低于人类（98度），但明显低于现存鸟类如鸵鸟（101-103度）和鸡（105-107度）。1 约翰霍普金斯大学分子古生物学家贾斯米娜·韦曼评价这一发现"绝对壮观"。1 这项研究通过化学方法进一步证实了霸王龙是温血动物，与此前的地球化学研究和化石CT扫描结论相符。1
Scientists at UCLA have determined that Tyrannosaurus rex maintained a body temperature of approximately 97 degrees Fahrenheit, fluctuating by a few degrees, through geochemical analysis of fossilized teeth 1. The research, published Wednesday in Science Advances, used chemical methods to confirm that the ancient predator was warm-blooded, aligning with previous scientific conclusions 1. The T. rex's body temperature compared closely to that of modern elephants at 97 degrees and humans at 98 degrees, though it remained cooler than many modern birds such as ostriches, which maintain temperatures between 101 and 103 degrees 1.
The study examined teeth samples including two from a famous T. rex specimen named "Thomas," held in the collection of the Los Angeles County Natural History Museum 1. Jasmina Wiemann, a molecular paleontologist at Johns Hopkins University, described the findings as "absolutely spectacular" 1. Prior geochemical research and fossil CT scanning had already suggested that dinosaurs were warm-blooded; this latest analysis provides direct chemical evidence supporting that conclusion 1.
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