Dental Isotope Analysis Reveals Tyrannosaurus Rex Maintained High Body Temperatures

By Jacek Krywko · Ars Technica · 2026-09-20

Ars Technica reports that geochemists at UCLA have determined the body temperature of the Tyrannosaurus rex by studying chemical signatures in fossilized teeth. The researchers utilized a method called clumped isotope thermometry to find that these ancient predators functioned at

Ars Technica reports that geochemists at UCLA have determined the body temperature of the Tyrannosaurus rex by studying chemical signatures in fossilized teeth. The researchers utilized a method called clumped isotope thermometry to find that these ancient predators functioned at