Other evolutionists saw the baneful implications to their long-age dogma, and claimed that the blood vessels were really bacterial biofilms, and the blood cells were iron-rich spheres called framboids.
Schweitzer’s team again removed the hard bony mineral with the chelating agent EDTA.
Their dominance continued through the Jurassic and Cretaceous periods and ended when the Cretaceous–Paleogene extinction event led to the extinction of most dinosaur groups 66 million years ago.
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The study authors said their report was the first to examine the pressure exerted by dino dentition. Still, it's a massive amount of force — equivalent to the creature dropping a hippopotamus on its prey.
Therrien was impressed with the complexity of the model, which reconstructed the jaw down to individual muscles. The teeth, or the hardened roof of the mouth, acted as pressure points on a beam, which exerted a bending force until the bone snapped.