They Found THIS In T. Rex Fossils, But Something Was Very Wrong

T. rex is the most famous dinosaur – we all know that. But were Megalodon, Mosasaurus or Pteranodon dinosaurs too? If you can't answer that, check out how our merch can help: https://wildsparks-shop.fourthwall.com/en-usd Makes a great gift, too! ____________________________ In this video: Soft tissue in a T. rex fossil was found in a 68-million-year-old thigh bone from Montana's Hell Creek Formation. For decades, the textbook rule said that nothing soft survives inside a fossil. So what is this material, and what does it say about the age of the bone? Paleontologist Mary Schweitzer found the tissue after placing a fragment of the bone in mild acid. What remained was stretchy, branching like blood vessels, with tiny dark red spheres inside. Her team published the Tyrannosaurus rex find in 2005, and critics soon called it contamination or bacterial slime. In 2009 her team pulled proteins from a duck-billed Brachylophosaurus. Soft tissue later turned up in Triceratops horns, hadrosaurs and ankylosaurs, which raised a harder question about time. Iron from the animal's own blood may explain how dinosaur soft tissue could last for millions of years. Schweitzer soaked ostrich blood vessels in an iron-rich solution, and they showed no decay after two years. Young Earth creationists, among them microscopist Mark Armitage, answer that two years is not 68 million. Both sides then looked for a clock inside the bone: carbon 14 and DNA. In 2019 Evan Saitta drilled into 75-million-year-old Centrosaurus bones in Alberta, Canada, under sterile conditions. If the textbook was wrong about fossils, what else was wrong about T. rex? T. rex had lips that covered its teeth, so the crocodile grin from Jurassic Park is outdated. Thomas Cullen at Auburn University tested skull length, enamel wear and jaw nerve openings against living reptiles. A 2026 study led by Adrian Boeye found that T. rex walked toe-first like a bird. Adults reached about 11 to 25 miles per hour, or 18 to 40 km/h. A hunter built like that leads to the question of size. T. rex grew to at least 43 feet, or 13 meters, and about 19,400 pounds, or 8,800 kilograms. Those are the figures for Scotty, a skeleton found in Saskatchewan, Canada. In 2026 Holly Woodward's team read hidden growth rings in 17 specimens under polarized light. The results changed the old 20-year growth estimate, but two specimens refused to fit. The real T. rex is stranger than the movie monster, with lips, heavy muscle and quick bird-like steps. Those two outliers lead into the 80-year fight over Nanotyrannus, named by Robert Bakker in 1988. Was it a separate small tyrannosaur or a teenage T. rex? And does the tissue in that thigh bone prove deep-time preservation, or demand a rewrite? #wildsparks #TRex #Dinosaurs #Paleontology