Scientists Found a Baby Tyrannosaur Claw in Canada — What It Reveals Is Terrifying

Ancient Canada reveals one of the rarest tyrannosaur discoveries ever made: a tiny fossil claw from Alberta belonging to an animal that never even hatched. The claw was found in rock around 71.5 million years old near Morrin, Alberta, and has been attributed to Albertosaurus, one of the large tyrannosaurs that lived in western Canada before Tyrannosaurus rex appeared. What makes it extraordinary is its age at death. Researchers concluded that the claw came from an embryo still developing inside its egg. Before this discovery, no confirmed tyrannosaur embryo or egg had ever been identified despite more than a century of fossil collecting. By comparing the claw with tyrannosaurs at different stages of growth, scientists estimated that the unhatched animal may already have been around 1.1 metres long from nose to tail — roughly the length of a medium-sized dog. The same research also examined an embryonic tyrannosaur jaw from Montana. Together, the two fossils revealed that baby tyrannosaurs already possessed many of the distinctive features seen in adults before they even hatched. The findings also allowed researchers to estimate the size of a tyrannosaur egg. Based on the embryos, the eggs may have been around 43 centimetres long, placing them among the largest dinosaur eggs ever estimated. Yet no confirmed tyrannosaur nest or egg has ever been found. Scientists still do not know whether these predators nested in environments where eggs rarely fossilized, whether their shells have simply been overlooked, or whether unidentified tyrannosaur eggs are already sitting in museum collections. In this video, we explore how scientists identified an unborn tyrannosaur from a single claw, how large these predators were before hatching, what their eggs may have looked like, and why the earliest stage of tyrannosaur life remained hidden for so long. #AncientCanada #CanadaHistory #Dinosaurs #PrehistoricCanada #Paleontology ⚠️ Some visuals are illustrative. Certain materials may be used under Fair Use for commentary and educational purposes.