Albertosaurus Fossil Skeleton Jigsaw Puzzle by Millard H. Sharp - Pixels
Royal Tyrrell Museum of Palaeontology på Twitter: "Albertosaurus hatchlings grew quickly. Fossil evidence suggests the youngest individual known is a two-year-old that weighed about 50 kg. Albertosaurus reached adulthood at about 18
File:Albertosaurus at Science Center of Iowa.jpg - Wikimedia Commons