2.5 Inch Tyrannosaurus Rex Serrated Tooth Necklace Pendant Ankylosaurus First discovered by anthropologist Mary

First discovered by anthropologist Mary Leakey on July 17

The Order Crocodilia has existed for about 200 million years

It is thought that humans evolved from arboreal primates similar to lemurs

The earliest fossils so far discovered come from Upper Carboniferous (Pennsylvanian) sediments in Europe formed about 325 million years ago

2.5 Inch Tyrannosaurus Rex Serrated Tooth Necklace Pendant Ankylosaurus First discovered by anthropologist MaryLike many carnivores dinosaurs T rex often broke or shed its teeth while feeding. Over time a new tooth would grow from the old tooth socket. Thus T rex had a variety of sizes of teeth, from only 1 inch above the gum line to 11 inches including the root. T rex was up to 18. 5 feet tall, 50 feet long, & weighed up to 6 tons. They were the dominant predator of the Cretaceous Age which ended about 65 million years ago. Note the fine serrations. The tooth