DINO TA LEAD REVIEW Ornithiscian First described herbivorous dinosaur picture of its tooth Iguanodon page 6 Giant crocodile that likely prey on unsuspecting dinosaurs picture Deinosuchus page 25 Debate about the plate arrangement on my back picture Stegosaurous page 35 When paleobiologists found my skull they thought it was a kneecap skull is thick and would have been good for 2 types of butting head butting flank butting Pachycephalosaurus page 51 Inspiration for the Greek Griffin Ceratopsian page 56 Can get up to 140 feet long a diplodocid Supersaurus Sauropod cannot fit into Ruby Diamond page 64 My skull can be confusing Oviraptor the mouth is on the right page 78 People to know U S President fossil fanatic Thomas Jefferson Credited w naming the first dinosaurs William Buckland Introduced concept of extinction George Cuvier Named dinosaurs Richard Owen Described dinosaurs as bipedal like kangaroos Joseph Leidy Discovered Dienonychus starting the renaissance John Ostrum Dinosaurs resembled mammals and birds after the renaissance Robert Bakker Dates numbers to know Extinction occurred 65 5 million years ago Dino Renaissance happened in 1964 Dinosaurs first showed up about 238 million years ago Use uranium 235 to date dinosaurs Tallest dinosaur is 56 feet Smallest dinosaur is 7 oz Bite force of crocodile 3700 pounds Spinosaurus was bombed in the museum during WWII Extinction theories Volcanism evidence Deccan Basalts in India also there were a lot of volcanoes during the time of the dinosaurs Drastic lowering of sea levels seaway sediment distributions Six mile wide asteroid there are rare materials iridium and osmium found in space rocks that were found the ash layers near that region Most popular theory We do not have an explanation as to why some animals survived birds mammals salamanders etc but others dinosaurs did not Things to know Closest place we can go to for dinosaurs is Georgia Found in sedimentary rocks Know it s a dinosaur by the three features 3 or more sacral vertebrae 3 main fingers perforated acetabulae Know the age of a dinosaur by the uranium 235 half life Know what kind of dinosaur by looking at the pubis bone page 12 No way to tell the sex of a dinosaur one example of a theory sexual dimorphism Dissipation of force in the skull we use computerized engineering technique finite element modeling Look at the endocasts to so the encephalization quotient EQ to predict how smart the dinosaur was Can tell the diet of the dinosaur coprolite Problem that paleontologists have w naming dinosaur oversplitting
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