MiniAssignment2_NicholasH

Table 1: The times of first appearance (FAD) and last appearance (LAD) for some groups of dinosaurs. Use this chart to answer the questions below. Group Earliest Geologic Period Earliest Geologic Age FAD (Ma) Latest Geologic Period Latest Geologic Age LAD (Ma) Stegosauria Jurassic Callovian 166 Cretaceous Coniacian 86 Ornithopoda Jurassic Sinemurian 199 Cretaceous Maastrichtian 66 Ankylosauria Jurassic Callovian 166 Cretaceous Maastrichtian 66 Ceratopsia Jurassic Tithonian 152 Cretaceous Maastrichtian 66 Pachycephalosauria Jurassic Tithonian 152 Cretaceous Maastrichtian 66 Sauropoda Triassic Carnian 237 Cretaceous Maastrichtian 66 Theropoda Triassic Landianian 242 Cretaceous Maastrichtian 66 Utahraptor (genus) Cretaceous Hautervian 130 Cretaceous Barremian 125 Tyrannosaurus (genus) Cretaceous Maastrichtian 68 Cretaceous Maastrichtian 66 Triceratops (genus) Cretaceous Maastrichtian 68 Cretaceous Maastrichtian 66 Iguanodon (genus) Cretaceous Barremian 126 Cretaceous Aptian 122 1. If you found a deposit containing specimens of BOTH Stegosauria and Ornithopoda, what is the potential age range (maximum and minimum age in millions of years, Ma) of that deposit? 166-86 2. If you found a deposit containing specimens of Pachycephalosauria AND Sauropoda, what is the oldest possible age (in millions of years) of that deposit? 152 3. If you found both Utahraptor and Iguandon in the same deposit, what is the potential age range (maximum and minimum age, in millions of years) of that deposit? 126ma-125ma 4. In a popular film, Utahraptor and Tyrannosaurus have a scene together. Would this have been possible in the real world? Provide your evidence and explain your reasoning. No, because the times in which both species were alive do not intersect. 5. In an even older popular animated film, Triceratops co-stars with a sauropod. Would this have been possible in the real world? Provide your evidence and explain your reasoning.