Visit the Smithsonian
Paleobiology Dept. website (linked to the BIOL 471 website), then
to the featured webpages on
Then be prepared to answer the following questions concerning the
phylogeny, biology and extinction of dinosaurs.
1.(2) What is a dinosaur? In what geologic period did dinosaurs
2.(2) What are archosaurs? What groups besides dinosaurs are derived
3.(2) What is the present number of recognized Mesozoic dinosaur
4.(2) What is the difference between ornithischian and saurischian
5.(2) What is the Alvarez theory for the extinction event at the end of the Cretaceous? What other theories have been proposed?