BSC-1005 Lecture Notes - Lecture 16: Megalosaurus, Robert T. Bakker, Uranium-235
Document Summary
Paleontologist someone who studies any aspect of ancient organisms. Paleobiology study of the lives of ancient organisms. 1676 found giant thighbone (thought of as scrotum humanum) 1770 cuvier found mosasaurus (irst ime europeans thought exincion can occur) Richard owen named a group dinosaurs : fearfully great repiles 1842. Tell them apart by hip structure: ornithischians (like birds) or saursichians (like lizards) Robert bakker convinced people that all dinosaurs were like mammals. Dinosaurs lived 238 million years ago unil 65. 5 million years ago. Uranium 235 and lead used to date dinosaurs. World was warmer back in the day. Plate tectonics coninents moved, dinosaurs helped us igure out how it moved. Giant crocodile had biing force of 18,000lbs (modern day record is 3,700lbs) Fossils: any remains of ancient life o o. Trace fossils: non-skeleton fossils (tracks, eggs, bite marks, poop, etc. ) Revealed that dinosaurs did not drag their tails. Badlands (places where plants don"t grow well): where we look for dinosaurs.
