GLY 135 Dinosaurs - GLY135 17:55 Dinosaurs Intro...

Info icon This preview shows pages 1–4. Sign up to view the full content.

GLY 135 17:55 Dinosaurs Intro Debate on nature of dinosaurs: Slow, stupid, lumbering? Bakker- Active, smart, warm-blooded? Classification of Dinosaurs- Based on hip structure Saurischian- Reptile hips Theropods (Carivores) Sauropods (Big Necks) Ornithischians- Bird hips Diverse Herbivores Theropods- Carnivores Oldest dinosaurs   Triassic theropods from Argentina Eoraptor (Skull 3”) Herrerasaurus (Length 10-20’) Oldest North American dinosaur   Coelophysis (8’, 45 lbs) Cannibal? Probably are not in recent study Allosaurs- Jurassic Period (30-35’ long) Parental care in “Allosaur nurseries” Parents brought food (Sauropod bones nibbled by juvenile allosaurs) Coelurosaur Dromaeosaur- medium sized active hunters Velociraptor and Deinonychus Hunted in packs Many with feathers (colors known from melanosomes- brown, black, reddish brown)
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Function for insulation (if warm-blooded) or display (flight later) Dromaeosaurs ancestral to birds Oviraptors (“egg thief”) Originally thought to be eating Protoceratops eggs Now known to have been brooding their nests (males) Ornithomimids (“bird mimics”) Large eyes, brains, long fingers, no teeth, fast runners Gastroliths in stomach, teenagers roamed in herds Tyrannosaurids Early ones small (10’ long) T. Rex > 40’ long 6-8 tons Tiny arms (due to allometry change in shape with size increase) Slow? Yes, computer modeling indicates that too much of its mass would have to have been in its legs (based on scaling chicken to 13,000 lbs.) 17:55 17:55...
View Full Document

  • Spring '14
  • PatriciaKelley
  • Tyrannosaurus, Tyrannosauroidea, theropods, Allosaur nurseries

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern