GEOL 008 Lecture Notes - Lecture 1: Therizinosaur, Euornithes, Gigantoraptor
Document Summary
Long slender tridactyl manus (three fingered hands) Two major clades: tyrannosauroidea (t-rex) tyrant lizard king , features. Incisor-like premaxillary teeth: very-slender metacarpals (hand, last groups of large bodies theropods to evolve/ end of cretaceous, synapomorphies: Thick maxillary and dentary teeth: wide skull. Therizinosauria: small skulls, elongate necks, large powerful claws (to protect themselves or to cut trees. They ate trees: famous therizinosauria, therizinosaurus to cut of lizard , have massive claws, almost the size of a t-rex. Alvarezsauria: not going to talk about this, oviraptorosauria, short boxy skulls (think parrot) , pennaceous feathers(off the legs or arms), brooding (taking care of the eggs/laying eggs, famous oviraptorosauria, oviraptor egg taker . This fossil was found on a pile of eggs: gigantoraptor giant taker . Eumaniraptora (the mighty chicken: true maniraptorans , only dinosaur group to evolve flight ( jump off a branch and flew, carnivores, omnivores, fish eaters, herbivores Range: mid to late cretaceous (mesozoic era, north/south america, europe, asia, africa,
