Browsing by Subject "Alligators and Crocodiles"

Now showing items 1-5 of 5

    • Evidence for a single loss of mineralized teeth in the common avian ancestor. 

      Meredith, Robert W; Zhang, Guojie; Gilbert, M Thomas P; Jarvis, Erich D; Springer, Mark S (Science, 2014-12-12)
      Edentulism, the absence of teeth, has evolved convergently among vertebrates, including birds, turtles, and several lineages of mammals. Instead of teeth, modern birds (Neornithes) use a horny beak (rhamphotheca) and a muscular ...

    • FoxP2 expression in avian vocal learners and non-learners. 

      Haesler, Sebastian; Wada, Kazuhiro; Nshdejan, A; Morrisey, Edward E; Lints, Thierry; Jarvis, Eric D; Scharff, Constance (J Neurosci, 2004-03-31)
      Most vertebrates communicate acoustically, but few, among them humans, dolphins and whales, bats, and three orders of birds, learn this trait. FOXP2 is the first gene linked to human speech and has been the target of positive ...

    • Olfactory Receptor Subgenomes Linked with Broad Ecological Adaptations in Sauropsida. 

      Khan, Imran; Yang, Zhikai; Maldonado, Emanuel; Li, Cai; Zhang, Guojie; Gilbert, M Thomas P; Jarvis, Erich D; ... (10 authors) (Mol Biol Evol, 2015-11)
      Olfactory receptors (ORs) govern a prime sensory function. Extant birds have distinct olfactory abilities, but the molecular mechanisms underlining diversification and specialization remain mostly unknown. We explored OR ...

    • Sequencing three crocodilian genomes to illuminate the evolution of archosaurs and amniotes. 

      St John, John A; Braun, Edward L; Isberg, Sally R; Miles, Lee G; Chong, Amanda Y; Gongora, Jaime; Dalzell, Pauline; ... (48 authors) (Genome Biol, 2012-01-31)
      The International Crocodilian Genomes Working Group (ICGWG) will sequence and assemble the American alligator (Alligator mississippiensis), saltwater crocodile (Crocodylus porosus) and Indian gharial (Gavialis gangeticus) ...

    • Three crocodilian genomes reveal ancestral patterns of evolution among archosaurs. 

      Green, Richard E; Braun, Edward L; Armstrong, Joel; Earl, Dent; Nguyen, Ngan; Hickey, Glenn; Vandewege, Michael W; ... (55 authors) (Science, 2014-12-12)
      To provide context for the diversification of archosaurs--the group that includes crocodilians, dinosaurs, and birds--we generated draft genomes of three crocodilians: Alligator mississippiensis (the American alligator), ...