ERTH 2401 Lecture Notes - Lecture 12: Ouranosaurus, Ornithopod, Intraspecific Competition
25 Oct 2016
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Document Summary
Leaellynasaura quite brainy and acute vison (basal ornithopoda) Smarts may be related to sight, smell and hearing for protection may have been their only defence. The chambers in the crest of hadrosaurids may have been used to produce sounds . Lumps on forehead for ouranosaurus used for sophisticated social techniques loud low frequency sounds. Crests may have also played a role in intraspecific completion e. g. sexual dimorphism. Many hypotheses about the function of the crests all about sexual dimorphism. Other ornithopods have low broad bumps on top of the head (ouranosaurus) and. In lambeosaurine (hollow crested) hadrosaurids used for instant recognition arched snout (muttaburrasaurus) intraspecific competition. Ouranosaurus had long neural spines may have been used in thermoregulation too warm or cool an animal or maybe just a display function. Monotypic bone beds of just one animal are currently known for dryosaurus, Hadrosaurids could have had 10,000 in a herd.
