gly 1102 topic 23

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The crests of lambeosaurines varied in species according to age and sex.
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true
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Saurolophus and Prosaurolophus are two examples of members of the Hadrosaurinae which includes those hadrosaurids with a fairly flat skull roof or head crest of solid bone.
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true
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What is false about hadrosaurs?
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They have a single row of large teeth on each side of the jaw. (True: They have elongated external nostrils. Some digits had hoof-like pads. They have toothless beaks.)
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hadrosaur named after a Canadian city
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Edmontosaurus
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Ossified or bony tendons in the tails of many ornithopods served to
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stiffen the tail.
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All ornithopods were qudrupedal.
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false
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The so-called duck-billed hadrosaurs were restricted to the Jurassic Period.
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false
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The Iguanoodontia have closely packed batteries of teeth.
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true
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Ornithopods are not known to have been herding animals.
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false
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Hadrosaurs may have had inflatable air sacs over the flat dorsal portion of the skull surrounding the external nostrils.
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true
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Lambeosaurus was a large, duck-billed dinosaur with a bony head crest shaped like a hatchet.
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true
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Hadrosaurs are differentiated into 2 subfamilies based upon their skull characteristics, the flat-roofed or solid crested Hadrosaurinae and the hollow-crested Lambeosaurinae.
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true
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Ornithopods were incredibly diverse and distributed throughout the world.
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true
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Othniela, a small member of the Hypsilophodontidae family of ornithopods, was named in honor of a famous dinosaur paleotologist, being named for the first name of
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Marsh.
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This genus from the large Euornithopoda clade was bipedal, only 2-5 meters long, and exhibited the specialized chewing arrangement of more advanced ornithopods.
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hypsilophodon
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This genus of ornithopods is the type genus of an early family and clade of ornithopods and derives its name from the fact that it has different types of teeth.
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heterodontosaurus
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Dinosaur with batteries of large numbers of teeth organized into large rasping surfaces
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hadrosauridae
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False about Iguanodontia
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They had small external nostrils. (True: They have hoof-like tips on their toes. They were robustly built. They have heavy shoulders and forelimbs. They lack premaxillary teeth.)
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This member of the Iguanodontia is intermediate in size between Dryosaurus and Iguanodon.
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Camptosaurus
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Computer simulations have been made of the sound once produced by the long hollow crest of this hadrosaur.
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parasaurolophus

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