GLY1102 Topic 24
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Stegosaurus has never been found buried in the same deposit as Allosaurus.
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False
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The pairs of terminal tail spines and the pointed parascapular spines in other stegosaurus seem to have been the main means of defense.
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True
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Scutellosaurus is considered a primitive thyreophoran partially because it has a large number of keeled osteoscutes.
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True
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Stegosaurus had osteoderms/osteocutes covering portions of its neck.
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True
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Kentrosaurus has a large hollow in two sacral vertebrae that has been mistakenly interpreted as the location of a second brain.
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True
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Which of the following is considered to represent the base of the thyreophoran family tree?
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Scutellosaurus
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The Thyreophora is a clade of ornithischian dinosaurs.
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True
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The ____ have one or more rows of armored plates (or osteoscutes) set in the skin above or along the vertebral column and a post-orbital process of the jugal bone expanded transversely.
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Stegosauria
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The Stegosauria have been found only in North America.
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False
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The only Stegosaur to have remains indicating some herding behavior is ____.
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Kentrosaurus
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The osteoscutes of stegosaurus were attached directly to the skeleton fixing them rigidly in place.
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False
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Which statement about Stegosaurus is false?
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It has a high skull
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This Asian stegosaur is the type of genus of the family bearing its name and has a spike-shaped armor along the body midline and rows of armor plates along each side of the spike row.
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Huayangosaurus
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The plates of Stegosaurus are aligned in a single row along the midline.
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False
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Stegosaurs first appeared during Late Jurassic.
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False
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None of the Stegosauridae family have plate-like osteoderms across the back, sacrum, and tail.
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False
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Which of these Stegosauria is the smallest?
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Scutellosaurus
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Huayangosaurus had osteoscutes that were embedded in the skin, forming rows from the head to the tail, arranged primarily on the upper flanks.
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False
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Scutellosaurus and Scelidosaurus are primitive thyreophora from the Lower Jurassic possessing parallel rows of keeled dermal armor scutes along the back surface of the body.
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True
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Which of the following groups did the fewest number of species represent?
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The stegosaurs
