GLY1102 Topic 29
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The thickened skull of ____ has led to speculation that males clashed heads with one another in competition for females during breeding season.
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Pachycephalosaurus
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Most Pachycephalosaurs lived during the Late Cretaceous in ____
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North America and Asia
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The Homalocephalidae were the largest pachycephalosaurs
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False
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Pachycephalosaurs were all bipedal
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True
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Which of the following pachycephalosaur characteristics is false?
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Quadrapedal
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Pachycephalosaurs first evolved during the _____.
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Early Cretaceous
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The name \"Pachycephalosauria\" means ____.
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Thick-headed
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All known pachycephalsaurs are from the Northern Hemisphere.
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True
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Pachycephalosauridae have a flat skull roof.
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False
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Running, Stegoceras would have had its back almost perpendicular with the ground requiring the tail to act as a counterbalance.
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False
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The Homalocephalidae family is more diverse than the Pachycephalosauridae.
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False
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The Pachycephalosauria are divided into two families based upon their ____.
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Skull roof characteristics
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The Homalocephalidae were the largest pachycephalosaurs.
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False
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Pachycephalosaurs were all herbivores.
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True
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Unlike Stegoceras, Pachycephalosaurus has very prominent bony spikes projecting from the snout.
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True
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Homalocephale from Mongolia had a relatively flat skull roof.
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True
