GLY1102 Topic 29

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