gly 1102 topic 25
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Polacanthids are medium to large (e. g. Gastonia), and occurred primarily in the Upper Jurassic and Lower Cretaceous of Europe and North America.
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True
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Gastonia, the \"walking hedge of thorns,\" is a member of this family of ankylosaurs.
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Polacanthidae
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Ankylosaurs have a large, armored head and a relatively long, thick neck.
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False
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All the tail vertebrae of the Ankylosaurus tail were fused together stiffening the entire tail.
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False
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Ankylosaurs have batteries of teeth that form large rasping surfaces.
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False
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Nodosaurus was a 5.5 m long and the entire body was covered by bony plates that formed a thick, continous covering over the torso.
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true
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Mymoorapelta resembles a combination between an Ankylosaurus and Nodosaurus.
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False
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Ankylosaurus and Euoplocephalus are members of a North America clade of ankylosaurs.
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true
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The differences in the width of ankylosaurid beaks may be related to differences in the types of foliage and fruit in their diets.
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True
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Only the fenestrae of ankylosaurs were unarmored.
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False
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Panoplosaurus was the first ankylosaur to be describes from North America.
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False
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The skulls of this family of ankylosaurs are narrow (pear-shaped from above), longer than the width and lacks horns on the rear corners.
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Nodosauridae
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Most ankylosaurs weighed 3000 to 4000 kg.
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True
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Which if the following about Polacanthidae is false?
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They have a tail club, fused sacral armor covers the hips. (True: They have laterally projecting spikes along the neck. they have lateral shoulder spines. Fused sacral armor covers the hips.)
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