GLY1102 Topic 24, GLY1102 Topic 25, GLY1102 Topic 26

False
Stegosaurus has never been found buried in the same deposit as Allosaurus.
True
The pairs of terminal tail spines and the pointed parascapular spines in other stegosaurus seem to have been the main means of defense.
True
Scutellosaurus is considered a primitive thyreophoran partially because it has a large number of keeled osteoscutes.
True
Stegosaurus had osteoderms/osteocutes covering portions of its neck.
True
Kentrosaurus has a large hollow in two sacral vertebrae that has been mistakenly interpreted as the location of a second brain.
Scutellosaurus
Which of the following is considered to represent the base of the thyreophoran family tree?
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True
The Thyreophora is a clade of ornithischian dinosaurs.
Stegosauria
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.
False
The Stegosauria have been found only in North America.
Kentrosaurus
The only Stegosaur to have remains indicating some herding behavior is ____.
False
The osteoscutes of stegosaurus were attached directly to the skeleton fixing them rigidly in place.
It has a high skull
Which statement about Stegosaurus is false?
Huayangosaurus
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.
False
The plates of Stegosaurus are aligned in a single row along the midline.
False
Stegosaurs first appeared during Late Jurassic.
False
None of the Stegosauridae family have plate-like osteoderms across the back, sacrum, and tail.
Scutellosaurus
Which of these Stegosauria is the smallest?
False
Huayangosaurus had osteoscutes that were embedded in the skin, forming rows from the head to the tail, arranged primarily on the upper flanks.
True
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.
The stegosaurs
Which of the following groups represented the fewest number of species?
False
Mymoorapelta resembles a comination between an Ankylosaurus and Nodosaurus.
True
Most ankylosaurus weighed 3000 to 4000 kg.
True
Polacanthids are medium to large (e.g. Gastonia), and occurred primarily in the Upper Jurassic and Lower Cretaceous of Europe and North America.
False
Ankylosaurs were small-to-relatively large, bipedal, carnivorous, ornithischian dinosaurs.
They have a tail club, fused sacral armor covers the hips.
Which of the following about the Polacanthidae is false?
False
Only the fenestrae and ankylosaurs were unarmored.
True
The oldest ankylosaurs come from the Middle Jurassic and survived to the end fo the Cretaceous.
True
Nodosaurus is about 5.5 m long and the entire body was covered by bony plates that formed a thick continuous covering over the torso.
True
Ankylosaurus were quadrupeds with a lowly held head, indicating that they were low browsers.
True
Panoplosaurus lacks tall spines as part of its armor but has a relatively wide skull.
False
Ankylosaurs have batteries of teeth that form large rasping surfaces.
True
Ankylosaurus and Euoplocephalus are members of a North America calde of anklosaurs.
False
Panoplosaurus was the first ankylosaur to be described from North America.
Nodosauridae
The skulls of this family of ankylosaurs are narrow (pear-shaped form above), longer than the width and lacks horns of the rear corners.
True
Ankylosaurids exhibit differences in their beaks, in some the beak is scoop-shaped and relatively narrow but in others the beak is broad.
True
The Ankylosauridae, or ankylosaurids, are armored dinosaurs having a large club fo bone on the end of the tail.
Polacanthidae
Gastonia, the “walking hedge of thorns,” is a member of this family of ankylosaurs.
False
All the tail vertebrae of the Ankloysaurus tail were fused together stiffening the entire tial.
False
Ankylosaurs have a large, armored head and a relatively long, thick neck.
True
The differences in the width of an ankylosaurid beaks may be related to differences in the types of foliage and fruit in their diets.
True
The Linnaean system of nomenclature provides a uniform language of communication for scientists to refer to the same object or species.
True
Dinosaur tracks and trackways demonstrate that dinosaurs were diagonal walkers, meaning there is an angle between the mid-line of travel and successive right and left footprints.
False
The term gastrolith refers to fossilized fecal material.
True
The initial step in measuring dinosaurs tracks and trackways is to measure the size and shape of individual fore (manus) and hind (pes) footprints and the angles and distances between them.
True
Quadruped tracks generally reveal differences in the size and shape of rear and front prints.
Tetradactyl
The term ____ refers to those tracks with four digits.
True
The largest of the front prints of sauropods are more than a meter long and deep as a bathtub.
False
Among the important measurements taken at trackways is the depth of the impression.
True
Tracks of stegosaurs are extremely rare which suggests that stegosaurs were probably upland or dryland animals, rarely near wetland areas where tracks are preserved.
True
Dinosaur tracks are best preserved in sediment that was moist but not too moist.
Antarctica
Dinosaur tracks have been found on all continents, except ______.
False
Quadruped tracks are the most common type of dinosaur tracks, suggesting that most dinosaurs walked on four legs.
Dinosaur stomping grounds
In some places bedding planes are completely covered with dinosaur tracks. They most often seem to occur around watering holes but may also be developed along migratory paths. These types of track occurrences are called ______.
True
Theropod tracks generally have relatively long and narrow digit impressions, each digit ending with sharp, slender claw marks.
False
Coprolites are trace fossils representing stones that were swallowed to assist in the digestion of food.
True
Dinosaurs did not drag their tail or belly, indicating they walked upright with their limbs directly (or nearly so) under their body.
False
The heel of tridactyl theropod tracks is more rounded than the hell of tridactyl hadrosaurs tracks.
Trackway
More than one consecutive dinosaur track is a ______.
5
The term “pentadactyl” refers to a foot or hand with how many digits?
False
The stride refers to the distance between successive steps, for example, the distance between the step of your right foot and your next step of the left foot.