GLY1102 Topic 27, GLY1102 Topic 28, GLY1102 Topic 29

question

False
answer

Although some fossilized dinosaur organs have been recovered, none of these is of a heart.
question

True
answer

Bacterial infection from bites and scratches may have been lethal to dinosaurs.
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True
answer

Three-dimensional vision occurs because each eye sees an object at a slightly different angle, therefore, projecting a slightly different image on the retina.
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True
answer

In rare cases, internal organs may be represented as fossil molds or casts, even more rarely they are mineralized.
question

True
answer

Allosaurus and Carcharadontosaurus had binocular fields of vision half as wide and more similar to modern alligators. These dinosaurs may have ben ambush predators.
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True
answer

Dinosaurs developed tumors, had arthritis, and suffered from diffuse idiopathic skeletal hyperostosis (DISH).
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True
answer

The blood pressure required to pump blood from the heart to the head is a function of the distance and elevation of the head form the heart.
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Scipionyx
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A hatchling of this dinosaur was found in Italy with fossilized traces of muscles, large intestines, windpipe, and a liver spot.
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True
answer

Binocular vision occurs where the two monocular fields of view overlap and it is within the binocular range that an animal experiences depth perception.
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True
answer

All animals have different monocular and binocular ranges of vision.
question

False
answer

Active predators tend to have a narrower range of depth perception than scavengers or ambush predators.
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False
answer

Animals with a wide range of depth perception are more often ambush predators, lying in wait until their prey comes close and within their range of depth perception.
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True
answer

A mature Brachiosaurus may have held its head 43 feet (13m) above the ground, more than twice the height of a giraffe.
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True
answer

An infection of the toe on the right food of \”Big Al\” the Allosaurus contributed to his death.
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True
answer

The crest of a lambeosaurines is hollow with a complex series of tubes inside, connecting to the nose and throats.
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True
answer

Psittacosaurus is the basal member of the ceratopsian clade and the only member of the Psittacosauridae.
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True
answer

Protoceratops bears the distinction of being one of the first dinosaurs for which specimens were found of a range ages, probably of each sex.
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False
answer

Ceratopsians do not display sexual dimorphism.
question

False
answer

Triceratops was the smallest of all ceratopsians.
question

True
answer

Pentaceratops has five significant horns—two horns are forward pointing over the orbits, another a nasal horn, and two protruding cheekbone horns.
question

True
answer

Centrosaurus has two large frill openings (pariental fenestra) with a parietal strut dividing them.
question

False
answer

The Ceratopsidae are all large, habitually bipedal, with very large skulls, large nostrils, very prominent frills, and a variety of horns.
question

True
answer

As is the case with the Psittacosauridae, the Protoceratopsidae have no nasal or post-orbital horns, just a thickened bump in front of the orbit.
question

True
answer

Ceratopsians were very social animals, some traveling in large groups or herds of 1000 or more individuals.
question

False
answer

The Neoceatopsia were obligate bipedals.
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True
answer

Ceratopsians became very abundant in the Late Cretaceous, especially in North America.
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False
answer

All ceratopsians had horns on their skull.
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True
answer

Ceratopsians are ornithischian dinosaurs and are closely related to ornithopods, both being plant-eating ornithischians.
question

False
answer

Protoceratops has no horns (nasal or post-orbital) and the nostrils are much larger than the Ceratopsidae.
question

True
answer

The frill is a shelf of bone projecting from the back of the skull.
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True
answer

The Neoceratopsia is comprised of two families, the smaller Protoceratopsidae and the Ceratopsidae.
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Marginocephalia
answer

A bony shelf on the back of the skull unites this group called the ______.
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Epoccipitals
answer

The margins of some ceratopsian frills had extra bones called ______.
question

True
answer

The Ceratopsia (\”horned faces\”) includes a relatively large group of some 20 genera, mostly from upper cretaceous of North America.
question

True
answer

Pachyrhinosaurus is a memorable ceratopsian of about 6m in length, with a short beak, and a low face with masses of very roughened bone that extend the length of the snout from the nose to eyes.
question

True
answer

Whereas Psittacosaurus has only a small rudimentary frill, the Protoceratopsidae display a much larger bony frill that extended back over the neck.
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False
answer

All ceratopsians had a relatively large frill.
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True
answer

Chasmosaurus has two very large openings (parietal fenestra) in the frill.
question

False
answer

While the Protoceratopsidae were bipedal, the Psittacosaurus were clearly an obligate quadrupedal.
question

False
answer

Centrosaurus has six long, bony spikes sticking out fanwise from the back of its frill.
question

Pachycephalosaurus
answer

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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North America and Asia
answer

Most Pachycephalosaurs lived during the Late Cretaceous in ____
question

False
answer

The Homalocephalidae were the largest pachycephalosaurs
question

True
answer

Pachycephalosaurs were all bipedal
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Quadrapedal
answer

Which of the following pachycephalosaur characteristics is false?
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Early Cretaceous
answer

Pachycephalosaurs first evolved during the _____.
question

Thick-headed
answer

The name \”Pachycephalosauria\” means ____.
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True
answer

All known pachycephalsaurs are from the Northern Hemisphere.
question

False
answer

Pachycephalosauridae have a flat skull roof.
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False
answer

Running, Stegoceras would have had its back almost perpendicular with the ground requiring the tail to act as a counterbalance.
question

False
answer

The Homalocephalidae family is more diverse than the Pachycephalosauridae.
question

Skull roof characteristics
answer

The Pachycephalosauria are divided into two families based upon their ____.
question

True
answer

Pachycephalosaurs were all herbivores.
question

True
answer

Unlike Stegoceras, Pachycephalosaurus has very prominent bony spikes projecting from the snout.
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True
answer

Homalocephale from Mongolia had a relatively flat skull roof.

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