True-False

Most dinosaurs were carnivores.

Most dinosaurs were carnivores.

The rise of flowering seed plants might have been aided by the selective advantage given to fast growing plants by dinosaurs, particularly sauropods, hadrosaurids, and ceratopsians.

Dinosaurs, particularly sauropods, hadrosaurids, and ceratopsians, might have played an important role in the rise of flowering seed plants by giving a selective advantage to fast growing plants.

Ziphodont (serrated and curved posteriorally) teeth are a plesiomorphic (ancestral) trait of theropods.

One plesiomorphic (ancestral) trait of theropods is their ziphodont (serrated and curved posteriorally) teeth.

Ziphodont (serrated and curved posteriorally) tooth at the front of the room is a plesiomorphic (ancestral) trait of theropods and this one belongs to Tyrannosaurus rex.

One plesiomorphic (ancestral) trait of theropods is their ziphodont (serrated and curved posteriorally) teeth, and one such tooth belonging to Tyrannosaurus rex is located at the front of the room.

Tyrannosaurid bites might have led to fatal infections because of septic bacterial cultures growing on putrefying flesh trapped in the cellae between the serrations of their teeth, like those of Komodo Dragons in Indonesia.

Like those of Komodo Dragons in Indonesia, tyrannosaurid bites might have led to fatal infections because of septic bacterial cultures growing on putrefying flesh trapped in the cellae between the serrations of their teeth.

All theropods were strict carnivores, only eating the flesh of other dinosaurs.

Some theropods, like Spinosaurs, ate fish, while others, like Oviraptorids and Ornithomimosaurs, were omnivorous, or ate insects or eggs.

Some theropods, like Oviraptorids and Ornithomimosaurs, were omnivorous, or ate insects or eggs, while others, like Spinosaurs, ate fish.

Most of the examples of toothmarks attributable to specific dinosaurs listed by your text involve Edmontosaurus, a hadrosaurid.

Edmontosaurus, a hadrosaurid, is involved with most of the examples of toothmarks attributable to specific dinosaurs listed by your text.

Often due to loss during life, as a result of feeding, dinosaur teeth are more commonly found separate from their jaws.

Dinosaur teeth are more commonly found separate from their jaws, often due to loss during life, as a result of feeding.

Anaerobic bacteria and specialized organs often aided in dinosaur digestion.

Dinosaur digestion often was aided by anaerobic bacteria and specialized organs.

Both major clades of saurischians (sauropodomorphs and theropods) have well-supported evidence that they had gastroliths.

There is well-supported evidence that both major clades of saurischians (sauropodomorphs and theropods) had gastroliths.

Coprolites are body fossils.

An example of a body fossil is a coprolite.

A Late Cretaceous hadrosaurid coprolite has dung beetle trace fossils.

Dung beetle trace fossils have been found in a Late Cretaceous hadrosaurid coprolite.

Rapid phosphatization increases the chance of preservation, especially for theropod coprolites, which contain bone or tooth dahllite that serves as nucleation sites for phosphatization.

Theropod coprolites, which contain bone or tooth dahllite that serves as nucleation sites for phosphatization, may experience rapid phosphatization that increases the chance of their preservation.

In the video “THE DINOSAURS: The Nature of the Beast (Part 4),” it is stated that among dinosaurs, meat-eaters outnumbered plant-eaters 20 to 1.

Among dinosaurs, meat-eaters outnumbered plant-eaters 20 to 1 according to the video “THE DINOSAURS: The Nature of the Beast (Part 4).”

Multiple Choice

Which dinosaur clade had dental batteries?

A. Ceratopsia B. Ornithopoda C. Sauropoda D. Theropoda E. both A. and B.

Dental batteries characterized which dinosaur clade?

A. Theropoda B. Ceratopsia C. Ornithopoda D. both B. and C. E. Sauropoda

Which of the following rocks would make good gastroliths?

A. Limestone B. Shale C. Chert D. Quartzite E. both C. and D.

Good gastroliths would be made by which of the following rocks?

A. Quartzite B. Chert C. both A. and B. D. Limestone E. Shale

____________________ was cannibalistic.

A. Coelophysis B. Oviraptor C. Maiasaura D. both B. and C. E. all of these

A. Oviraptor B. Maiasaura C. both A. and B. D. Coelophysis E. all of these

Fill in the Blank

Dr. David Gillette and his colleagues named the astonishing skeleton (at 150 feet long compared to the 87 feet of Diplodocus)

that they found ____________________________________, for earth shaker.

____________________________________, for earth shaker, was the name that Dr. David Gillette and his colleagues named the astonishing skeleton (at 150 feet long compared to the 87 feet of Diplodocus) that they found.