Dinosaurs!

Question 1

Marine Reptiles

Answer 1

• plesiosaurs
• ichthyosaurs
• first appear in the Triassic Period

Question 2

What does an Ichthyosaur look like?

Answer 2

sort of like a dolphin but has a vertical tail fluke

Question 3

Giant Sauropods

Answer 3

big ass dinosaur, like HUGE

• may have traveled in herds to protect the young against large predators (they traveled on the inside and the older, bigger ones traveled on the outside)

Question 4

What do fossil trackways tell us about dinosaur social structure?

Answer 4

suggests the herd-like behavior among sauropods

• traveling in herds to protect the young against predators

Question 5

What is Allosaurus?

Answer 5

• a big carnivorous dinosaur

- main predator during the Jurassic

Question 6

Two major divisions of dinosaurs

Answer 6

• based on pubis bone
• Ornithischia: pubis bone rotated backwards (bird hipped)
• saurischia: pointing forward (lizard hipped)

Question 7

Solenhofen Limestone

Answer 7

discovery of a “feather bird” in the deposit

Question 8

What morphological features of Archaeopteryx are more bird like?

Answer 8

• have a wish bone (Furcula wish bone)
• feathers
• crescent shaped wrist bone

Question 9

Cretaceous Dinosaurs

Answer 9

Tyrannosaurus Rex
Velociraptors
Hadrosaurs (duck-billed dinosaurs)
Ceratopsians (horned dinos)

Question 10

Quetzacoatlus

Answer 10

Pterosaur (flying reptiles)

• largest animal to have flown

Question 11

Mosasaurs

Answer 11

large, carnivorous marine reptile

• main predator of the Cretaceous seas