Extinct Reptiles Notes

Multiple Choice

What was the name of the supercontinent that existed before the continents split apart?

• Pangaea

• Eurasia

• Gondwana

• Laurasia

Ferns and Gymnosperms were the most common plants during the Mesozoic.
Examples of Gymnosperms during that time: cycads, ginko, and conifers

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Plants of the Mesozoic

Multiple Choice

Which of the following is NOT a characteristic of the first dinosaurs?

• They could fly

• They were small (1-3 m)

• They were bipedal

• They did not swim

Match

Match the description to the dinosaur

• 400-800 teeth

• Small arms

• Long neck and tail

Triceratops

T Rex

Brachiosaurus

• Triceratops

• T Rex

• Brachiosaurus

Multiple Choice

Which feature distinguishes stegosaurs from ankylosaurs?

• Stegosaurs have two rows of bony plates on their back.

• Ankylosaurs have spikes on their tail.

• Stegosaurs have armor scutes over their whole body.

• Ankylosaurs have much longer hindlimbs than forelimbs.

Multiple Choice

What is the primary function of the crests on the heads of hadrosaurs?

• Resonating chamber for sound

• Defense against predators

• Attracting mates

• Storing food

Multiple Select

Which of the following are suggested by the discovery of several hadrosaur nests and juvenile skeletons found in their vicinity?

• Communal nesting

• Parental care

• Solitary behavior

• No parental involvement

Multiple Choice

Which feature is found in both mosasaurs and ichthyosaurs?

• Hyperphalangy

• Feathers

• Long necks

• Beaks

Multiple Choice

Which of the following is a distinctive feature of plesiosauroids?

• Limbs form flippers

• Wings supported by elongated digit 4

• Feathers covering the body

• Hollow bones with internal struts

Multiple Select

Which of the following are the three main body shapes found in plesiosauroid diversity?

• Primitive (medium head, medium neck)

• Elasmosaurid (tiny head, long neck)

• Pliosauroidea (large head, short neck)

• Theropod (large claws, bipedal)

Multiple Choice

What adaptation helped pterodactyloids achieve better flight?

• Shorter tail

• Longer neck

• Larger teeth

• Heavier bones