The Ancient Mesosaurus

Multiple Choice Question
Where have Mesosaurus fossils been found?

• North America and Europe

• South America and Africa

• Asia and Australia

• Antarctica and India

Tags

NGSS.MS-LS4-1

Multiple Choice Question

What does the name “Mesosaurus” mean?

• Water lizard

• Middle lizard

• Ancient lizard

• Small crocodile

About how long ago did Mesosaurus first live?

• 100 million years ago

• 200 million years ago

• 300 million years ago

• 500 million years ago

Tags

NGSS.MS-LS4-1

Multiple Choice Question

What feature helped Mesosaurus breathe while staying partly underwater?

• Gills on their sides

• Webbed feet

• High nostrils

• Long tails

Why couldn’t Mesosaurus have swum across the Atlantic Ocean?

• They lived only on land

• They were too small

• Their bodies weren’t built for long-distance swimming

• They didn’t have lungs

Tags

NGSS.MS-LS4-2

True or False

Mesosaurus grew to about 1 meter (3.3 feet) long.

• True

• False

True or False
Mesosaurus got their oxygen from gills in the water.

• True

• False

True or False
The fossils of Mesosaurus help scientists learn about Earth’s past.

• True

• False

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-ESS2-3

Fill in the Blanks
Mesosaurus were among the first reptiles to live in and around __________.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Fill in the Blanks
The Mesosaurus species went extinct about __________ million years ago.

Tags

NGSS.MS-LS4-1