Question

3
the pterosaur was a flying reptile that lived millions of years ago. often referred to as pterodactyl or \wing finger, at least 60 different types existed. the wings of the pterosaur were thin membranes of skin, similar to the wings of bats, and extended along the sides of the body. some were no bigger than a sparrow while others were monsters with wingspans in excess of 40 feet!

Explanation:

The topic is clearly stated as the Pterosaur. The main idea is a general description of this flying reptile. The supporting details include its alternative names (Pterodactyl, "wing finger"), the number of types (at least 60), wing characteristics (thin skin membranes like bat wings, extending along body sides), and size variation (from sparrow - sized to over 40 - foot wingspan monsters).

Answer:

Topic: Pterosaur
Main Idea: A description of the Pterosaur, a flying reptile from millions of years ago.
Supporting Details:

• Also called Pterodactyl or "wing finger".
• At least 60 different types existed.
• Wings were thin skin membranes like bat wings, extending along body sides.
• Size variation: some as small as a sparrow, others with wingspans over 40 feet.