| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| Squamata, rhynchocephalia, crocdilia & chelonia are the 4 living orders of these animals | reptiles | $400 | J | ANIMALS | 1991-09-23 | #1621 | |
| The rare tuatara is the only living member of an entire order of this class of vertebrates | reptiles | $1,000 | DJ | THE ANIMAL KINGDOM | 1990-07-04 | #1363 | |
| About 180 million years ago, mammals evolved from this class, named from Latin for "creeping" | reptiles | $600 | DJ | MAMMALS | 1987-04-22 | #618 |