| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| First appearing in the Cambrian Period, these are the 3-lobed fossils of what were marine animals | trilobites DD | $5,000 | DJ | SCIENCE | 2022-01-12 | #8553 | |
| During the Cambrian period 500 mil. years ago, these "3-segment" arthropods thrived in the world's waters | trilobites | $2,000 | DJ | SCIENCE | 2017-06-14 | #7553 |