| Answer | Crossword Clue |
|---|---|
| ERA | Paleozoic, for one |
| ERA | Paleozoic, for one. |
| ERA | Paleozoic for one |
| ERA | The Paleozoic, for one |
| ERA | Paleozoic, for example. |
| ERA | Paleozoic, for example |
| ERAS | Mesozoic and Paleozoic, for two |
| ERAS | Paleozoic and Mesozoic, for two |
| silurian | noting or pertaining to a period of the Paleozoic Era, occurring from 425 to 405 million years ago, notable for the advent of air-breathing animals and terrestrial plants |
