| Sentit | From 425 million to 405 million years ago; first air-breathing animals. | |
|---|---|---|
| Espècimen de | període | A unit of geological time during which a system of rocks formed |
| Part de | Paleozoic | From 544 million to about 230 million years ago |
| Anglès | Silurian, Silurian period | |
| Espanyol | siluriano, silúrico | |
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