Early Echinoderms (?) | ||||||
−570 — – −565 — – −560 — – −555 — – −550 — – −545 — – −540 — – −535 — – −530 — – −525 — – −520 — – −515 — – −510 — – −505 — – −500 — – −495 — – | Ter Se. 2 Miao Fur | |||||
Axis scale: millions of years ago. | ||||||
Early Echinoderms (?) | ||||||
−570 — – −565 — – −560 — – −555 — – −550 — – −545 — – −540 — – −535 — – −530 — – −525 — – −520 — – −515 — – −510 — – −505 — – −500 — – −495 — – | Ter Se. 2 Miao Fur | Arkarua (approx.) Helicoplacus (approx.) Cambrian explosion (approx.) | ||||
Axis scale: millions of years ago. | ||||||