Template:Early Echinoderms graphical timeline

Early Echinoderms (?)

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Ediacaran

Cambrian

Ter

Se. 2

Miao

Fur

Arkarua
(approx.)

Helicoplacus
(approx.)

Tribrachidium

Cambrian explosion
(approx.)

Neoproterozoic
(last era of the Precambrian)

Palæozoic
(first era of the Phanerozoic)

Axis scale: millions of years ago.

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