Ordovician-Silurian
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Ordovician-Silurian

Brontoscorpio

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Scorpions have existed in one form or another for over 400 million years.

Brontoscorpio was a meter long with a stinger the size of a lightbulb.

It was also just as comfortable on land as on the sea floor.

Cameroceras

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Grew to over 6 meters long.

Might be the ancestor of squids and octopi.