Bizarre sea beast with a circular mouth full of serrated teeth sparked a 'prehistoric arms race' 500 million years ago when it developed NIGHT VISION and became a vicious predator | WHAT REALLY HAPPENED

Bizarre sea beast with a circular mouth full of serrated teeth sparked a 'prehistoric arms race' 500 million years ago when it developed NIGHT VISION and became a vicious predator

A bizarre sea beast with a circular mouth full of serrated teeth triggered a prehistoric 'arms race' when it evolved eyes, new research has revealed.
Radiodonts stalked the oceans more than 500 million years ago and are one of the earliest animal types to emerge on planet Earth.

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