Pictured: Prehistoric sea monster skull unearthed in US desert

A prehistoric sea monster has been found in Nevada’s Black Rock Desert… one of the driest places on Earth. 

The gigantic creature lived 244 million years ago when the US was covered by a vast ocean.

It was at least 18 metres (60ft) from nose to tail and weighed more than 40 tonnes – rivalling today’s biggest whales. 

Named Cymbospondylus youngorum, it belonged to a group of aquatic reptiles known as ichthyosaurs.

Ichthyosaurs thrived during much of the Mesozoic era: based on fossil evidence, they first appeared around 250 million years ago and at least one species survived until about 90 million years ago.

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