EARLY humans had rampant sex with Neanderthals and other primitive cousins in a world of debauchery, a new study has claimed.

Scientists from Temple University in Philadelphia labelled East Asians and Europeans as the most promiscuous.

2 Neanderthals, left, had rampant sex with early humans, scientists have discovered Credit: SWNS:South West News Service

And Artificial Intelligence analysis showed that East Asians have up to 20 per cent more Neanderthal DNA than their European counterparts, meaning they interbred the most.

Dr Joshua Schraiber, a co-author of the study, said: "I do think there was probably much more interbreeding than we initially suspected.

"My guess is that any time two different human groups lived in the same place at the same time for a while, they probably had some sort of breeding contact."

A human skull found in Romania, said to be approximately 38,000 years old had "recent" Neanderthal ancestry.

2 Researchers found that interbreeding happened on a number of occasions as our ancestors began to pour out of Africa Credit: SWNS:South West News Service

This backs up previous claims that humans "hybridised" with Neanderthals when they left Africa, over at least a period of 35,000 years.

Around this time, Neanderthals are said to have occupied a vast area of Asia and Europe - so there would have been plenty of opportunities to fraternise.

But the researchers were unable to establish why the Chinese and other East Asians have more Neanderthal blood.

Dr Mafessoni said: "The presence of Neanderthal DNA fragments in the genomes of modern humans from Europe and East Asia indicates multiple episodes of interbreeding between Neanderthals and the ancestors of both populations."

MOST READ WORLD NEWS BUSTED Argentine MP caught kissing & fondling his girlfriend's boob during virtual debate Latest CLEAVER HORROR Two hacked with meat cleaver near Charlie Hebdo office in Paris 'terror act' WHALE OF A TIME Stunning underwater snaps show fish hitching ride in whale shark's mouth GANGSTER NO 1 New 'El Chapo' seizes control of Mexico gang that sets rivals' heads on fire SAMBA SILENCED Rio Carnival postponed for first time in 100 years after 138k Covid deaths Graphic Warning GRIM FIND Bizarre moment medics strap dead woman to bike to take body to morgue in Thailand HEIR FORCE ONE Meghan 'would consider running for President if she ditched Royal title' RACE TO THE WHITE HOUSE 2020 US presidential election odds, from Joe Biden to Kanye West RULING IT OVER Sweden 'may have avoided Covid 2nd wave by not changing rules like the UK ‘SORRY TO DISAPPOINT’ Kim Jong-un makes rare apology for executing South Korean official

It follows recent studies which found Denisovans, another extinct relative, had sex with Neanderthals and humans on numerous occasions.

The Denisovan species, genetically different from Neanderthals and humans, was only discovered in southern Siberia ten years ago.

There were at least three different human forms on Earth only 40,000 years ago - all having sex with each other. And there may have been more.

We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368 . You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.