Could these pictures dated from the 1930s of a supposed apeman found in the jungles of Brazil be proof for the much sought after missing link?
His giant lips and furrowed brow and awkward monkey-like gait appear to be simian and the Dutch magazine Het Leven which published them in 1937 certainly seemed convinced, describing the pictures as those of a mystery apeman.
The internet has been awash with speculation following the appearance of the pictures on the imgur picture-sharing website two days ago. Since then, millions have seen them on reddit, Facebook and such like.
But what is the real story behind the online excitement? Many observers claim to have spotted tell-tale signs of prosthetic make-up on his face, yet many more seem keen to believe this is historic evidence of an anthropological marvel.
|The apeman is pictured here in 1937 in Brazil in a photograph published in the magazine Het Leven|
|The apeman is remarkably clean shaven for a wild creature caught in the jungle as he sits on his haunches with his knuckles closed|
Visible in one picture is the line of the prosthetic mouth which covers the chin up to the bridge of the nose.
And other observers have pointed out that the forehead will always be covered with hair in any make-up situation to blend in the prosthesis.
One shrewd Reddit user pointed out that for a man recently found wild in the jungles of Brazil, he is remarkably well shaven and has a particularly neat, if unfashionable haircut.
Others online have made the sad claim that this apeman is most likely an unfortunate individual born with birth defects and exploited to wear the make-up and prosthetics to pose and pretend to be a newly discovered apeman.
One particularly dismissive Reddit poster wrote: 'It's probably formed and painted rubber. I doubt this lasted long as it is easy to see in action that the mouth does not move much and when it does it is unnatural. Also, the guy has to keep his brow furrowed the whole time which is hard to keep up.'
But there are many who may choose to believe in the existence of apemen. Throughout the 20th century and into the 21st, reports of wild and mythic ape-like beasts living in remote and far-flung locations have fascinated readers across the world.
|Starting at the bridge of the nose it is possible to trace a line which online observers have pointed out could possibly be the joining lines of a prosthesis or make-up|
While camped in 1920 near the Tarra River, two large monkey-like creatures standing 1.57 metres tall approached the expedition and began howling and gesturing loudly.
Fearing for the safety of the group, the male was shot dead and De Loys and his team realised that they had encountered an unsusual animal.
Despite resembling a spider monkey, the beast had no tail and 32 teeth compared to most North and South American monkeys which have 36 teeth.
Propping the creature up with a stick under its chin, De Loys took a photograph and then skinned the creature intending to keep its hide and skull.
|The 1920 picture that shows De Loy's Ape - reportedly of an unusual monkey that stood upright and became aggressive to Swiss geologist Francois De Loys|
Upon returning to Europe, De Loys did not relate the incident to anyone until 1929, when his friend, the anthropologist George Montandon discovered the photograph while going through the geologists records.
Critics immediately pounced claiming that one picture was not enough proof, pointing out that the claim the creature did not have a tail could not be confirmed from the angle of the photograph.
Others said that the monkey's size could not be properly ascertained and that at most the crate it is sitting on is 15 inches tall and that would make the monkey under 4-feet tall, smaller than De Loy's claimed.
On the other side of the argument, cryptozoologists who study hidden or lost animals, see that De Loys Ape has a different chest and hands to other spider monkeys and that it has a much higher forehead.
|The yowie - the Australian version of a mythic ape-like creature that inhabits remote woods|
The two most famous examples are the Bigfoots or sasquatch of North America and the Yeti of the Himalayas.
It almost seems that the expeditions to find either one have match the number of sighting's and both legends persist to this day.
Even in far flung Australia, the Aboriginal people there have their Outback apeman or Yowie, who legend has it stands only five-feet tall to the bigfoot and yeti's eight.