Gigantopithecus (in Greek, gigantas meaning “giant” and pithecus meaning “ape”) is an extinct genus of ape that existed from roughly one million years to as recently as three-hundred thousand years ago, in what is now China, India, and Vietnam, placing Gigantopithecus in the same time frame and geographical locality as numerous hominin species. The fossil record suggests that the Gigantopithecus blacki species were the tallest and biggest apes that ever lived, standing up to 3 metres (9.8 ft) and weighing as much as 540 kilograms (1,200 lb).
The earliest Gigantopithecus remains discovered by an anthropologist were found in 1935 by Ralph von Koenigswald in an apothecary shop. Fossilized teeth and bones are often ground into fine powder and used in some branches of Traditional Chinese remedies. Von Koenigswald named the theorized species Gigantopithecus. Ever since then, relatively a small number of fossils of Gigantopithecus have been found. Essentially in a nutshell Gigantopithecus is a monster size version of today’s common gorilla, which is for all intents and purposes how Bigfoot is described by eyewitnesses.
A popular theory used by Bigfoot hunters and researchers alike to provide a valid zoological identity for Bigfoot, the Abominable Snowman, Yeti and Sasquatch creatures is that they are none other than the Gigantopithecus, still alive in relict populations throughout the world.
Even though Gigantopithecus and Bigfoot have many similarities they also have their differences. Besides their differences physically there is also the problem of how did Gigantopithecus travel across countries and overseas into the United States? Did Gigantopithecus travel across natural land bridges or did they swim across somehow; all valid questions on their own.
So the question stands, could a Gigantopithecus or his descendants be the actually source of the Yeti or Bigfoot tales. As stated before Bigfoot investigators along with a couple of maverick scientists claim this theory to be viable. Having said that, most if not all mainstream scientists reject this notion and quite frankly reject the possibility of any Bigfoot type of creature existing nowadays. As usual Bigfoot investigators can come up with all types of theories and possibilities however until a body is found or a Bigfoot is captured dead or alive the questions will remain.