Hominin historical timelines

The following hominin historical timelines help place bigfoot into evolutionary context through the trait of its nondivergent big toe, and, potentially, an entire suite of traits shared with Homo as well. I’ve excerpted several paragraphs of analysis from Bigfoot in Evolutionary Perspective to put the timelines in greater context, though much greater analysis is provided in the book. Because bipedality was already established in prior data sets, bigfoot must be placed in the hominin lineage where this trait developed in a common ancestor.

Chart 7.1 Hominin historical timeline, Divergent great toe vs. non-divergent great toe (Chart is simplified and does not show all hominin species and the time overlap between species.):

big toe timeline garamond large font

Excerpted from Bigfoot in Evolutionary Perspective:

bigfoot track cast compared with gorillla cast showing different alignment great toe
“Comparison of a bigfoot track cast with a life-size cast of a female gorilla foot. The divergent great toe of the gorilla contrasts the non-divergent great toe of bigfoot. Bigfoot track cast was made by Deputy Sheriff Dennis Heryford of the Grays Harbor County Sheriff’s Department. The tracks were witnessed by four other officers in several neighboring locales.” (p. 161)

“Because the transition to a non-divergent big toe in hominins took place approximately four million years ago, the implications are that bigfoot and human shared ancestry can be traced to at least this time (See chart 7.1). The early australopithecines, either Australopithecus anamensis (4.2 to 3.9 mya) or Australopithecus afarensis (3.6 to 2.9 mya), or quite possibly both, must be considered likely ancestral candidates to not only modern humans but bigfoot as well. Such a shared ancestry dating as recently as three to four million years ago means that bigfoot is mankind’s closest living evolutionary cousin since the last common ancestor of chimps and humans lived approximately five to six million years ago. It’s quite possible, perhaps even likely, that the last common bigfoot-human ancestor lived more recently than three to four million years ago, but the shared anatomical trait of the great toe aligned with the lesser toes at least provides the absolute earliest possible divergence timeframe between the ancestors of our two species at three to four million years ago.” (p. 161-62)

Chart 8.3

Hominin historical timeline: Bigfoot ancestry: two possibilities, Australopithecine ancestry vs. Homo ancestry (Chart is simplified and does not show all hominin species and the time overlap between species.):

bigfoot either aus or homo ancestry garamond bold

Excerpted from Bigfoot in Evolutionary Perspective:

“…an entire suite of characteristics that arose and was strictly endemic to the Homo lineage is exhibited by bigfoot. While not all of these traits, like large prominent brow ridges are exhibited by Homo sapiens per se, traits like these were evident in Homo ancestral forms such as ergaster/erectus and heidelbergensis and close evolutionary cousins like the Neanderthals. Traits evident in bigfoot that are likely inherited from a Homo ancestor that would have lived approximately 1.5 – 2 million years ago and which were not exhibited by any species of australopithecine include the following:

  • Large, prominent brow ridges
  • Nose
  • Increased stature
  • Wide shoulders
  • Barrel-like chest and ribcage (strong lungs)
  • Narrow torso (small guts)
  • Increased size of gluteus maximus
  • Lack of sexual dimorphism
  • Smaller teeth and jaws
  • Increased brain size

Attributing an increased brain size to bigfoot is no doubt controversial at this point, but the physical size of the hominin dictates it. Larger animals require larger brains for the motor control associated with bigger bodies. For this reason alone, the cranial capacity of bigfoot likely exceeds the 400– 500cc range typical of the much shorter (3’6” – 5’), much lighter australopithecines (females under 100 lbs., males not much over 100 lbs.).” (p. 177-78)

Note: I am giving two evolutionary scenarios for bigfoot in Chart 8. 3. While Homo ancestry is more likely based on the suite of traits given above (and other factors discussed in the book), it is possible that these traits developed convergently in bigfoot and the last shared common ancestor of bigfoot and Homo sapiens is an australopithecine.


Copyright 2016 T. A. Wilson. All rights reserved.