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Can you post some evidence of Bigfoot or are you talking about the many debunked photos?
Midfoot Flexibility, Fossil Footprints, and Sasquatch Steps: New Perspectives on the Evolution of Bipedalism.
JEFFREY MELDRUM
Dept. of Biological Sciences
Idaho State University
The chimpanzee foot is flexible near its middle, it can bend aboutthe axis of the transverse tarsal joint, whereas the human foot is a comparativelyrigid arched platform. Flexion at the transverse tarsal joint—the ‘‘midtarsalbreak’’—uncouples the functions of a grasping, or prehensile, forefoot and apropulsive hindfoot during grasp-climbing on vertical or inclined supports. Atsome point after the transition to habitual bipedalism, these grasp-climbingadaptations were compromised by the evolution of the longitudinal arch, whichpermits increased mechanical advantage of the flexors of the ankle and improved endurance for long-distance walking and running.Ape, human, and Plio-Pleistocene hominid footprints were examined forthe effects of a midtarsal break. The human footprint reflects arched-footarchitecture, combined with a stiff-legged striding gait. Pressure releases occurat particular locations behind the ball and the great toe, or hallux. Early (ca.3.5 million years ago) hominid footprints from the Laetoli excavation confirmmidfoot flexibility, including repeated suggestion of an associated pressureridge. The Terra Amata footprint (ca. 400,000 years ago), yet to be fully published, exhibits evidence of midfoot flexibility.Several footprints attributed to an alleged North American ape, commonlyknown as sasquatch, exhibit a distinctive midtarsal pressure ridge and otherindications of midfoot flexibility. In the Patterson-Gimlin film, the feet of thefilm subject correlate with the kinematics inferred from the footprints, in thata midtarsal break is present. Additional independent examples corroborate theconsistent presence of this feature, including examples of half-tracks that recordcontact beneath the foot only anterior to the midtarsus. These data providea fresh perspective from which to consider the pattern and timing of the emergence of the distinctive features of modern human bipedalism and bear on thecredibility of the possible existence of sasquatch. The observed and inferred sasquatch locomotor anatomy parallels the stable adaptations that marked the greaterspan of early hominid bipedalism.

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