Results 11 to 20 of about 2,686 (159)

The sexual selection of hominin bipedalism [PDF]

Ideas in Ecology and Evolution, 2018
In this article, I advance a novel hypothesis on the evolution of hominin bipedalism. I begin by arguing extensively for how the transition to bipedalism must have been problematic for hominins during the Neogene.
Michael T Dale
doaj   +5 more sources

Origins of Bipedalism

Brazilian Archives of Biology and Technology, 2015
This article aimed to review various theories of bipedalism and provide a holistic answer to human evolution. There have been two questions regarding bipedalism: i) why were the earliest hominins partially bipedal?, and ii) why did hominins become ...
Kwang Hyun Ko
doaj   +2 more sources

Environmental Context of Hominin Foot Evolution. [PDF]

Am J Biol Anthropol
ABSTRACT Objectives This study investigates the environmental contexts that influenced the evolution of hominin foot morphology, focusing on when, where, and under what conditions key synapomorphies evolved. We test whether shifts in ecological conditions are associated with changes in locomotor function.
Sekhavati Y, Prang TC, Strait D.
europepmc   +2 more sources

Functional morphology and biomechanics of the locomotor apparatus in the large Late Triassic carnivore Postosuchus kirkpatricki (Archosauria: Rauisuchidae). [PDF]

J Anat
A three‐dimensional model is used to analyze the locomotor biomechanics of the large Late Triassic archosaurian reptile Postosuchus kirkpatricki. The study finds that it is more uncertain than previously concluded whether it was quadrupedal or bipedal, and plantigrade or digitigrade, but it clearly had locomotor specializations including large hindlimb
Hutchinson JR, Faughey E, Humpage M, Dupuis T, Demuth OE, Pintore R, Clarac F.   +6 more
europepmc   +2 more sources

A New Experimental Protocol for Assessing Hominoid Assisted Arboreal Bipedalism. [PDF]

Am J Biol Anthropol
International audienceArboreal bipedalism is suggested as a precursor and adaptive locomotor mode for the immediate ancestor of hominin terrestrial bipedalism, yet detailed investigation of its locomotor biomechanics is hindered by its low frequency and ...
Lockwood VA, Druelle F, Blasi-Toccacceli A, Guéry JP, Daver G.   +4 more
europepmc   +2 more sources

Growing together: Developmental integration and modularity in the human talus-calcaneus complex. [PDF]

J Anat
This study investigates morphological integration and trabecular bone development in the human talus–calcaneus complex during postnatal ontogeny. The two bones exhibit strong integration throughout development, with differing bone volume fraction trajectories presumably reflecting their distinct functional roles during bipedal gait acquisition ...
Figus C, Sorrentino R, Seghi F, Belcastro MG, Carlson KJ.   +4 more
europepmc   +2 more sources

Safe Carrying of Heavy Infants Together With Hair Properties Explain Human Evolution

Frontiers in Psychology, 2022
As a physicist, my scientific career was interrupted by maternity, and afterward retaken, with a parallel independent personal perspective on human evolution. My previous published contributions are reanalyzed as Hypothesis and Theory.
Lia Queiroz do Amaral
doaj   +1 more source

Wild chimpanzee behavior suggests that a savanna-mosaic habitat did not support the emergence of hominin terrestrial bipedalism [PDF]

, 2022
Bipedalism, a defining feature of the human lineage, is thought to have evolved as forests retreated in the late Miocene-Pliocene. Chimpanzees living in analogous habitats to early hominins offer a unique opportunity to investigate the ecological drivers
Piel, AK, Drummond-Clarke, RC, Sarringhaus, L, Humle, T, Stewart, FA, Kivell, TL   +5 more
core   +4 more sources

Variability and the form–function framework in evolutionary biomechanics and human locomotion

Evolutionary Human Sciences, 2022
The form–function conceptual framework, which assumes a strong relationship between the structure of a particular trait and its function, has been crucial for understanding morphological variation and locomotion among extant and fossil species across ...
Alison A. Murray
doaj   +1 more source

New fossils of Australopithecus sediba reveal a nearly complete lower back

eLife, 2021
Adaptations of the lower back to bipedalism are frequently discussed but infrequently demonstrated in early fossil hominins. Newly discovered lumbar vertebrae contribute to a near-complete lower back of Malapa Hominin 2 (MH2), offering additional ...
Scott A Williams, Thomas Cody Prang, Marc R Meyer, Thierra K Nalley, Renier Van Der Merwe, Christopher Yelverton, Daniel García-Martínez, Gabrielle A Russo, Kelly R Ostrofsky, Jeffrey Spear, Jennifer Eyre, Mark Grabowski, Shahed Nalla, Markus Bastir, Peter Schmid, Steven E Churchill, Lee R Berger   +16 more
doaj   +1 more source