Results 11 to 20 of about 5,943 (216)

Bipedalism or bipedalisms: The os coxae of StW 573

Journal of Anatomy
AbstractThere has been a long debate about the possibility of multiple contemporaneous species of Australopithecus in both eastern and southern Africa, potentially exhibiting different forms of bipedal locomotion. Here, we describe the previously unreported morphology of the os coxae in the 3.67 Ma Australopithecus prometheus StW 573 from Sterkfontein ...
Crompton, Robin, Elton, Sarah, Heaton, Jason, Pickering, Travis, Carlson, Kristian, Jashashvili, Tea, Beaudet, Amélie, Bruxelles, Laurent, Kuman, Kathleen, Thorpe, Simon, Hirasaki, Eishi, Scott, Christopher, Sellers, William, Pataky, Todd, Clarke, Ronald, Mcclymont, Erin   +15 more
openaire   +7 more sources

Terrestrial Positional Behavior of Wild Pongo pygmaeus. [PDF]

Am J Biol Anthropol
ABSTRACT Objectives As a predominantly arboreal animal in the wild, the terrestrial positional behavior of Pongo pygmaeus is poorly understood, having been studied almost exclusively in captive settings. This study uses camera‐trap footage to provide the first assessment of wild orangutan terrestrial locomotor and postural behavior on natural ...
Orlikoff ER, Estrada GR, Marshall AJ, Wittmer HU, Setiawan E, Knott CD, Sarringhaus L, MacLatchy LM.   +7 more
europepmc   +2 more sources

Variation in the Angle of the First Pedal Ray Relative to the Midline of the Foot by Sex and Parity History. [PDF]

Am J Biol Anthropol
ABSTRACT Objective Although pathological variations of the first pedal ray have been well‐studied, non‐pathologic variations, including those potentially linked to hormonal changes during pregnancy, have yet to be examined. Here we quantify the angle between the longitudinal axes of the first and third metatarsals and investigate variation in this ...
Whitman PS, Lomax AEC, Kramer PA, Harper CM.   +3 more
europepmc   +2 more sources

Homoplasy in the evolution of modern human-like joint proportions in Australopithecus afarensis

eLife, 2021
The evolution of bipedalism and reduced reliance on arboreality in hominins resulted in larger lower limb joints relative to the joints of the upper limb. The pattern and timing of this transition, however, remains unresolved.
Anjali M Prabhat, Catherine K Miller, Thomas Cody Prang, Jeffrey Spear, Scott A Williams, Jeremy M DeSilva   +5 more
doaj   +1 more source

Becoming adults: exploring the late ontogeny of the human talus

Frontiers in Ecology and Evolution, 2023
IntroductionThe talus plays an important role in receiving and dissipating the forces and linking the leg and the foot. As such, it is of paramount importance to analyze how its morphology, internal and external, changes during late ontogeny and through ...
Carla Figus, Rita Sorrentino, Kristian J. Carlson, Kristian J. Carlson, Antony Colombo, Antony Colombo, Eugenio Bortolini, Federico Bernardini, Federico Bernardini, Igor Erjavec, Tamás Hajdu, Tamás Szeniczey, Orsolya Mateovics-László, Ildiko Pap, Claudio Tuniz, Mario Novak, Maria Giovanna Belcastro, Timothy M. Ryan, Stefano Benazzi   +18 more
doaj   +1 more source

Decoupling body shape and mass distribution in birds and their dinosaurian ancestors

Nature Communications, 2023
It is accepted that non-avian theropod dinosaurs, with their long muscular tails and small forelimbs, had a centre-of-mass close to the hip, while extant birds, with their reduced tails and enlarged wings have their mass centred more cranially ...
Sophie Macaulay, Tatjana Hoehfurtner, Samuel R. R. Cross, Ryan D. Marek, John R. Hutchinson, Emma R. Schachner, Alice E. Maher, Karl T. Bates   +7 more
doaj   +1 more source

Human, almost human: how many human species are there?

Bulletins et Mémoires de la Société d’Anthropologie de Paris, 2022
The debate on the question "How many human species are there?" may never be resolved. Leaving aside the theological and political aspects of the question, this paper analyses three dimensions of the problem – metaphysical, biological and technical ...
Thierry Hoquet
doaj   +1 more source

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

The biomechanical importance of the scaphoid-centrale fusion during simulated knuckle-walking and its implications for human locomotor evolution [PDF]

, 2020
© 2020, The Author(s). Inferring the locomotor behaviour of the last common ancestor (LCA) of humans and African apes is still a divisive issue. An African great-ape-like ancestor using knuckle-walking is still the most parsimonious hypothesis for the ...
Chamberlain, A.T., Marcé-Nogué, J., Püschel, T.A., Sellers, W.I., Yoxall, Alaster   +4 more
core   +2 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