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Journal of Human Evolution

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https://www.readbyqxmd.com/read/28625408/a-contextual-review-of-the-carnivora-of-kanapoi
#1
Lars Werdelin, Margaret E Lewis
The Early Pliocene is a crucial time period in carnivoran evolution. Holarctic carnivoran faunas suffered a turnover event at the Miocene-Pliocene boundary. This event is also observed in Africa but its onset is later and the process more drawn-out. Kanapoi is one of the earliest faunas in Africa to show evidence of a fauna that is more typical Pliocene than Miocene in character. The taxa recovered from Kanapoi are: Torolutra sp., Enhydriodon (2 species), Genetta sp., Helogale sp., Homotherium sp., Dinofelis petteri, Felis sp...
June 15, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28602430/comment-on-ecological-niche-of-neanderthals-from-spy-cave-revealed-by-nitrogen-isotopes-of-individual-amino-acids-in-collagen-j-hum-evol-93-2016-82-90
#2
Tamsin C O'Connell, Matthew J Collins
No abstract text is available yet for this article.
June 8, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28587753/comment-on-relative-brain-size-in-early-primates-and-the-use-of-encephalization-quotients-in-primate-evolution
#3
Christopher C Gilbert, William L Jungers
No abstract text is available yet for this article.
June 3, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28552208/the-omo-kibish-i-pelvis
#4
Ashley S Hammond, Danielle F Royer, John G Fleagle
Omo-Kibish I (Omo I) from southern Ethiopia is the oldest anatomically modern Homo sapiens skeleton currently known (196 ± 5 ka). A partial hipbone (os coxae) of Omo I was recovered more than 30 years after the first portion of the skeleton was recovered, a find which is significant because human pelves can be informative about an individual's sex, age-at-death, body size, obstetrics and parturition, and trunk morphology. Recent human pelves are distinct from earlier Pleistocene Homo spp. pelves because they are mediolaterally narrower in bispinous breadth, have more vertically oriented ilia, lack a well-developed iliac pillar, and have distinct pubic morphology...
May 25, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28499698/dental-microwear-and-pliocene-paleocommunity-ecology-of-bovids-primates-rodents-and-suids-at-kanapoi
#5
Peter S Ungar, Elicia F Abella, Jenny H E Burgman, Ignacio A Lazagabaster, Jessica R Scott, Lucas K Delezene, Fredrick K Manthi, J Michael Plavcan, Carol V Ward
Reconstructions of habitat at sites like Kanapoi are key to understanding the environmental circumstances in which hominins evolved during the early Pliocene. While Australopithecus anamensis shows evidence of terrestrial bipedality traditionally associated with a more open setting, its enamel has low δ(13)C values consistent with consumption of C3 foods, which predominate in wooded areas of tropical Africa. Habitat proxies, ranging from paleosols and their carbonates to associated herbivore fauna and their carbon isotope ratios, suggest a heterogeneous setting with both grass and woody plant components, though the proportions of each have been difficult to pin down...
May 9, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28478935/interpretation-of-footprints-from-site-s-confirms-human-like-bipedal-biomechanics-in-laetoli-hominins
#6
David A Raichlen, Adam D Gordon
No abstract text is available yet for this article.
May 4, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28476281/evaluating-morphometric-body-mass-prediction-equations-with-a-juvenile-human-test-sample-accuracy-and-applicability-to-small-bodied-hominins
#7
Christopher S Walker, Gabriel S Yapuncich, Shilpa Sridhar, Noël Cameron, Steven E Churchill
Body mass is an ecologically and biomechanically important variable in the study of hominin biology. Regression equations derived from recent human samples allow for the reasonable prediction of body mass of later, more human-like, and generally larger hominins from hip joint dimensions, but potential differences in hip biomechanics across hominin taxa render their use questionable with some earlier taxa (i.e., Australopithecus spp.). Morphometric prediction equations using stature and bi-iliac breadth avoid this problem, but their applicability to early hominins, some of which differ in both size and proportions from modern adult humans, has not been demonstrated...
May 2, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28476280/alternative-methods-for-calculating-percentage-prediction-error-and-their-implications-for-predicting-body-mass-in-fossil-taxa
#8
Gabriel S Yapuncich
Since body mass covaries with many ecological aspects of an animal, body mass prediction of fossil taxa is a frequent goal of paleontologists. Body mass prediction often relies on a body mass prediction equation (BMPE): a bivariate relationship between a predictor variable (e.g., molar occlusal area, femoral head breadth) and body mass as observed in extant taxa. A variety of metrics have been used to assess the reliability of BMPEs, including percentage prediction error (%PE), which involves predicting body masses of a test sample comprising individuals with associated masses...
May 2, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28438318/the-affinities-of-homo-floresiensis-based-on-phylogenetic-analyses-of%C3%A2-cranial-dental-and-postcranial-characters
#9
Debbie Argue, Colin P Groves, Michael S Y Lee, William L Jungers
Although the diminutive Homo floresiensis has been known for a decade, its phylogenetic status remains highly contentious. A broad range of potential explanations for the evolution of this species has been explored. One view is that H. floresiensis is derived from Asian Homo erectus that arrived on Flores and subsequently evolved a smaller body size, perhaps to survive the constrained resources they faced in a new island environment. Fossil remains of H. erectus, well known from Java, have not yet been discovered on Flores...
April 19, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622934/selection-to-outsmart-the-germs-the-evolution-of-disease-recognition-and-social-cognition
#10
Sharon E Kessler, Tyler R Bonnell, Richard W Byrne, Colin A Chapman
The emergence of providing care to diseased conspecifics must have been a turning point during the evolution of hominin sociality. On a population level, care may have minimized the costs of socially transmitted diseases at a time of increasing social complexity, although individual care-givers probably incurred increased transmission risks. We propose that care-giving likely originated within kin networks, where the costs may have been balanced by fitness increases obtained through caring for ill kin. We test a novel hypothesis of hominin cognitive evolution in which disease may have selected for the cognitive ability to recognize when a conspecific is infected...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622933/evaluating-the-potential-for-tactical-hunting-in-the-middle-stone-age-insights-from-a-bonebed-of-the-extinct-bovid-rusingoryx-atopocranion
#11
Kirsten E Jenkins, Sheila Nightingale, J Tyler Faith, Daniel J Peppe, Lauren A Michel, Steven G Driese, Kieran P McNulty, Christian A Tryon
The foraging behaviors of Middle Stone Age (MSA) early modern humans have largely been based on evidence from well-stratified cave sites in South Africa. Whereas these sites have provided an abundance of data for behavioral reconstruction that are unmatched elsewhere in Africa, they are unlikely to preserve evidence of the diversity of foraging strategies employed by MSA hunters who lived in a variety of ecological and landscape settings across the African continent. Here we describe the results of recent excavations at the open-air site of Bovid Hill at Wakondo, Rusinga Island, Kenya, which yielded 24 in situ MSA artifacts within an assemblage of bones comprised exclusively of the extinct alcelaphin bovid Rusingoryx atopocranion...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622932/an-evolutionary-medicine-perspective-on-neandertal-extinction
#12
Alexis P Sullivan, Marc de Manuel, Tomas Marques-Bonet, George H Perry
The Eurasian sympatry of Neandertals and anatomically modern humans - beginning at least 45,000 years ago and possibly lasting for more than 5000 years - has sparked immense anthropological interest into the factors that potentially contributed to Neandertal extinction. Among many different hypotheses, the "differential pathogen resistance" extinction model posits that Neandertals were disproportionately affected by exposure to novel infectious diseases that were transmitted during the period of spatiotemporal sympatry with modern humans...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622931/three-dimensional-morphometrics-of-thoracic-vertebrae-in-neandertals-and-the-fossil-evidence-from-el-sidr%C3%A3-n-asturias-northern-spain
#13
Markus Bastir, Daniel García Martínez, Luis Rios, Antonio Higuero, Alon Barash, Sandra Martelli, Antonio García Tabernero, Almudena Estalrrich, Rosa Huguet, Marco de la Rasilla, Antonio Rosas
Well preserved thoracic vertebrae of Neandertals are rare. However, such fossils are important as their three-dimensional (3D) spatial configuration can contribute to the understanding of the size and shape of the thoracic spine and the entire thorax. This is because the vertebral body and transverse processes provide the articulation and attachment sites for the ribs. Dorsal orientation of the transverse processes relative to the vertebral body also rotates the attached ribs in a way that could affect thorax width...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622930/the-palaeoenvironment-of-the-middle-miocene-pliopithecid-locality-in-damiao-inner-mongolia-china
#14
Leena Sukselainen, Anu Kaakinen, Jussi T Eronen, Benjamin H Passey, Terry Harrison, Zhaoqun Zhang, Mikael Fortelius
Damiao, Inner Mongolia, has three main fossil horizons representing the early, middle, and late Miocene. The middle Miocene locality DM01 is the only primate locality from the region and also represents the latest occurrence of pliopithecoids in northern China. The presence of pliopithecoid primates in central Asia after the middle Miocene climatic optimum seems to contradict the general trend of strengthening climatic zonality and increasing aridity. To investigate this enigma, we employ faunal similarity, ecometrics, and stable isotope analysis...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622929/catarrhine-hallucal-metatarsals-from-the-early-miocene-site-of-songhor-kenya
#15
Biren A Patel, Gabriel S Yapuncich, Cassandra Tran, Isaiah O Nengo
Songhor is an early Miocene fossil locality in Kenya known for its diverse primate assemblage that includes catarrhine species belonging to the genera Kalepithecus, Limnopithecus, Dendropithecus, Rangwapithecus, and Proconsul. Expeditions to Songhor since the 1930s have recovered unassociated catarrhine postcranial remains from both the fore- and hindlimbs, including multiple elements from the feet. In this study, we describe KNM-SO 31233, a complete left hallucal metatarsal (Mt1), along with several other fragmentary Mt1 specimens (KNM-SO 1080, 5129, 5141, 22235)...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622928/dental-development-and-age-at-death-of-the-holotype-of-anapithecus-hernyaki-rud-9-using-synchrotron-virtual-histology
#16
Adeline Le Cabec, M Christopher Dean, David R Begun
The chronology of dental development and life history of primitive catarrhines provides a crucial comparative framework for understanding the evolution of hominoids and Old World monkeys. Among the extinct groups of catarrhines are the pliopithecoids, with no known descendants. Anapithecus hernyaki is a medium-size stem catarrhine known from Austria, Hungary and Germany around 10 Ma, and represents a terminal lineage of a clade predating the divergence of hominoids and cercopithecoids, probably more than 30 Ma...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622927/evolution-of-the-hominin-knee-and-ankle
#17
Mélanie A Frelat, Colin N Shaw, Simone Sukhdeo, Jean-Jacques Hublin, Stefano Benazzi, Timothy M Ryan
The dispersal of the genus Homo out of Africa approximately 1.8 million years ago (Ma) has been understood within the context of changes in diet, behavior, and bipedal locomotor efficiency. While various morphological characteristics of the knee and ankle joints are considered part of a suite of traits indicative of, and functionally related to, habitual bipedal walking, the timing and phylogenetic details of these morphological changes remain unclear. To evaluate the timing of knee and ankle joint evolution, we apply geometric morphometric methods to three-dimensional digital models of the proximal and distal tibiae of fossil hominins, Holocene Homo sapiens, and extant great apes...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622926/hominid-visitation-of-the-moravian-karst-during-the-middle-upper-paleolithic-transition-new-results-from-pod-hradem-cave-czech-republic
#18
L Nejman, R Wood, D Wright, L Lisá, Z Nerudová, P Neruda, A Přichystal, J Svoboda
In 1956-1958, excavations of Pod Hradem Cave in Moravia (eastern Czech Republic) revealed evidence for human activity during the Middle-Upper Paleolithic transition. This spanned 25,050-44,800 cal BP and contained artefacts attributed to the Aurignacian and Szeletian cultures, including those made from porcelanite (rarely used at Moravian Paleolithic sites). Coarse grained excavation techniques and major inversions in radiocarbon dates meant that site chronology could not be established adequately. This paper documents re-excavation of Pod Hradem in 2011-2012...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622925/subsistence-strategies-during-the-late-pleistocene-in-the-southern-cape-of-south-africa-comparing-the-still-bay-of-blombos-cave-with-the-howiesons-poort-of-klipdrift-shelter
#19
Jerome P Reynard, Christopher S Henshilwood
The Still Bay (SB) and Howiesons Poort (HP) were two significant techno-complexes in the Middle Stone Age and key periods in the expression of behavioral complexity. In this study, we compare the recently excavated fauna from the SB layers at Blombos Cave (BBC) with that from the HP levels at Klipdrift Shelter (KDS) in the southern Cape of South Africa. We consider our findings in the framework of recent models for early human subsistence behavior. In particular, we link our study with models involving resource intensification to examine whether foraging strategies in the HP were more or less intensive than those in the SB...
July 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28622924/functional-associations-between-support-use-and-forelimb-shape-in-strepsirrhines-and-their-relevance-to-inferring-locomotor-behavior-in-early-primates
#20
Anne-Claire Fabre, Judit Marigó, Michael C Granatosky, Daniel Schmitt
The evolution of primates is intimately linked to their initial invasion of an arboreal environment. However, moving and foraging in this milieu creates significant mechanical challenges related to the presence of substrates differing in their size and orientation. It is widely assumed that primates are behaviorally and anatomically adapted to movement on specific substrates, but few explicit tests of this relationship in an evolutionary context have been conducted. Without direct tests of form-function relationships in living primates it is impossible to reliably infer behavior in fossil taxa...
July 2017: Journal of Human Evolution
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