Journal of Human Evolution最新文献

{"title":"Postcranial evidence does not support habitual bipedalism in Sahelanthropus tchadensis: A reply to Daver et al. (2022)","authors":"Marine Cazenave , Marta Pina , Ashley S. Hammond , Madelaine Böhme , David R. Begun , Nikolai Spassov , Alessandra Vecino Gazabón , Clément Zanolli , Aude Bergeret-Medina , Damiano Marchi , Roberto Macchiarelli , Bernard Wood","doi":"10.1016/j.jhevol.2024.103557","DOIUrl":"10.1016/j.jhevol.2024.103557","url":null,"abstract":"","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"198 ","pages":"Article 103557"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141452213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phylogenetic comparative analysis of suspensory adaptations in primates","authors":"Jeffrey K. Spear","doi":"10.1016/j.jhevol.2024.103616","DOIUrl":"10.1016/j.jhevol.2024.103616","url":null,"abstract":"<div><div>The evolution of suspensory locomotion in primates has been of great interest to biological anthropologists since the early 20th century due to the contentious hypothesis that suspension in hominoids may have been a preadaptation for bipedalism. Studies of fossil hominoids regularly look for traits (or lack thereof) indicative of suspension, but many fossils exhibit potentially confusing mosaics of traits, and there is ongoing debate regarding whether certain traits are truly associated with suspension or whether they might more accurately represent allometric trends, developmental byproducts, or adaptation to cautious climbing. Here, I test the association between 27 morphological traits and forelimb suspension in extant primates using phylogenetically informed comparative methods, a broad comparative sample (nearly 1500 individuals representing 74 genera), and a systematic review of behavioral literature. I find that clavicle length, olecranon length, mediolateral scapula breadth (but not craniocaudal height), and glenoid and scapula spine angle are all strongly associated with suspension. The association is strongest for clavicle and olecranon lengths when the ‘suspensory’ category is highly exclusive, whereas it is strongest for scapula breadth, glenoid angle, and spine angle when the category is highly inclusive (i.e., also including taxa that use only limited amounts of suspension). Humeral head height above the greater tuberosity appears to be associated with nonquadrupedal locomotion generally rather than suspension specifically. Insertions for the biceps and deltoid muscles are significantly more distal in suspensory taxa only when size-standardized by a body size proxy, not when standardized by the length of the load arm. Overall, a majority of hypothesized traits are not actually associated with suspension in a phylogenetic comparative context. Morphological adaptations that do characterize suspension are expressed in a mosaic fashion that depends on the degree of suspension practiced, other behaviors used, and evolutionary history. Most of these traits may be related to an enhanced range of motion at the shoulder.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"198 ","pages":"Article 103616"},"PeriodicalIF":3.1,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142734450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hominin fossil inventory: Quantification and comparison of discrete regional and element representation among early African fossil hominins prior to the emergence of Homo erectus","authors":"Ryan T. McRae ,&nbsp;Bernard Wood","doi":"10.1016/j.jhevol.2024.103615","DOIUrl":"10.1016/j.jhevol.2024.103615","url":null,"abstract":"<div><div>For all but the past few hundred thousand years, skeletal and dental morphology is the only evidence we have of our extinct ancestors and close hominin relatives. With a few exceptions, most lists of early hominin fossils have been assembled for single sites, formations, or taxa, with little attention paid to how different regions of the skeleton contribute to taxon hypodigms. We recognize there are different ways to divide up the hominin fossil record into taxa, but here, we present an inventory of the fossil evidence for the hypodigms of 14 early African hominin taxa that predate the emergence of <em>Homo erectus.</em> The hypodigms are limited to specimens that have been published and unambiguously attributed to a species. We use a novel, fine-resolution coding scheme that allows us to provide detailed counts of element and subelement abundance by taxon. We then compare the element counts of the taxon hypodigms with each other and with a novel standard based on a perfectly preserved skeleton we refer to as ‘hominin expected.’ The resulting hypodigms generally support commonly held assumptions about the early hominin fossil record (e.g., teeth dominate the hypodigms of all taxa), but they do not support the conventional wisdom that there are differences in the regional representation of the hypodigms of taxa that are found exclusively in eastern versus southern Africa. These data and analyses are a first step in exploring the differences in the composition of early hominin hypodigms. They will allow researchers to focus their comparative research on skeletal regions that are well-represented in the early hominin fossil record, as well as serve as tools for developing and addressing hypodigm-scale hypotheses that are central to our understanding of hominin evolution.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"198 ","pages":"Article 103615"},"PeriodicalIF":3.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142734449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maxilla of Siamopithecus eocaenus (Anthropoidea, Primates) from the Paleogene of Krabi, Thailand, and its taxonomic status","authors":"Yaowalak Chaimanee ,&nbsp;Sasa-On Khansubha ,&nbsp;Olivier Chavasseau ,&nbsp;Arnaud Mazurier ,&nbsp;Jean-Jacques Jaeger","doi":"10.1016/j.jhevol.2024.103614","DOIUrl":"10.1016/j.jhevol.2024.103614","url":null,"abstract":"<div><div>Detailed descriptions of the maxillae of <em>Siamopithecus eocaenus</em>, discovered from the latest Eocene/earliest Oligocene lignite mine in the Krabi basin of Peninsular Thailand, are presented. They include the morphology of P³–M³, the palate, a partial orbital region, and the zygomatic root. The specimen exhibits distinctive dental features including a single-rooted P² alveolus, a protocone on the P³ and P⁴, and a true hypocone on the upper molars, indicating its derived anthropoid dentition. Comparative studies and virtual reconstructions of the facial anatomy reveal close affinities with diurnal anthropoids rather than the notharctid strepsirrhines. The reconstructed facial morphology of <em>Siamopithecus</em> displays a short and subvertically oriented face, significant orbital convergence (72.1°), and frontation (81.6°), distinguishing it from both fossil and extant strepsirrhines. Moreover, the presence of a thin bony lamina extending from the distal part of the upper preserved area of the zygomatic suggests partial or complete postorbital closure. Phylogenetic analyses suggest an affiliation with amphipithecids, but recent morphological observations challenge this, leading to the proposal of an elevated family-group ranking, Siamopithecidae. Comparison with the most primitive known Afro-Arabian propliopithecid, the Taqah propliopithecid from Oman, reveals similarities in their molar structure but differences in dental formula (retention of P2) and premolar structure. The abrupt appearance of propliopithecids in the early Oligocene of Afro-Arabia, without a local ancestor, contributes to the debate on whether catarrhine origins were in Asia or Africa. However, alternative views, based on sister-group relationships with oligopithecids, support an African origin of propliopithecids from an undocumented Afro-Arabian region. This research provides new insights into the evolutionary history of early anthropoids, suggesting a complex biogeographical scenario involving both Asian and African lineages.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"198 ","pages":"Article 103614"},"PeriodicalIF":3.1,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142693438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retrodeformation and functional anatomy of a cranial thoracic vertebra in Nacholapithecus kerioi","authors":"Yasuhiro Kikuchi ,&nbsp;Hideki Amano ,&nbsp;Naomichi Ogihara ,&nbsp;Masato Nakatsukasa ,&nbsp;Yoshihiko Nakano ,&nbsp;Daisuke Shimizu ,&nbsp;Yutaka Kunimatsu ,&nbsp;Hiroshi Tsujikawa ,&nbsp;Tomo Takano ,&nbsp;Hidemi Ishida","doi":"10.1016/j.jhevol.2024.103613","DOIUrl":"10.1016/j.jhevol.2024.103613","url":null,"abstract":"","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"198 ","pages":"Article 103613"},"PeriodicalIF":3.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142689752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New primates from the middle Eocene of the Sand Wash Basin, northwestern Colorado","authors":"Rachel H. Dunn","doi":"10.1016/j.jhevol.2024.103612","DOIUrl":"10.1016/j.jhevol.2024.103612","url":null,"abstract":"<div><div>The transition between the Bridgerian and Uintan North American Land Mammal Ages of the middle Eocene is a pivotal time in the evolution of modern mammal ecosystems in North America, marking the beginning of a global cooling trend that led to the recession of tropical forests and gradual faunal turnover on the continent. However, few mammalian faunas are known from this time period, leading to difficulty characterizing and recognizing early Uintan faunal assemblages. The Sand Wash Basin in northwestern Colorado has been suggested to yield fossil faunas of early Uintan age, but fossils from the Sand Wash Basin have not been formally described since the 1970s despite active field work in the region. Here, I describe plesiadapiform and euprimate fossils from the Sand Wash Basin and compare them to other late Bridgerian and early Uintan North American primate assemblages. The Sand Wash Basin primate fauna comprises five species, all of which are known from the Washakie Basin in Wyoming. The presence of <em>Ourayia uintensis</em> suggests that at least some fossil localities within the Sand Wash Basin yield fossils that are Uintan in age; however, the rarity of primates and lack of a stratigraphic context in which to interpret localities make it difficult to determine whether some may be older.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"197 ","pages":"Article 103612"},"PeriodicalIF":3.1,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The human remains of Final Gravettian age from the Reclau Viver and Mollet III caves (Serinyà, NE Iberian Peninsula)","authors":"Joaquim Soler ,&nbsp;Isaac Rufí ,&nbsp;Neus Coromina ,&nbsp;Alba Solés ,&nbsp;Dorothée G. Drucker ,&nbsp;Narcís Soler","doi":"10.1016/j.jhevol.2024.103603","DOIUrl":"10.1016/j.jhevol.2024.103603","url":null,"abstract":"","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"197 ","pages":"Article 103603"},"PeriodicalIF":3.1,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modern African ecosystems as landscape-scale analogues for reconstructing woody cover and early hominin environments","authors":"Enquye W. Negash ,&nbsp;Zeresenay Alemseged ,&nbsp;W. Andrew Barr ,&nbsp;Anna K. Behrensmeyer ,&nbsp;Scott A. Blumenthal ,&nbsp;René Bobe ,&nbsp;Susana Carvalho ,&nbsp;Thure E. Cerling ,&nbsp;Kendra L. Chritz ,&nbsp;Elizabeth McGuire ,&nbsp;Kevin T. Uno ,&nbsp;Bernard Wood ,&nbsp;Jonathan G. Wynn","doi":"10.1016/j.jhevol.2024.103604","DOIUrl":"10.1016/j.jhevol.2024.103604","url":null,"abstract":"<div><div>Reconstructing habitat types available to hominins and inferring how the paleo-landscape changed through time are critical steps in testing hypotheses about the selective pressures that drove the emergence of bipedalism, tool use, a change in diet, and progressive encephalization. Change in the amount and distribution of woody vegetation has been suggested as one of the important factors that shaped early hominin evolution. Previous models for reconstructing woody cover at eastern African hominin fossil sites used global-scale modern soil comparative datasets. Our higher-spatial-resolution study of carbon isotopes in soil organic matter is based on 26 modern African locations, ranging from tropical grass-dominated savannas to forests. We used this dataset to generate a new Eastern Africa–specific Woody Cover Model (EAWCM), which indicates that eastern African hominin sites were up to 13% more wooded than reconstructions based on previous models. Reconstructions using the EAWCM indicate widespread woodlands/bushlands and wooded grasslands and a shift toward C₄-dominated landscapes in eastern Africa over the last 6 million years. Our results indicate that mixed tree–C₄ grass savannas with 10–80% tree cover (but not pure grasslands with &lt;10 % tree cover) dominated early hominin paleoenvironments. Landscapes with these biomes are marked by exceptional heterogeneity, which posed challenges and offered opportunities to early hominins that likely contributed to major behavioral and morphological shifts in the hominin clade.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"197 ","pages":"Article 103604"},"PeriodicalIF":3.1,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jaw-muscle fiber architecture and skull form facilitate relatively wide jaw gapes in male cercopithecoid monkeys","authors":"Andrea B. Taylor ,&nbsp;Claire E. Terhune ,&nbsp;Callum F. Ross ,&nbsp;Christopher J. Vinyard","doi":"10.1016/j.jhevol.2024.103601","DOIUrl":"10.1016/j.jhevol.2024.103601","url":null,"abstract":"<div><div>In primates and other mammals, the capacity to generate a wide maximum jaw gape is an important performance variable related to both feeding and nonfeeding oral behaviors, such as canine gape display and clearing the canines for use as weapons during aggressive encounters. Across sexually dimorphic catarrhine primates, gape is significantly correlated with canine height and with musculoskeletal features that facilitate wide gapes. Given the importance of canine gape behaviors in males as part of intrasexual competition for females, functional relationships between gape, canine height, and musculoskeletal morphology can be predicted to differ between the sexes. We test this hypothesis by investigating sex-specific relationships among these variables in a maximum sample of 32 cercopithecoid species. Using phylogenetic least squares regression, we found that of 18 predicted relationships, 16 of the 18 (89%) were significant in males, whereas only six (33%) were significant in females. Moreover, 15 of the 18 correlations were higher—10 of the 18 significantly higher—in males than in females. Males, but not females, showed strong and significant positive allometry of fiber lengths, indicating that increase in male jaw length is accompanied by allometric increases in the capacity for muscle stretch. While males and females showed significant negative allometry for muscle leverage, only males showed significant negative allometry of muscle leverage relative to jaw gape and canine height. Collectively, these results provide support for the hypothesis that as selection acted to increase relative canine height in male cercopithecoids, one change was an allometric increase in relative maximum jaw gape, along with allometric increases in musculoskeletal morphologies that facilitate gape. Lastly, if gape and canine display/clearance are key targets of selection on masticatory morphology in male cercopithecoids, then cercopithecoid monkeys such as macaques, baboons, and sooty mangabeys may have diminished utility as models for drawing paleobiological inferences from musculoskeletal morphology about feeding behavior and diet in fossil hominins.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"197 ","pages":"Article 103601"},"PeriodicalIF":3.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A cadaveric study of wrist-joint moments in chimpanzees and orangutans with implications for the evolution of knuckle-walking","authors":"Akimasa Ito ,&nbsp;Motoharu Oishi ,&nbsp;Hideki Endo ,&nbsp;Eishi Hirasaki ,&nbsp;Naomichi Ogihara","doi":"10.1016/j.jhevol.2024.103600","DOIUrl":"10.1016/j.jhevol.2024.103600","url":null,"abstract":"<div><div>Understanding the mechanism underlying the evolution of knuckle-walking in African great apes but not in humans may provide important implications about the origin and evolution of human bipedal locomotion. In this study, aiming to reveal possible structural adaptations of the chimpanzee's forearm and hand musculature related to knuckle-walking, we measure the passive elastic moment of the chimpanzee's and orangutan's wrist as it was rotated into extension, immobilizing the metacarpophalangeal joint at three different positions: extended (as in knuckle-walking), flexed (as in fist-walking), and an intermediate position. Our findings demonstrate that when the metacarpophalangeal joints are extended, the rigidity of the wrist joint in the extended direction increases. This increased rigidity is attributed to the passive elongation and force generation of digital flexor muscles, which are relatively short in chimpanzees. Consequently, this enhanced wrist-joint rigidity contributes to the stability and energetically efficient transmission of propulsive force to the ground during the stance phase. Overall, our study supports the hypothesis that knuckle-walking is an adaptation to terrestrial locomotion for an ancestor characterized by the restricted capacity for wrist extension owing to the relatively shorter tendons of digital flexor muscles.</div></div>","PeriodicalId":54805,"journal":{"name":"Journal of Human Evolution","volume":"197 ","pages":"Article 103600"},"PeriodicalIF":3.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142548998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}