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García-Martínez D, Green DJ, Bermúdez de Castro JM. Evolutionary development of the Homo antecessor scapulae (Gran Dolina site, Atapuerca) suggests a modern-like development for Lower Pleistocene Homo. Sci Rep 2021; 11:4102. [PMID: 33602966 PMCID: PMC7892855 DOI: 10.1038/s41598-021-83039-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 01/25/2021] [Indexed: 01/31/2023] Open
Abstract
Two well-preserved, subadult 800 ky scapulae from Gran Dolina belonging to Homo antecessor, provide a unique opportunity to investigate the ontogeny of shoulder morphology in Lower Pleistocene humans. We compared the H. antecessor scapulae with a sample of 98 P. troglodytes and 108 H. sapiens representatives covering seven growth stages, as well as with the DIK-1-1 (Dikika; Australopithecus afarensis), KNM-WT 15000 (Nariokotome; H. ergaster), and MH2 (Malapa; A. sediba) specimens. We quantified 15 landmarks on each scapula and performed geometric morphometric analyses. H. sapiens scapulae are mediolaterally broader with laterally oriented glenoid fossae relative to Pan and Dikika shoulder blades. Accordingly, H. antecessor scapulae shared more morphological affinities with modern humans, KNM-WT 15000, and even MH2. Both H. antecessor and modern Homo showed significantly more positive scapular growth trajectories than Pan (slopes: P. troglodytes = 0.0012; H. sapiens = 0.0018; H. antecessor = 0.0020). Similarities in ontogenetic trajectories between the H. antecessor and modern human data suggest that Lower Pleistocene hominin scapular development was already modern human-like. At the same time, several morphological features distinguish H. antecessor scapulae from modern humans along the entire trajectory. Future studies should include additional Australopithecus specimens for further comparative assessment of scapular growth trends.
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Affiliation(s)
- Daniel García-Martínez
- Centro Nacional para el Estudio de la Evolución Humana (CENIEH), Paseo Sierra de Atapuerca 3, 09002, Burgos, Spain.
- Departamento de Paleobiología, Museo Nacional de Ciencias Naturales (CSIC), José Gutiérrez Abascal 2, 28006, Madrid, Spain.
| | - David J Green
- Department of Anatomy, Campbell University School of Osteopathic Medicine, Buies Creek, NC, 27506, USA
- Evolutionary Studies Institute, University of the Witwatersrand, Private Bag 3, Johannesburg, WITS, 2050, South Africa
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Bermúdez de Castro JM, Martínez de Pinillos M, López-Polín L, Martín-Francés L, García-Campos C, Modesto-Mata M, Rosell J, Martinón-Torres M. A descriptive and comparative study of two Early Pleistocene immature scapulae from the TD6.2 level of the Gran Dolina cave site (Sierra de Atapuerca, Spain). J Hum Evol 2020; 139:102689. [PMID: 31902740 DOI: 10.1016/j.jhevol.2019.102689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 10/03/2019] [Accepted: 10/09/2019] [Indexed: 11/26/2022]
Abstract
Here we present the descriptive and comparative study of two immature scapulae recovered from the TD6.2 level of the Gran Dolina cave site (Sierra de Atapuerca, Spain) and assigned to Homo antecessor. This is the first time that data on the morphology and dimensions of the scapulae of a European late Early Pleistocene hominin population are provided. Considering the state of development and the linear dimensions, the scapula ATD6-116 could belong to a child of about 2-4 years. The morphology of ATD6-116 clearly departs from that of the Australopithecus afarensis juvenile specimen DIK-1-1, pointing to functional differences in locomotor behavior between Australopithecus and the late Early Pleistocene hominins. The immature scapula ATD6-118 belonged to an immature individual with a development of the scapula equivalent to that of adolescents of recent human populations. The scapulae ATD6-118 and KNM-WT 15000 present a similar state of development. Although the scapula KNM-WT 15000 is clearly larger than ATD6-118, these two specimens share some characteristics such as their relative narrowness and the value of the axilloglenoid and spinoglenoid angles. The glenoid fossa of ATD6-116 show a lateral orientation, whereas in ATD6-118 the glenoid fossa is slightly cranially oriented, but still within the range of variation of modern humans. The glenoid index of both ATD6-116 and ATD6-118 is low in accordance to the values usually observed in other early hominins, thus showing the primitive condition for this feature. Both scapulae show a ventrally placed axillary sulcus. The presence of this primitive feature in ATD-116 confirms that the shape of the axillary border has a genetic basis and it is not related to physical activity.
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Affiliation(s)
- José María Bermúdez de Castro
- Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo de la Sierra de Atapuerca 3, 09002 Burgos, Spain; Anthropology Department, University College London, 14 Taviton Street, London WC1 H 0BW, UK.
| | - Marina Martínez de Pinillos
- Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo de la Sierra de Atapuerca 3, 09002 Burgos, Spain.
| | - Lucía López-Polín
- IPHES, Institut Català de Paleoecologia Humana i Evolució Social, Unit Associated to CSIC, C/Marcel.lí Domingo s/n-Campus Sescelades URV (Edifici W3), 43007 Tarragona, Spain.
| | - Laura Martín-Francés
- Univ. Bordeaux, CNRS, MCC, PACEA, UMR 5199, F-33615 Pessac Cedex, France; Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo de la Sierra de Atapuerca 3, 09002 Burgos, Spain.
| | - Cecilia García-Campos
- Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo de la Sierra de Atapuerca 3, 09002 Burgos, Spain.
| | - Mario Modesto-Mata
- Equipo Primeros Pobladores de Extremadura, Casa de la Cultura Rodríguez Moñino, Avda. Cervantes s/n., 10003 Cáceres, Spain.
| | - Jordi Rosell
- Área de Prehistoria, Universitat Rovira i Virgili (URV), Avinguda de Catalunya 35, 43002 Tarragona, Spain; IPHES, Institut Català de Paleoecologia Humana i Evolució Social, Unit Associated to CSIC, C/Marcel.lí Domingo s/n-Campus Sescelades URV (Edifici W3), 43007 Tarragona, Spain.
| | - María Martinón-Torres
- Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo de la Sierra de Atapuerca 3, 09002 Burgos, Spain; Anthropology Department, University College London, 14 Taviton Street, London WC1 H 0BW, UK.
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Omar N, Mohd Ali SH, Shafie MS, Nik Ismail NA, Hadi H, Ismail R, Mohd Nor F. Sex estimation from reconstructed scapula models using discriminant function analysis in the Malaysian population. AUST J FORENSIC SCI 2019. [DOI: 10.1080/00450618.2019.1661516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Normaliza Omar
- Forensic Unit, Department of Pathology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
- Department of Basic Medical Science 1, Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, Kuala Lumpur, Malaysia
| | - Siti Hanum Mohd Ali
- Forensic Unit, Department of Pathology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
- Department of Basic Medical Science 1, Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, Kuala Lumpur, Malaysia
| | - Mohamed Swarhib Shafie
- Forensic Unit, Department of Pathology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Nik Azuan Nik Ismail
- Radiology Department, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Helmi Hadi
- School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Rosnah Ismail
- Community Health Department, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Faridah Mohd Nor
- Forensic Unit, Department of Pathology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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Welson NN, Basset ASAE. Age and sex estimation by knee roentgenographic assessment: An Egyptian population study. JOURNAL OF FORENSIC RADIOLOGY AND IMAGING 2019; 18:4-10. [DOI: 10.1016/j.jofri.2019.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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El-Din EAA, Mostafa HES, Tantawy EF, El-Shafei DA. Magnetic resonance imaging of the proximal tibial epiphysis: could it be helpful in forensic age estimation? Forensic Sci Med Pathol 2019; 15:352-361. [DOI: 10.1007/s12024-019-00116-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2019] [Indexed: 10/26/2022]
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Bleuze MM, Wheeler SM, Williams LJ, Dupras TL. Growth of the pectoral girdle in a sample of juveniles from the kellis 2 cemetery, Dakhleh Oasis, Egypt. Am J Hum Biol 2016; 28:636-45. [PMID: 26914741 DOI: 10.1002/ajhb.22844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/25/2015] [Accepted: 01/13/2016] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES This study investigates growth patterns in the scapula and clavicle in a cross-sectional juvenile skeletal sample ranging from 20 weeks gestation to 8.5 years of age from the Kellis 2 cemetery, Dakhleh Oasis, Egypt. The primary goal is to quantify growth patterns and growth velocities in the scapula and clavicle to better understand the development of the pectoral girdle. METHODS A series of low-order polynomial regression models was used to examine growth curves in clavicle diaphyseal length, scapular height, and scapular width. Incremental growth and relative percent increase were examined among successive age groups as a proxy measure of growth velocity. Scapular body proportions were assessed with the scapular index and compared across age groups using a Kruskal-Wallis test with post-hoc tests. RESULTS A third-order polynomial best describes growth in clavicle diaphyseal length and scapular height, and a second-order polynomial best describes growth in scapular width. Growth velocity patterns are similar among clavicle diaphyseal length, scapular height, and scapular width particularly from birth until the end of early childhood. Clavicle diaphyseal length decelerates during middle childhood while scapular height and width accelerate during this time. With increasing age, the scapular body proportionately increases more in height than in width. The relatively narrow scapular body characteristic of adult scapulae is first evident during early childhood. CONCLUSIONS Changes in scapular body shape during ontogeny may be a reflection of the greater alterations taking place in the integrated morphology of the pectoral girdle during the biomechanical shift from crawling to bipedalism. Am. J. Hum. Biol. 28:636-645, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Michele M Bleuze
- Department of Anthropology, The University at Albany, State University of New York, Albany, NY, 12222.
| | - Sandra M Wheeler
- Department of Anthropology, University of Central Florida, Orlando, FL, 32816
| | - Lana J Williams
- Department of Anthropology, University of Central Florida, Orlando, FL, 32816
| | - Tosha L Dupras
- Department of Anthropology, University of Central Florida, Orlando, FL, 32816
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