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Evolution of vertebral numbers in primates, with a focus on hominoids and the last common ancestor of hominins and panins.
Spear, Jeffrey K; Grabowski, Mark; Sekhavati, Yeganeh; Costa, Christina E; Goldstein, Deanna M; Petrullo, Lauren A; Peterson, Amy L; Lee, Amanda B; Shattuck, Milena R; Gómez-Olivencia, Asier; Williams, Scott A.
Afiliação
  • Spear JK; Center for the Study of Human Origins, Department of Anthropology, New York University, New York, NY, USA; New York Consortium in Evolutionary Primatology, New York, NY, USA. Electronic address: jks417@nyu.edu.
  • Grabowski M; Research Centre in Evolutionary Anthropology and Paleoecology, Liverpool John Moores University, Liverpool, UK; Department of Biosciences, Centre for Ecological and Evolutionary Synthesis, University of Oslo, Oslo, Norway.
  • Sekhavati Y; Department of Anthropology, Washington University in St. Louis, St. Louis, MO, USA.
  • Costa CE; Center for the Study of Human Origins, Department of Anthropology, New York University, New York, NY, USA; New York Consortium in Evolutionary Primatology, New York, NY, USA.
  • Goldstein DM; Department of Anatomical Sciences, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, USA.
  • Petrullo LA; Department of Psychology, University of Michigan, Ann Arbor, MI, USA.
  • Peterson AL; Smithsonian Institution, National Museum of Natural History, Washington DC, USA.
  • Lee AB; Data Scientist, Jellyfish, Suite 3033, 220 N Green St, Chicago, IL, USA.
  • Shattuck MR; Department of Anthropology, Hunter College CUNY, New York, NY, USA.
  • Gómez-Olivencia A; Departamento de Geología, Facultad de Ciencia y Tecnología, Universidad Del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Barrio Sarriena S/n, 48940 Bilbao, Spain; Sociedad de Ciencias Aranzadi, Zorroagagaina 11, 20014 Donostia-San Sebastián, Spain; Centro UCM-ISCIII de Investigación Sobre Evo
  • Williams SA; Center for the Study of Human Origins, Department of Anthropology, New York University, New York, NY, USA; New York Consortium in Evolutionary Primatology, New York, NY, USA.
J Hum Evol ; 179: 103359, 2023 06.
Article em En | MEDLINE | ID: mdl-37099927
The primate vertebral column has been extensively studied, with a particular focus on hominoid primates and the last common ancestor of humans and chimpanzees. The number of vertebrae in hominoids-up to and including the last common ancestor of humans and chimpanzees-is subject to considerable debate. However, few formal ancestral state reconstructions exist, and none include a broad sample of primates or account for the correlated evolution of the vertebral column. Here, we conduct an ancestral state reconstruction using a model of evolution that accounts for both homeotic (changes of one type of vertebra to another) and meristic (addition or loss of a vertebra) changes. Our results suggest that ancestral primates were characterized by 29 precaudal vertebrae, with the most common formula being seven cervical, 13 thoracic, six lumbar, and three sacral vertebrae. Extant hominoids evolved tail loss and a reduced lumbar column via sacralization (homeotic transition at the last lumbar vertebra). Our results also indicate that the ancestral hylobatid had seven cervical, 13 thoracic, five lumbar, and four sacral vertebrae, and the ancestral hominid had seven cervical, 13 thoracic, four lumbar, and five sacral vertebrae. The last common ancestor of humans and chimpanzees likely either retained this ancestral hominid formula or was characterized by an additional sacral vertebra, possibly acquired through a homeotic shift at the sacrococcygeal border. Our results support the 'short-back' model of hominin vertebral evolution, which postulates that hominins evolved from an ancestor with an African ape-like numerical composition of the vertebral column.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hominidae Limite: Animals / Humans Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hominidae Limite: Animals / Humans Idioma: En Ano de publicação: 2023 Tipo de documento: Article