Insights into the lower torso in late Miocene hominoid Oreopithecus bambolii
Hammond, Ashley S. (New York Consortium of Evolutionary Primatology)
Rook, Lorenzo (Università di Firenze. Dipartimento di Scienze della Terra)
Anaya, Alisha D. (American Museum of Natural History. Division of Anthropology)
Cioppi, Elisabetta (Università di Firenze. Geologia e Paleontologia. Museo di Storia Naturale)
Costeur, Loïc (Naturhistorisches Museum Basel. Department of Geosciences)
Moyà Solà, Salvador (Institut Català de Paleontologia Miquel Crusafont)
Almécija, Sergio (Institut Català de Paleontologia Miquel Crusafont)

Data:	2020
Resum:	Oreopithecus bambolii (8. 3-6. 7 million years old) is the latest known hominoid from Europe, dating to approximately the divergence time of the Pan-hominin lineages. Despite being the most complete nonhominin hominoid in the fossil record, the O. bambolii skeleton IGF 11778 has been, for decades, at the center of intense debate regarding the species' locomotor behavior, phylogenetic position, insular paleoenvironment, and utility as a model for early hominin anatomy. Here we investigate features of the IGF 11778 pelvis and lumbar region based on torso preparations and supplemented by other O. bambolii material. We correct several crucial interpretations relating to the IGF 11778 anterior inferior iliac spine and lumbar vertebrae structure and identifications. We find that features of the early hominin Ardipithecus ramidus torso that are argued to have permitted both lordosis and pelvic stabilization during upright walking are not present in O. bambolii. However, O. bambolii also lacks the complete reorganization for torso stiffness seen in extant great apes (i. e. , living members of the Hominidae), and is more similar to large hylobatids in certain aspects of torso form. We discuss the major implications of the O. bambolii lower torso anatomy and how O. bambolii informs scenarios of hominoid evolution.
Ajuts:	Ministerio de Economía y Competitividad CGL2017-82654-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-86
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Ape and human evolution ; Pelvis ; Lumbar vertebrae ; Locomotion
Publicat a:	Proceedings of the National Academy of Sciences of the United States of America, Vol. 117, Issue 1 (January 2020) , p. 278-284, ISSN 1091-6490

DOI: 10.1073/pnas.1911896116
PMID: 31871170

8 p, 1.7 MB

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