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View Full Version : Oreopithecus was a bipedal ape after all



Frans_Jozef
Thursday, December 1st, 2005, 01:38 AM
Oreopithecus was a bipedal ape after all: Evidence from the iliac cancellous architecture

<nowrap> Lorenzo Rook, <wbr> Luca Bondioli, Meike Köhler,<wbr> Salvador Moyà-Solà, and<wbr> Roberto Macchiarelli

</nowrap> Textural properties and functional morphology of the hip bone cancellous network of Oreopithecus bambolii, a 9- to 7-million-year-old<sup> </sup>Late Miocene hominoid from Italy, provide insights into the postural<sup> </sup>and locomotor behavior of this fossil ape. Digital image processing<sup> </sup>of calibrated hip bone radiographs reveals the occurrence of trabecular<sup> </sup>features, which, in humans and fossil hominids, are related to<sup> </sup>vertical support of the body weight, i.e., to<sup> </sup>bipedality.


Full article:
http://www.pnas.org/cgi/content/full/96/15/8795

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Picture source:
http://www.ribollastory.net/scimmia.html

Dr. Solar Wolff
Thursday, December 1st, 2005, 05:16 AM
I saw this fossil when on-loan at the Los Angeles County Museum of Natural History. These remains are flattened into a two-dimensional arrangement. The pelvis is basin-shaped and looked like it supported the internal organs in a vertical position. The pelvis' shape was not the real question. If this creature was a braciator (and so held himself upright, vertically) this arrangement would have been benificial whether he ever walked or not. So, at that time, because the femur-knee-feet were not conclusive, the matter remained open.