Skip to main content Accessibility help
×
Home
Hostname: page-component-684899dbb8-nlvjk Total loading time: 0.468 Render date: 2022-05-19T06:34:03.202Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true }

15 - Forelimb function, bone curvature and phylogeny of Sivapithecus

from PART III - Miocone hominoids: function and phylogeny

Published online by Cambridge University Press:  06 January 2010

Louis de Bonis
Affiliation:
Université de Poitiers
George D. Koufos
Affiliation:
University of Thessaloniki, Greece
Peter Andrews
Affiliation:
Natural History Museum, London
Get access

Summary

Introduction

Rarely have functional inferences been as significant to phylogenetic reconstructions as in the case of Sivapithecus. Although fossils now considered to be Sivapithecus were once thought to be hominid ancestors, the discovery of a facial skeleton (GSP 15000) attributed to Sivapithecus provided strong evidence of an exclusive relationship with Pongo because of a suite of shared, derived traits (Pilbeam, 1982; Ward & Kimbel, 1983; Ward, 1997b). However, the discovery of Sivapithecus postcranial remains, notably two humeral shafts, cast doubt on these relationships (Pilbeam et al., 1990). The anteriorly-convex and medially-concave humeral shaft morphology of these fossils revealed that the orang-utan-like face of Sivapithecus is combined with a pronograde quadrupedal skeletal design unlike that of extant apes. Pilbeam et al. (1990) posited that the fossil evidence is consistent with two phylogenetic scenarios, each requiring a considerable amount of homoplasy. First, Pongo and Sivapithecus may be sister taxa, in which case many postcranial features shared among extant hominoids must have evolved in parallel (Figure 15.1A). Secondly, Pongo and Sivapithecus may not form a clade, in which case the similarities in the face and palate are convergently derived or primitive for great apes (Figure 15.1B). A scenario in which the palatal and facial similarities are primitive for great apes requires subsequent reversals in extant African apes and humans. A third possibility, that Pongo and Sivapithecus are related and that the supposed primitive post-cranial features are in fact reversals from a more modern ape-like condition, was considered by Pilbeam et al. (1990) to be unlikely in the light of postcranial similarities between Sivapithecus and other fossil hominoids such as Proconsul and Equatorius (formerly Kenyapithecus africanus; see Ward et al., 1999).

Type
Chapter
Information
Hominoid Evolution and Climatic Change in Europe
Phylogeny of the Neogene Hominoid Primates of Eurasia
, pp. 326 - 348
Publisher: Cambridge University Press
Print publication year: 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)
21
Cited by

Save book to Kindle

To save this book to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×