Paranasal pneumatization in extant and fossil Cercopithecoidea

Hdl Handle:
http://hdl.handle.net/10142/40873
Title:
Paranasal pneumatization in extant and fossil Cercopithecoidea
Authors:
Rae, Todd C.
Abstract:
Unlike most primates, extant cercopithecoids lack maxillary sinuses, which are pneumatic spaces in the facial skeleton lateral of the nasal cavity proper. Character state analysis of living cercopithecoids across well-supported topologies suggests that the sinus was lost at the origin of the superfamily, only to have evolved again convergently in extant macaques. Recent work has shown that a) the ‘early loss’ hypothesis is supported by the lack of any pneumatization in _Victoriapithecus_, a stem cercopithecoid, b) like extant macaques, the fossil cercopithecine _Paradolichopithecus_ shows evidence of presence of the maxillary sinus (MS), and c) unlike extant colobines, the fossil colobine _Libypithecus_ also possesses a maxillary sinus. To more fully assess the pattern of cercopithecoid sinus evolution, fossil taxa from both subfamilies (Colobinae, Cercopithecinae) were examined both visually and by computed tomography (CT). The observations were evaluated according to standard anatomical criteria for defining sinus spaces, and compared with data from all extant Old World monkey genera. Most taxa examined conformed to the pattern already discerned from extant cercopithecoids. Maxillary sinus absence in _Theropithecus oswaldi_, _Mesopithecus_, and _Rhinocolobus_ is typical for all extant cercopithecids except _Macaca_. The fossil macaque _Macaca majori_ possesses a well-developed maxillary sinus, as do all living species of the genus. _Cercopithecoides_, on the other hand, differs from all extant colobines in possessing a maxillary sinus. Thus, paranasal pneumatization has reemerged a minimum of two and possibly three times in cercopithecoids. The results suggest that maxillary sinus absence in cercopithecoids is due to suppression, rather than complete loss.
Citation:
Volume 54, Issue 3, Pages 279-286
Publisher:
Elsevier
Journal:
Journal of Human Evolution
Issue Date:
Mar-2008
URI:
http://hdl.handle.net/10142/40873
DOI:
:10.1016/j.jhevol.2007.07.010
Type:
Article
Language:
en_US
ISSN:
0047-2484
Sponsors:
Leakey Foundation
Appears in Collections:
Department of Life Sciences Collection

Full metadata record

DC FieldValue Language
dc.contributor.authorRae, Todd C.-
dc.date.accessioned2008-11-13T09:07:55Z-
dc.date.available2008-11-13T09:07:55Z-
dc.date.issued2008-03-
dc.identifier.citationVolume 54, Issue 3, Pages 279-286en
dc.identifier.issn0047-2484-
dc.identifier.doi:10.1016/j.jhevol.2007.07.010-
dc.identifier.urihttp://hdl.handle.net/10142/40873-
dc.description.abstractUnlike most primates, extant cercopithecoids lack maxillary sinuses, which are pneumatic spaces in the facial skeleton lateral of the nasal cavity proper. Character state analysis of living cercopithecoids across well-supported topologies suggests that the sinus was lost at the origin of the superfamily, only to have evolved again convergently in extant macaques. Recent work has shown that a) the ‘early loss’ hypothesis is supported by the lack of any pneumatization in _Victoriapithecus_, a stem cercopithecoid, b) like extant macaques, the fossil cercopithecine _Paradolichopithecus_ shows evidence of presence of the maxillary sinus (MS), and c) unlike extant colobines, the fossil colobine _Libypithecus_ also possesses a maxillary sinus. To more fully assess the pattern of cercopithecoid sinus evolution, fossil taxa from both subfamilies (Colobinae, Cercopithecinae) were examined both visually and by computed tomography (CT). The observations were evaluated according to standard anatomical criteria for defining sinus spaces, and compared with data from all extant Old World monkey genera. Most taxa examined conformed to the pattern already discerned from extant cercopithecoids. Maxillary sinus absence in _Theropithecus oswaldi_, _Mesopithecus_, and _Rhinocolobus_ is typical for all extant cercopithecids except _Macaca_. The fossil macaque _Macaca majori_ possesses a well-developed maxillary sinus, as do all living species of the genus. _Cercopithecoides_, on the other hand, differs from all extant colobines in possessing a maxillary sinus. Thus, paranasal pneumatization has reemerged a minimum of two and possibly three times in cercopithecoids. The results suggest that maxillary sinus absence in cercopithecoids is due to suppression, rather than complete loss.en
dc.description.provenanceSubmitted by Todd C. Rae (t.rae@roehampton.ac.uk) on 2008-11-12T13:26:35Z No. of bitstreams: 1 Rae_2008_JHE.pdf: 939655 bytes, checksum: e6363bd1755a4eeff008244fad9c486d (MD5)en
dc.description.provenanceApproved for entry into archive by Pat Simons(p.simons@roehampton.ac.uk) on 2008-11-13T09:07:55Z (GMT) No. of bitstreams: 1 Rae_2008_JHE.pdf: 939655 bytes, checksum: e6363bd1755a4eeff008244fad9c486d (MD5)en
dc.description.provenanceMade available in DSpace on 2008-11-13T09:07:55Z (GMT). No. of bitstreams: 1 Rae_2008_JHE.pdf: 939655 bytes, checksum: e6363bd1755a4eeff008244fad9c486d (MD5) Previous issue date: 2008-03en
dc.description.sponsorshipLeakey Foundationen
dc.language.isoen_USen
dc.publisherElsevieren
dc.subjectOld World monkeysen
dc.subjectParanasal sinusesen
dc.titleParanasal pneumatization in extant and fossil Cercopithecoideaen_US
dc.typeArticleen
dc.identifier.journalJournal of Human Evolutionen
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