Extinct large colobines from the Plio‐Pleistocene of Africa
Identifieur interne : 00D570 ( Main/Exploration ); précédent : 00D569; suivant : 00D571Extinct large colobines from the Plio‐Pleistocene of Africa
Auteurs : Meave G. Leakey [Kenya]Source :
- American Journal of Physical Anthropology [ 0002-9483 ] ; 1982-06.
Descripteurs français
- Wicri :
- geographic : Kenya.
English descriptors
- KwdEn :
- Academic press, Braincase, Cercopithecoides, Cercopithecoides kimeui, Cercopithecoides williamsi, Chemeroni, Chicago press, Chicago university press, Clarendon press, Colobinae, Colobine, Colobine taxa, Colobines, Colobus, Common ancestor, Coppens, Cranial, Cranium, Delson, Dentition, East africa, East turkana, Extant colobines, Extant colobus, Extant species, Extinct, Extinct colobines, Fauna, Fluviatile deposits, Fossil, Fossil hominids, Fossil record, Frag, Frags, Freedman, Frontal process, Genus, Gonial region, Gorge, Howell, Interorbital region, Kenya, Kimeui, Koobi, Koobi fora, Koobi fora formation, Koobi fora research project, Laetoli, Lake rudolf basin, Lake turkana, Large colobine, Large colobines, Large size, Larger size, Leakey, Lemuta member, Long muzzle, Male mand, Mand, Mandible, Mandibular, Mandibular body, Maxillary fossa, Miocene, Molar, Morphological description, Morphological interpretation, Morphology, Napier, Nasal aperture, Nuchal crests, Occlusal plane, Olduvai, Olduvai gorge, Orno, Orno valley, Other colobines, Papionine appearance, Paracolobus, Paracolobus chemeroni, Paracolobus mutiwa, Personal communication, Postcranial, Postcranial elements, Postcranial frags, Postcranial morphology, Postcranial skeleton, Postglabellar sulcus, Postorbital constriction, Primates, Protocone, Ramus, Rhinocolobus, Rhinocolobus turkanaensis, Riverine forest, Rudolf, Savanna, Shungura, Shungura formation, Specific diagnosis, Subfamily, Taxon, Tuff, Turkana, Turkanaensis, Type locality, Type species, Type specimen, Williamsi.
- Teeft :
- Academic press, Braincase, Cercopithecoides, Cercopithecoides kimeui, Cercopithecoides williamsi, Chemeroni, Chicago press, Chicago university press, Clarendon press, Colobinae, Colobine, Colobine taxa, Colobines, Colobus, Common ancestor, Coppens, Cranial, Cranium, Delson, Dentition, East africa, East turkana, Extant colobines, Extant colobus, Extant species, Extinct, Extinct colobines, Fauna, Fluviatile deposits, Fossil, Fossil hominids, Fossil record, Frag, Frags, Freedman, Frontal process, Genus, Gonial region, Gorge, Howell, Interorbital region, Kenya, Kimeui, Koobi, Koobi fora, Koobi fora formation, Koobi fora research project, Laetoli, Lake rudolf basin, Lake turkana, Large colobine, Large colobines, Large size, Larger size, Leakey, Lemuta member, Long muzzle, Male mand, Mand, Mandible, Mandibular, Mandibular body, Maxillary fossa, Miocene, Molar, Morphological description, Morphological interpretation, Morphology, Napier, Nasal aperture, Nuchal crests, Occlusal plane, Olduvai, Olduvai gorge, Orno, Orno valley, Other colobines, Papionine appearance, Paracolobus, Paracolobus chemeroni, Paracolobus mutiwa, Personal communication, Postcranial, Postcranial elements, Postcranial frags, Postcranial morphology, Postcranial skeleton, Postglabellar sulcus, Postorbital constriction, Primates, Protocone, Ramus, Rhinocolobus, Rhinocolobus turkanaensis, Riverine forest, Rudolf, Savanna, Shungura, Shungura formation, Specific diagnosis, Subfamily, Taxon, Tuff, Turkana, Turkanaensis, Type locality, Type species, Type specimen, Williamsi.
Abstract
Three genera and six species of extinct African Plio‐Pleistocene Colobinae are discussed. One new genus, Rhinocolobus and three new species, R. turkanaensis, Cercopithecoides kimeui and Paracolobus mutiwa are named. These colobines show a diversity in postcranial and dental morphology not seen among extant species. Rhinocolobus was most similar to extant Colobus in postcranial morphology and had similar high‐cusped shearing teeth. Cercopithecoides shows a number of postcranial skeletal features typical of terrestrial cercopithecid species and has lower cusped teeth. Paracolobus, while generally more similar to Rhinocolobus than to Cercopithecoides, is intermediate in some features of its postcranial morphology. The distribution of the various taxa among East and South African sites with different palaeoenvironments is generally consistent with the morphological interpretation. With the exception of Cercopithecoides kimeui, which persisted a little longer, these large colobines disappear from the fossil record about 1.8 million years ago. Their disappearance coincides with an interval of increasing aridity documented at Olduvai Gorge, the Omo Valley, and East Turkana.
Url:
DOI: 10.1002/ajpa.1330580207
Affiliations:
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<front><div type="abstract" xml:lang="en">Three genera and six species of extinct African Plio‐Pleistocene Colobinae are discussed. One new genus, Rhinocolobus and three new species, R. turkanaensis, Cercopithecoides kimeui and Paracolobus mutiwa are named. These colobines show a diversity in postcranial and dental morphology not seen among extant species. Rhinocolobus was most similar to extant Colobus in postcranial morphology and had similar high‐cusped shearing teeth. Cercopithecoides shows a number of postcranial skeletal features typical of terrestrial cercopithecid species and has lower cusped teeth. Paracolobus, while generally more similar to Rhinocolobus than to Cercopithecoides, is intermediate in some features of its postcranial morphology. The distribution of the various taxa among East and South African sites with different palaeoenvironments is generally consistent with the morphological interpretation. With the exception of Cercopithecoides kimeui, which persisted a little longer, these large colobines disappear from the fossil record about 1.8 million years ago. Their disappearance coincides with an interval of increasing aridity documented at Olduvai Gorge, the Omo Valley, and East Turkana.</div>
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