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Post by Melanie on Apr 5, 2011 20:35:05 GMT
A new extinct Late Quaternary platyrrhine from Haiti, Insulacebus toussaintiana, is described here from the most complete Caribbean subfossil primate dentition yet recorded, demonstrating the likely coexistence of two primate species on Hispaniola. Like other Caribbean platyrrhines, I. toussaintiana exhibits primitive features resembling early Middle Miocene Patagonian fossils, reflecting an early derivation before the Amazonian community of modern New World anthropoids was configured. This, in combination with the young age of the fossils, provides a unique opportunity to examine a different parallel radiation of platyrrhines that survived into modern times, but is only distantly related to extant mainland forms. Their ecological novelty is indicated by their unique dental proportions, and by their relatively large estimated body weights, possibly an island effect, which places the group in a size class not exploited by mainland South American monkeys. Several features tie the new species to the extinct Jamaican monkey Xenothrix mcgregori, perhaps providing additional evidence for an inter-Antillean clade. www.pnas.org/content/early/2011/01/27/1009161108.abstract |
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Post by Deleted on Apr 6, 2011 7:59:22 GMT
Hi!
Does that new monkey belong to the Atelidae or to the Pitheciidae? Is that known?
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Post by Melanie on Apr 6, 2011 14:46:05 GMT
Good question. As Xenothrix belongs to the Pitheciidae family it might be also the case with Insulacebus. But I don't know it for sure until I've not read the whole PNAS article.
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Post by Deleted on Apr 6, 2011 17:20:06 GMT
Good question. As Xenothrix belongs to the Pitheciidae family it might be also the case with Insulacebus. But I don't know it for sure until I've not read the whole PNAS article. I've included it in the Pitheciidae.  I think this is correct. |
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Post by miki2502989 on Apr 7, 2011 21:28:42 GMT
so why did it not survive?
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Post by Melanie on Apr 8, 2011 18:36:47 GMT
I think there were many reasons. One reason was that there were sea level, climate and vegetation changes in the Caribbean in the early Holocene. And the early humans on the Caribbean islands might have hunted this species too. goo.gl/8LLrm |
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Post by Peter on Dec 3, 2012 18:24:50 GMT
Good question. As Xenothrix belongs to the Pitheciidae family it might be also the case with Insulacebus. But I don't know it for sure until I've not read the whole PNAS article. I've included it in the Pitheciidae. I think this is correct. It might be, but I think the taxonomy of this animal is not yet completely known.   The description paper says: The classification of Insulacebus toussaintiana is as follows: Order Primates (Linnaeus, 1758); Suborder Anthropoidea (Mivart, 1864); Parvorder Platyrrhini (Geoffroy, 1812); Superfamily Ateloidea (Gray, 1825); Tribe Aotini (Poche, 1904); I. toussaintiana gen. et sp. nov. Note that there are two contrasting views on the taxonomic placement of Aotus, with the molecular studies indicating an affinity with the Cebinae (12,13) and morphological evidence suggesting a relationship with Pithecinae (14). |
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Post by surroundx on Oct 25, 2015 5:35:58 GMT
Borroto-Páez, Rafael, Mancina, Carlos A., Woods, Charles A. and Kilpatrick, C. William. (2012). Chapter 7: Checklist: Updated Checklist of Endemic Terrestrial Mammals of the West Indies, pp. 389-415. In: Borroto-Páez, Rafael, Woods, Charles A. and Sergile, F. E. (eds.). Terrestrial Mammals of the West Indies: Contributions. Gainesville, Florida: Florida Museum of Natural History and Wacahoota Press. 482 pp. |
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The description paper says: