Ancestral loss of the maxillary sinus in Old World monkeys and independent acquisition in Macaca

American Journal of Physical Anthropology
Todd C RaeM L McCrossin

Abstract

Cercopithecoid monkeys are unique among primates in that all species (except macaques) lack a maxillary sinus, an unusual condition among eutherian mammals. Although this uncommon distribution of cranial pneumatization was noted previously, the phylogenetic ramifications have not been investigated fully. Recently, character state optimization analysis of computed tomography (CT) data from extant Old World monkeys suggested that the loss of the sinus may have occurred at the origin of the group, unlike previous hypotheses positing only a reduction in size of the structure. To critically evaluate the "early loss" hypothesis, a recently recovered complete cranium of Victoriapithecus macinnesi from Maboko Island, Kenya, was examined by CT to determine the extent of its cranial pneumatization. This taxon is crucial for evaluating character state evolution in Old World monkeys, due to its phylogenetic position, preceding the cercopithecine/colobine split. CT analysis reveals only cancellous bone lateral of the nasal cavity, indicating that Victoriapithecus does not possess a maxillary sinus. Phylogenetic evaluation of the fossil with extant catarrhine taxa strongly supports the early loss of the sinus in cercopithecoids. The results ...Continue Reading

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Citations

Feb 9, 2006·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Kathryn H ShowsRita Shiang
Apr 23, 2014·Evolutionary Anthropology·Todd C Rae, Thomas Koppe
Oct 15, 2014·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Blaire Van ValkenburghBrent A Craven
Oct 15, 2014·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Abigail A Curtis, Blaire Van Valkenburgh
Sep 28, 2012·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Charles D BluestoneJeffrey T Laitman
Sep 24, 2004·American Journal of Physical Anthropology·James B Rossie
Oct 28, 2008·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Kevin L Kuykendall, Todd C Rae
Oct 28, 2008·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Timothy D SmithAnne M Burrows
Oct 28, 2008·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·James B Rossie
Oct 16, 2010·American Journal of Physical Anthropology·Lauren N ButaricDouglas C Broadfield
Feb 6, 2013·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Nathan HoltonLauren Butaric
Jun 28, 2016·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Anne M BurrowsJérôme Micheletta
Feb 1, 2014·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Paul M Gignac, Nathan J Kley
Jun 3, 2015·The Journal of Experimental Biology·Futoshi MoriTakeshi D Nishimura

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