Rethinking Antillothrix

The Mandible and Its Implications

Bibliographic Data

ID19390102
AuthorsAlfred L Rosenberger (0000-0002-3422-4884, Department of Anthropology and Archaeology Brooklyn College, The City University of New York Brooklyn, New York, corresponding author), Zachary S Klukkert (0000-0001-5006-8810, New York Consortium in Evolutionary Primatology (NYCEP) New York, New York), Siobhán B Cooke (0000-0001-8265-6705, Department of Anthropology Northeastern Illinois University Chicago, Illinois), Renato Rímoli (Department of Biology Universidad Autónoma de Santo Domingo (UASD), Ciudad Universitaria Santo Domingo Dominican Republic), Renato O Rímoli (Universidad Autónoma de Santo Domingo)
Year2013
Volume75
Issue8
Pages825-836
Publication date2013-08-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Primatology (JOURNAL)
Journal identifiersISSN: 0275-2565 • E-ISSN: 1098-2345
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajp.22144
PMID23526607
OpenAlexW1827222458
LanguageEN
Citations received7
References cited26

A mandible of the Hispaniolan primate Antillothrix bernensis, virtually complete and providing the only definitive evidence of the species' lower dentition, has been discovered in a submerged Dominican Republic cave. The new specimen enables a more certain assessment of the species' phylogenetic position than previously possible. It belongs to the same individual as the nearly complete young adult cranium and postrcranial elements found earlier at the same site. Of the extinct Caribbean platyrrhines, the jaw compares well with partial mandibles representing Xenothrix mcgregori, from Jamaica. Among living platyrrhines, it closely resembles Callicebus and Aotus, as documented in a biometric analysis employing three-dimensional geometric morphometrics of Callicebus, Aotus, Pithecia, Chiropotes, Cacajao, Cebus, and Saimiri. The jaw falls within the morphological variability of Callicebus and Aotus in this three-dimensional analysis, is otherwise most similar to Pithecia, and is distinct from cebines. Lower molars resemble the Haitian primate, Insulacebus, a genus known by a full dentition and gnathic fragments with a pattern of derived features also present in Xenothrix. Considering the available craniodental and postcranial evidence, we conclude that Antillothrix is not properly classified as cebid but rather is best grouped with Pitheciidae, an idea long central to discussions of the phylogenetic affinities of the Greater Antillean primates. Since Antillothrix and Insulacebus are more primitive anatomically than the highly modified Xenothrix, it is tempting to surmise that the origins of the latter involved a vicariance or dispersal event via Hispaniola isolating it on Jamaica

Biology · Cenozoic · Clade · Dentition · Eutheria · Evolutionary biology · Genus · Morphometrics · Phylogenetic tree · Postcrania · Primate · Taxon · Vicariance · Zoology · Evolution and Paleontology Studies · Morphological variations and asymmetry · Primate Behavior and Ecology · Paleontology

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