Three-Dimensional Geometric Morphometric Analysis of Treeshrew (Scandentia) Lower Molars: Insight into Dental Variation and Systematics

The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology
Keegan R SeligMary T Silcox

Abstract

Scandentia (treeshrews) is an order of small-bodied Indomalayan mammals generally agreed to be a member of Euarchonta with Primates and Dermoptera (colugos). However, intraordinal relationships among treeshrews are less well understood. Although recent studies have begun to clarify treeshrew taxonomy using morphological and molecular datasets, previous analysis of treeshrew dentition has yielded little clarity in terms of species-level relationships within the order. However, these studies made use of character-based methods, scoring traits across the dental arcade, which depend on there being clear differences among taxa that can be encapsulated in coding schemes. Geometric morphometrics has the potential to capture subtler shape variation, so it may be better for examining similarities among closely related taxa whose teeth have a similar bauplan. We used three-dimensional geometric morphometrics on a sample of treeshrew lower second molars and compared the patterns of variation to the results of previous studies. We captured 19 landmarks on a sample of 43 specimens representing 15 species. Using specimen-based principal components analysis and between-group principal component analysis, the two treeshrew families (Tupaiidae ...Continue Reading

References

Jan 1, 1966·Folia primatologica; international journal of primatology·M C McKenna
May 10, 2005·Molecular Phylogenetics and Evolution·Link E OlsonRobert D Martin
Apr 22, 2009·American Journal of Physical Anthropology·Matthew M SkinnerJean-Jacques Hublin
Apr 22, 2009·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Jess White
Apr 9, 2010·International Journal of Rheumatic Diseases·Annie Wai-Chee KungSophie Vanbelle
May 14, 2011·Molecular Phylogenetics and Evolution·Trina E RobertsLink E Olson
Nov 2, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Siobhán B Cooke
Feb 28, 2015·Folia primatologica; international journal of primatology·Mónica Nova DelgadoJordi Galbany
May 15, 2016·Journal of Human Evolution·Beatriz GamarraAlejandro Pérez-Pérez
Jun 18, 2016·American Journal of Physical Anthropology·Elizabeth M St Clair, Doug M Boyer
Sep 22, 2016·Journal of Human Evolution·Mónica Nova DelgadoAlejandro Pérez-Pérez
Dec 16, 2017·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Thaddaeus J BuserAdam P Summers

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Citations

Dec 6, 2019·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Kelsey PaddockTimothy D Smith

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