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Research Conducted at the Lab

Welcome to the Ungar Lab

The focus of research in our laboratory is the ecology and evolution of past mammals, especially human ancestors.  More specifically, we develop new approaches for using teeth to reconstruct diets of past species so we can better understand the impact of environmental change on past life.  We also use our techniques for clinically-oriented research and to document oral health in living peoples transitioning from traditional foraging to village life.    Our next big project is to apply lessons learned to better understand the effects of climate change today on Arctic ecology and peoples. 

The laboratory trains and supports research of graduate students and undergraduates at the University of Arkansas and other universities, and fosters collaborations among researchers at many institutions across the US and abroad.  Our projects vary from efforts to reconstruct habitats and diets of past species to developing new approaches to infer the etiology of dental erosion in clinical populations.  We use many approaches to studying tooth wear and shape, including  confocal profilometry, laser scanning, and digital photogrammetry combined with scale-sensitive fractal analysis and geographic information systems software.

Please use the links on this site to explore our research projects, participants, and facilities. And don’t hesitate to contact me if you are interested in joining our laboratory as a collaborator, graduate student, or undergraduate honors student.

Peter Ungar

Peter Ungar, Ph.D.
Distinguished Professor and Director of Environmental Dynamics
University of Arkansas


Evolution’s Bite:  A Story of Teeth, Diet, and Human Origins (Japanese Edition)

Peter S. Ungar

Copyright 2019


Publishing Group

Evolution’s Bite:  A Story of Teeth, Diet, and Human Origins  (Chinese Edition)

Peter S. Ungar

Copyright 2019

Grand China

Publishing Group

Teeth: A Very Short Introduction

Peter S. Ungar

ISBN: 0199670595

Teeth:  A Very Short Introduction (Korean Edition)

Peter S. Ungar

Copyright 2018, Munhakdongne Publishing Group

Mammal Teeth: Origin, Evolution, and Diversity

Peter S. Ungar
ISBN: 0801896681

Evolution of the Human Diet

Peter S. Ungar (Ed.)

ISBN: 0195183479


Dental topographic analysis is the study of functional aspects of tooth form, combining 3D scanning with quantitative shape characterization.  Our laboratory pioneered the use of laser scanning and geographic information systems to model dental cusps as mountains, fissures as valleys, etc.  The resulting data are used to infer diets from fossil species, and to consider how tooth shape and function change with gross wear  over the course of a lifetime.  Our focus has been on extant primates and other mammals as well as fossil hominins and other extinct primates.  We have also developed, with colleagues, clinical applications for dental topographic analysis.

Dental microwear texture analysis is the study of microscopic-scale dental wear surface texture to infer tooth use and diet in fossil species. Our lab has pioneered, with colleagues, the use of white-light confocal profilometry and scale-sensitive fractal analysis for automated characterization of texture patterns related to specific diet types.   We have applied this technique to a broad spectrum of mammals, both extant and extinct, to infer diet and reconstruct past environments. We have also developed, with colleagues, clinical applications for dental microwear texture analysis.

News & Updates


Wild Thing: Human Teeth vs. Other Mammalian Teeth Thinking more about our teeth The "true" human diet  It’s not that your teeth are too big: your jaw is too small

A retrospective on 2016

2016 was a productive year for the Ungar Lab. Our visiting graduate researcher, Li- Cheng Hua, received his Ph.D. and is now a postdoc in the Department of Chemisty and Biochemistry working with Professor Ryan Tian.  We have nine wonderful undergraduate honors student...

The “Ungargrads” – 2018 update!

The Ungargraduates include a baker's dozen  honors undergraduate students this year -- including six seniors!!!!  They are all doing amazing work.  To learn more about what each researcher is doing check out their bios. I am THRILLED to announce that all four of our...

Teeth book featured on blog

Dr. Peter Ungar's book Teeth: A Very Short Introduction was recently featured on the Thammasat University Libraries' (Bangkok, Thailand) blog. Check out the blog post.

End of the semester wrap-up

The Ungar Lab not only started the semester strong, but we are finishing the 2015-2016 school year strong as well. Undergraduates and graduate students in the lab presented their research at the American Association of Physical Anthropology (see pictures below), and...

Presentations at the AAPA 85th Annual Meeting

This week the Ungar Lab will be busy in Atlanta, GA at the American Association of Physical Anthropologists Annual meeting. Two of our graduate students have been chosen to participate in the AAPA COD-WIN Graduate Student Women’s Professional Development Workshop. The...

Happy holidays from the Ungar Lab!

    As we end the semester here in Arkansas, we're getting ready for the holiday season. We hope that your own holidays - be it Hannukah or Christmas or even a happy Saturnalia - are just as wonderful! And don't forget to have a happy and healthy start...