I am a PhD candidate in the Department of Geology and Geophysics at the University of Wyoming working with my advisor Dr. Mark Clementz to study the paleoecology of awesome animals like sloths, wolves, and crocodiles (oh my!) using things like dental microwear, stable isotopes, and other methods. I have a number of projects going at the moment including:
- Using stable isotope analysis to improve our understanding of tree and ground sloths
- Examining pack dynamics of modern wolves via dental microwear textures
- And assessing fossil crocodylian breeding habitats by quantifying tooth fossils
Folks who donate to my research (see below) will receive occasional email updates about all of these projects and more!
I completed my Masters of Science in 2012 at Vanderbilt University (my thesis) and before that I double-majored in Ecology & Evolutionary Biology and Environmental Geology at the University of California, Santa Cruz in 2009.
If you're a fellow scientist, please connect with me on Research Gate.
You can download my CV here.
- Today a Guy Carrying a Sack of Sloth Teeth Sat Next to Me by Brian Anderson of Motherboard
- Mummified Poop Reveals Ancient Sloth Ate Mormon Tea and Saltbush by Laura Geggel, Senior Writer at Live Science
- Fossils and painted nails on a Sloth?: Q & A with Ryan Haupt on National Fossil Day by Scott Maguffin for AGU's The Bridge
- How Cougars Survived the Ice Age by Brian Switek published on nationalgeographic.com
- Cougars’ diverse diet helped them survive the mass extinction that wiped out the saber-tooth cat, American lion by ResearchNews@Vanderbilt
- Black Gold by Matt Kaplan published in The Economist
- Ancient Cougars Survived Ice Age Extinction By Not Being PIcky Eaters, Study Finds by Blake de Pastino in Western Digs
Doing research costs money. If you would like to donate a few dollars towards helping me complete my various research projects I would be extremely grateful! Any and all funds will be used solely for research and research related activities. As a brief token of appreciation, I will send all donors occasional research updates and news.
- DeSantis, L.R.G., Schubert, B.W., Schmitt-Linville, E., Ungar, P.S., Donohue, S.L., and Haupt, R.J. 2015. Dental Microwear Textures of Carnivorans from the La Brea Tar Pits, California, and Potential Extinction Implications. La Brea and Beyond: The Paleontology of Asphalt-Preserved Biotas, 42: 37-52.
- Cliffe, R.N., Haupt, R.J., Avey-Arroyo, J.A., and R.P. Wilson. Sloths like it hot: ambient temperature modulates food intake in the brown-throated sloth (Bradypus variegatus). PeerJ 3:e875.
- DeSantis, L.R.G. and R.J. Haupt. 2014. Cougars' key to survival through the late Pleistocene extinction: insights from dental microwear texture analysis. Biology Letters 10(4): 20140203.
- Veter, N.M., DeSantis, L.R.G., Yann, L.T., Donohue, S.L., Haupt, R.J., Corapi, S.E., Fathel, S.L., Gootee, E.K., Loffredo, L.F., Romer, J.L., and Velkovsky, S.M. 2013. Is Rappoport's rule a recent phenomenon? A deep time perspective on potential causal mechanisms. Biology Letters 9(5): 20130398.
- Yann, L.T., DeSantis, L.R.G., Haupt, R.J., Romer, J.L., Corapi, S.E., and Ettenson, D.J. 2013. The application of an oxygen isotope aridity index to terrestrial paleoenvironmental reconstructions in Pleistocene North America. Paleobiology, 39(4): 576-590.
- Haupt, R.J., DeSantis, L.R.G., Green, J.L., and P.S. Ungar. 2013. Dental microwear texture as a proxy for diet in xenarthrans. Journal of Mammalogy 94(4): 856-866.
Abstracts and Presentations:
- Haupt, R.J. 2016. Using very very tiny things that are a bit heavier than almost the same very very tiny things to understand much bigger things like animals. American Geophysical Union Fall Meeting, PA53B.
- Haupt, R.J., McDonald, H.G.., and Clementz, M.T. 2016. Dietary preferences of the Shasta ground sloth (Nothrotheriops shastensis) inferred from stable isotope analysis of coprolites. Society of Vertebrate Paleontology Abstracts of Papers, 76th Annual Meeting: 150
- Haupt, R.J., Clementz, M.T., DeSantis, L.R.G., and Fox-Dobbs, K. 2016. Inferring sociality in extinct Carnivorans from dental microwear textures: Lessons from bone consumption and pack status in modern Yellowstone wolves. Geological Society of America Annual Meeting, 48(7): 17-15.
- Haupt, R.J., Hastings, A.K., Clementz, M.T. Are tiny teeth indicators of a crocodylian nesting ground or juvenile refuge in the Miocene of Panama? 22nd Annual Tate Museum Conference.
Haupt, R.J., DeSantis, L.R.G., Koch, P.L. 2016. Health and hunting success in Florida Panthers (Puma concolor coryi) as revealed by stable isotope analysis and dental microwear textures. Southeastern Association of Vertebrate Paleontologists Annual Meeting: 19
Haupt, R.J. 2016. Looking in and talking out: Proxy methods to explain how pumas survived the LPE and how to tell the public about it. Ohio Northern University Department of Biological & Allied Health Sciences Seminar Speaker Series.
- Haupt, R.J., Wheatley, P.W., Padilla, A., Barnhart, C.J. 2015. The Success of Podcasting as a Success for Science Outreach. American Geophysical Union Fall Meeting, PA24A-04.
- Padilla, A., Haupt, R.J., Wheatley, P.W., and Barnhart, C.J. 2015. Podcasting as an Effective Medium for Direct Science Communication and Outreach to the General Public. American Geophysical Union Fall Meeting, ED41B-06.
- Haupt, R.J., Meyer, H.W., O’Connor, C.J., Desai, D., and Hattori, K.E. 2015. Developing and delivering digital content through multiple media avenues and exhibits at Florissant Fossil Beds National Monument, Colorado. Geological Society of America Annual Meeting, No. 184-4.
- Haupt, R.J., Hastings, A.K., and Clementz, M.T. 2015. Quantitative analysis of fossil crocodylian teeth to identify a potential juvenile refuge or nesting ground in the Miocene of Panama. Society of Vertebrate Paleontology Abstracts of Papers, 75th Annual Meeting: 59
- Haupt, R.J., Vietti, L.A., Kerr, T.J., and M.T. Clementz. Overview and significance of the University of Wyoming Paleozoic and Mesozoic Vertebrate and Invertebrate Fossils Collections. Geological Society of America: Rocky Mountain Section - 67th Annual Meeting Abstracts with Programs 47(6): 12.
- Kerr, T.J., Vietti, L.A., Haupt, R.J., and M.T. Clementz. Overview and significance of the University of Wyoming Cenozoic Vertebrate Fossil Collection. Geological Society of America: Rocky Mountain Section - 67th Annual Meeting Abstracts with Programs 47(6): 12.
- Haupt, R.J. and A.K. Hastings. 2015. Potential record of a Panamanian Miocene fossil crocodylian nesting ground at Hodge's Hill Microsite. 4th Meeting of the Network for Neotropical Biogeography Program and Abstracts: 19.
- Haupt, R.J. and L.R.G. DeSantis. 2014. Paleoecological insights from dental microwear textures of extinct xenarthrans during glacial and interglacial periods in Pleistocene Florida. Society of Vertebrate Paleontology Abstracts of Papers, 74th Annual Meeting: 144.
- Haupt, R.J. 2014. The Big Cats of La Brea: How Pumas May Have Survived the Late Pleistocene Extinction in North America. 20th Annual Tate Museum Conference.
- Haupt, R.J. 2014. Paleoecological insights from dental microwear of extinct xenarthrans. Smithsonian Tropical Research Institute Fellow and Interns Symposium.
- Haupt, R.J. 2014. Dental Microwear of Modern Xenarthran Dentin and Implications for Fossil Paleoecology. Smithsonian Tropical Research Institute Center for Tropical Paleontology and Archeology invited Paleotalk.
- Haupt, R.J. and DeSantis, L.R.G. 2013. Insights from Dental Microwear Texture Analysis into the Survival of Cougars (Puma concolor) through the Late Pleistocene Extinction. Society of Vertebrate Paleontology Abstracts of Papers, 73rd Annual Meeting: 140.
- Lashinsky, N., DeSantis, L.R.G., Yann, L.T., Donohue, S.L., and Haupt, R.J. 2013. Is Rappoport's rule a recent phenomenon? A deep time perspective on potential causal mechanisms. Society of Vertebrate Paleontology Abstracts of Papers, 73rd Annual Meeting: 159-160.
- Haupt, R.J., Eckrich, C.A., Pratt, A.C., Newsome, S.D., and Williams, D.G. 2013. Isotope ecology and inquiry-based learning using on-campus museum resources: examining niche partitioning between deer mice and greater sage-grouse in Wyoming. Front Range Isotope Day Annual Meeting.
- Haupt, R.J. and DeSantis, L.R.G. 2012. Integrating Dental Microwear Texture Analysis and Geochemical Data in an Extant Carnivore (Puma concolor): Lessons Learned from Modern Ecology of Applications to Paleoecological Studies. Society of Vertebrate Paleontology Abstracts of Papers, 72nd Annual Meeting: 107.
- Haupt, R.J. and DeSantis, L.R.G. 2012. Dentin as a dietary indicator in extant xenarthrans and its applicability to the fossil record. Southeastern Association of Vertebrate Paleontologists Annual Meeting.
- Haupt, R.J., DeSantis, L., and Green, J. 2011. Dental Microwear Texture Analysis of Dentin. Society of Vertebrate Paleontology Abstracts of Papers, 71st Annual Meeting: 33.
- Yann, L., Haupt, R.J., DeSantis, L., Romer, J., and Corapi, S. 2011. Mammalian Oxygen Isotope Values as an Indicator of Regional Climatic Differences in the Pleistocene North America. Society of Vertebrate Paleontology Abstracts of Papers, 71st Annual Meeting: 44.
- Yann, L., Haupt, R.J., DeSantis, L., Romer, J., and Corapi, S. 2011. Mammalian Oxygen Isotope Values as an Indicator of Regional Climatic Differences in the Pleistocene North America. Southeastern Association of Vertebrate Paleontologists Annual Meeting.
- Haupt R.J., Wheatley P.V., and Barnhart C. 2010. Science Podcasting as a Means of Disseminating Current Peer-Reviewed Work to the Lay Public. Society of Vertebrate Paleontology Abstracts of Papers, 70th Annual Meeting, Education & Outreach Abstracts: 2.
- Haupt R.J., Oliphant, D.Q., Zachos, J.C., Murphy, B.H., and Moore C. 2009. Using the iPhone as a Brunton: Techniques and Applications. Geological Society of American Annual Meeting Abstracts, 41(7): 277.