In the Lab

Dr. Caitlin Colleary is a vertebrate paleontologist with expertise in the molecules that preserve in fossilized bone. She is particularly interested in the question "What is a fossil?" In the last few decades, it has become clear that this question is much more nuanced than previously considered and that original biological information has the potential to preserve on long timescales.

Dr. Colleary explores how incorporating new techniques and technology can make it possible to examine fossils on a molecular scale, uncovering information previously inaccessible. She has studied pigment preservation in fossilized soft tissues and integument. She is especially interested in fossils that are not considered to be exceptionally preserved, such as bones and teeth, which are commonly found in the fossil record but may also contain soft tissues. Discovering and studying soft tissues and molecular data in the fossil record have the potential to expand what we currently know about ancient animals.

Dr. Colleary started her academic journey at Los Angeles Valley College and transferred to UCLA, where she received a B.A. in anthropology. She received her M.Sc. in paleobiology from the University of Bristol and her Ph.D. in geosciences from Virginia Tech. Before joining the Cleveland Museum of Natural History in January 2020, she was the Biomolecular Mass Spectrometry Postdoctoral Fellow at the Smithsonian Museum Conservation Institute.

Kelly Tapager Fox is a Collections Manager at the Cleveland Museum of Natural History. She has a master’s degree in bioarchaeology, specializing in human and animal skeletal remains, and has worked on archaeological sites on the East Coast and in England. She is currently overseeing the inventory and move of the Museum’s extensive archaeological collections.

Kelly Tapager Fox is a Collections Manager at the Cleveland Museum of Natural History. She has a master’s degree in bioarchaeology, specializing in human and animal skeletal remains, and has worked on archaeological sites on the East Coast and in England. She is currently overseeing the inventory and move of the Museum’s extensive archaeological collections.

Dr. Nicole Burt began working at the Cleveland Museum of Natural History in 2014. Her position as Curator of Human Health & Evolutionary Medicine is part of the legacy of the Museum’s 2007 merger with HealthSpace Cleveland, which made human health a cornerstone of the Museum’s mission and programming. Dr. Burt facilitates the Museum’s ongoing commitment and connection to Cleveland’s medical and health communities. She is an advocate for fostering equitable partnerships between scientists, museums, and the communities with whom they work. As part of this commitment, she has taken on service roles to support community health in Cleveland, such as serving as co-chair and a member of the Cleveland Cuyahoga County Food Policy Coalition Steering Committee.

Dr. Burt is a biological anthropologist who works with both archaeological and modern human populations. Her research centers around the question “What does it mean to be healthy?” and utilizes the best research and educational practices to promote understanding and empower the Museum community to take action. Her interdisciplinary approach combines many methods, including histology, molecular analysis, and even interviews, to explore health through the lens of evolutionary medicine. Methods formation and testing are a key part of her research program, with a focus on microsampling innovation and applying techniques to new fields. In addition to her anthropological research, Dr. Burt contributes to the literature on bioethics in museums, informal learning pedagogy, and creating evolutionary medicine–informed curricula for medical education.

Much of Dr. Burt’s anthropological research uses a technique called stable isotope analysis, which measures the ratio of heavy to light stable isotopes—forms of elements (e.g., carbon or nitrogen) that have the same atomic number but a different number of neutrons—in a sample. Isotopes can be used to reconstruct past diets, study migration, or understand molecular preservation of samples. Dr. Burt’s microsampling technique even allows for reconstruction of maternal diet during pregnancy by analyzing the formation of recovered baby teeth.

Dr. Burt earned her Ph.D. in anthropology from the University of Alberta, a master's degree in forensic science from Michigan State University, and a bachelor's degree from Beloit College.

Research areas: Diet and health, food access, bioethics, early-childhood feeding practice, One Health, osteology, stable isotope reconstruction, methods testing, informal learning pedagogy

Dr. Elizabeth (Ebeth) Sawchuk is a bioarchaeologist who studies modern human evolution and population history in Africa over the past 50,000 years. Her interests include how herding and farming spread into sub-Saharan Africa beginning approximately 5,000 years ago, and how ancient peoples navigated issues of climate change, shifting economic and land-use strategies, and contact with foreign groups. Her work integrates diverse lines of evidence from archaeology, skeletal biology, dental anthropology, and ancient DNA to understand how past peoples coped with major changes in their world and what lessons can be learned from their experiences.

Dr. Sawchuk has worked at field sites across eastern Africa and maintains an active research program in Kenya in collaboration with the Turkana Basin Institute and the National Museums of Kenya. Her research has been published in journals such as Antiquity, African Archaeological Review, the American Journal of Physical Anthropology, Nature, Science, Science Advances, the Proceedings of the National Academy of Sciences, and PLOS One (for more information, check out Dr. Sawchuk’s Google Scholar profile). Her work is funded by the Social Sciences and Humanities Research Council of Canada (SSHRC), the National Science Foundation (NSF), the Wenner-Gren Foundation, the Turkana Basin Institute, and the National Geographic Society.

Dr. Sawchuk advocates for ethical research in anthropology; community-based approaches; and equity, diversity, and inclusion. She is committed to fostering equitable partnerships between archaeologists, curators, and the communities with whom they work, as well as developing best practices for museums’ stewardship of and policies for research on human remains. Recently, she co-organized the first ancient DNA and DNA conference held in Africa, hosted by the National Museums of Kenya.

Dr. Sawchuk earned her Ph.D. in anthropology from the University of Toronto and bachelor’s and master’s degrees, both in anthropology, from the University of Alberta. Prior to joining the Cleveland Museum of Natural History, she served as Banting Postdoctoral Fellow and Adjunct Professor in the Department of Anthropology at the University of Alberta, Canada. She holds additional academic affiliations as an Adjunct Professor in Anthropology at Case Western Reserve University, Ohio; a Research Assistant Professor at Stony Brook University, New York; and a Research Associate with the Turkana Basin Institute, Kenya.

Research areas: Bioarchaeology, ethics, health and disease, dental anthropology, ancient DNA, Africa

Kelly Tapager Fox is a Collections Manager at the Cleveland Museum of Natural History. She has a master’s degree in bioarchaeology, specializing in human and animal skeletal remains, and has worked on archaeological sites on the East Coast and in England. She is currently overseeing the inventory and move of the Museum’s extensive archaeological collections.