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Citations since 2017
7 Research Items
Evan is a 6th year PhD Candidate within the Department of Ecology and Evolutionary Biology at the University of California, Los Angeles. He received his M.S. in Geosciences from East Tennessee State University in 2016. Current research interests focus on discerning the dynamics underlying the distribution of body mass and other functional traits in North American ungulates throughout the Cenozoic.
An organism’s body mass is closely related to its physiology, life history, and evolutionary dynamics. Previous studies indicate that both large herbivore and carnivore body masses show persistent, and at times coincident, increases through the Cenozoic. These parallel increases in body mass suggest an ecological link between the two guilds. Here,...
Body mass is intertwined with organismal physiology, morphology, life history, and both microevolutionary and macroevolutionary dynamics. Accordingly, the evolution of mammalian body mass has seen considerable attention, particularly in the context of climate and environmental change throughout the Cenozoic. Prior analyses document persistent incre...
Two peccary species, Mylohyus elmorei and Prosthennops serus are described from the medium-bodied fauna of the Gray Fossil Site (GFS) of northeastern Tennessee. This site, recognized as an oak-hickory forest, is latest Hemphillian or earliest Blancan based on mammalian biochronology, with an estimated age of 4.9–4.5 Ma. The GFS represents the only...
Body mass is deeply integrated with an organisms’ ecology, physiology, morphology, and overall life history. Accordingly, the evolution of mammalian body mass has seen considerable attention, particularly with in the context of climate and environmental change throughout the Cenozoic. Specifically, prior analyses document persistent increases in bo...
Body mass is intertwined with organismal physiology, morphology, life history, and both microevolutionary (i.e. decreased energy requirements, predation deterrent, thermoregulation, etc.) and macroevolutionary (i.e. species persistence, biodiversity, etc.) dynamics. Previous studies document the distribution of the well-sampled North American ungul...
Hemphillian localities are rare within the eastern United States, being predominantly restricted to Florida. The Gray Fossil Site (GFS), constrained to approximately 7 to 4.5 Ma, is one of the few sites that represent this time interval through the preservation of a diverse biota from a lacustrine setting. Flora identified within the site indicates...
Analysis of the Gray Fossil Site peccary material indicates the presence of up to three species. Comparisons with the tayassuid material known from the Tyner Farm and Bone Valley Formation of Florida allows the identification of Mylohyus elmorei and at the GFS. Within the GFS material, Prosthennops cf. P. serus and cf. Catagonus sp. are also tentat...