1. Body mass predicts isotope enrichment in herbivorous mammals Tejada-Lara, Julia Victoria; MacFadden, Bruce J.; Bermudez, Lizette; Rojas, Gianmarco; Salas-Gismondi, Rodolfo; Flynn, John J. 2018 Articles Body weightEcologyStable isotopes in ecological researchMammalsIsotope separationSlothsPaleontology