| environmental perturbations can be detected through microwear texture analysis in two platyrrhine species from brazilian amazonia. | recent dental microwear studies have shown that fossil species differ from one another in texture attributes-both in terms of central tendency and dispersion. most comparative studies used to interpret these results have relied on poorly provenienced museum samples that are not well-suited to consideration of within species variation in diet. here we present a study of two species of platyrrhine monkeys, alouatta belzebul (n = 60) and sapajus apella (n = 28) from pará state in the brazilian amaz ... | 2015 | 26348252 |