Identify the scientific methods used by primatologist biological anthropologist to study nonhuman primates. Select one species from each of the following group's nocturnal prosimians, apes, and monkeys totaling three distinct species and describe the biological and behavioral data primatologist would need to collect in order to study them. How would scientist go about this? Complete a phylogenetic tree of new world monkeys, old world monkeys, apes and humans. Describe biological characteristics used to distinguish taxa from one another. Explain the significance of the phylogenetic tree and explain how it backs up evolutionary theory