Willi Henig ...a. Used outgroup analysis to distinguish derived (monophyletic) from primitive (paraphyletic) similarity. b. Was an insect taxonomist, and believed that taxonomists who had spent their entire life working on a given group of organisms had excellent intuition about which traits were most important for constructing a phylogenetic tree. c. Came up with a reliable quantitative way of constructing many phylogenetic trees, and then determining which one of them was most probable, by using outgroup analysis and choosing the one that requires the fewest evolutionary changes. c. Developed a method of phylogenetic analysis that allowed assessment of the intensity of kin selection. d. Is considered the founder of the field of Paleontology.