The present study is based on the examination of 89 various mammal skulls and 14 human skulls from the institute for Anatomy and Cell Biology Greifswald. The study compares the morphology of the bony skulls of mammals with those of humans. This is based on orthodontic measuring points as they have been used in humans for a long time. All the measuring points used in orthodontics are also found on the skulls of mammals, so that a common cranial structure can be assumed. Systematic studies on a larger group of mammals with an orthodontic approach have not yet been carried out, as far as can be seen. The aim of this scientific work is thus also to create a corresponding data basis. The skulls are divided into groups according to the taxonomy used in the literature. From the order of primates the hominoidea, platyrrhini, cercopithecoidea and lemuriformes were studied, among the carnivora the feliformia, canidae, ursidae and pinnipedia. Among the cetartiodactyla, ruminantia and suidae were measured, among the mesaxonia the equidae. In a first part of the study the classical morphometry is applied. There by classical orthodontic measuring points and classical indices are used. In a second part the geometric morphometry is applied. As a result of the so-called procrustes-transformation, the measured skulls can be compared in shape and form regardless of size. For all measurements, the differences and similarities between humans and the individual mammal species are worked out and ...