Galesaurids are some of the most primitive of the Epicynodontia.[2] They may have resembled basal cynodonts such as the Procynosuchidae, and they may have descended from a procynosuchid-like ancestor, but the galesaurids were more advanced than the basal Cynodontia. It is clear that, like many other epicynodontians, many Galesaurids had a complete secondary palate, which allowed them to swallow food while breathing, and the dentary bone was enlarged relative to those of their ancestors. Their temporal fenestrae are much larger than those of the procynosuchids, but not as large as in more advanced epicynodontians. Their snouts are broad, rather than tall, and they may have walked erect, with the legs beneath the body like most other cynodontians.
