👉 Oligacanthorhynchidae are a group of extinct, small-to-medium-sized mammals that lived in Africa during the late Cretaceous period approximately 69 to 58 million years ago. These creatures were characterized by their large and elongated heads, which allowed them to reach high altitudes. They had powerful jaws that could crush bones with ease. Oligacanthorhynchidae are known for their distinctive facial features, including a flattened snout and a