👉 Gemmatimonadales is a group of extinct mammals that lived in Europe during the Late Cretaceous period, approximately 58-49 million years ago. They were part of the Monadellidae family and were characterized by their distinctive tooth arrangement, which included an upper jaw with two sets of teeth (the "gums" or "teeth") on each side, a lower jaw with one set of teeth, and a mandible with four pairs of teeth on
