part of part of adjacent to adjacent to anatomical space calcareous tooth jaw skeleton dentition diastema 2 interdental space Many species of mammals have diastemata as a normal feature, most commonly between the incisors and molars MESH:D003970 FMA:77271 UBERON:0013134 Some animals, like horses, that have diastema between incisors and premolars because canines were evolutionarily loss, sometimes have a vestigial canine in the diastema, but the diastema is still considered between the incisor and premolar. A space or gap between two teeth. UBERON:0012111 SCTID:410003009 Wikipedia:Diastema_(dentistry) diastemata