 The order in which teeth emerge through the gums is known as the dental eruption sequence.Rapidly developing anthropoid primates such as macaques, chimpanzees, and australopithecines have an eruption sequence of M1 I1 I2 M2 P3 P4 C M3, whereas anatomically modern humans have the sequence M1 I1 I2 C P3 P4 M2 M3.The later that tooth emergence begins, the earlier the anterior teeth (I1–P4) appear in the sequence.