The Early Cambrian (also known as the Caerfai, Waucoban, or Georgian) is the first of three geological epochs of the Cambrian period. It spans the time between 542 ± 0.3 Ma and 513 ± 2 Ma (million years ago). The Cambrian explosion of complex organisms occurred during the Early Cambrian. The Early Cambrian is divided into two unnamed ICS stages. The rocks of the Early Cambrian are said to belong to the Lower Cambrian part of the stratigraphic succession. The Early Cambrian was a time of extreme change in both life on earth (Such as the Cambrian explosion) and in the geological land scape (such as the breakup of the Ediacaran supercontient pannotia). Abundant simple worm traces appeared to be common during during the Earliest Cambrian and in the late Ediacaran period but however they were s