Geologists sometimes do not use a single stratigraphic layer in paleomagnetic courting, since you want multiple layers to find the forwards and backwards pattern of flipping of Earth’s magnetic area. Fossils of a South African hominin, Australopithecus sediba, have been capable of be dated using this method because the fossils have been found embedded in a stratum very near certainly one of these magnetic reversals. They use absolute courting methods,