With unilineal descent, parallel cousins are members of the same unilineage . See cross cousin . Unlike bilineal descent , every individual is a member of only one unilineage . Nomadic pastoralists travel with their animals in search of grass and water without a regular route. In contrast, transhumance pastoralists travel with their animals between specific traditional locations, such as summer mountain pastures and winter lowland pastures where they often have established villages.
Patrilineages usually consist of a number of related nuclear families .
With this pattern, people are related if they can trace descent through males to the same male ancestor. Both males and females inherit a patrilineal family membership but only males can pass it on to their descendents. The phratry founding ancestor is so remote genealogically that he or she is usually mythical. Phratries are larger and more inclusive kinship groups than unilineages and clans. Sudanese naming system a kin naming system in which kinsmen are not lumped together under the same terms of reference.