Editing Polyandry (section)

===Partible paternity===
Anthropologist Stephen Beckerman points out that at least 20 tribal societies accept that a child could, and ideally should, have more than one father, referring to it as "[[partible paternity]]".<ref name=beckerman>Beckerman, S., Valentine, P., ''(eds)'' (2002) ''The Theory and Practice of Partible Paternity in South America,'' University Press of Florida</ref> This often results in the shared nurture of a child by multiple fathers in a form of polyandric relation to the mother, although this is not always the case.<ref>{{cite journal|author=Starkweather, Katie|title=A Preliminary Survey of Lesser-Known Polyandrous Societies|date=2009|journal=Nebraska Anthropologist|url=http://digitalcommons.unl.edu/nebanthro/50|access-date=2013-08-04|archive-date=2020-10-01|archive-url=https://web.archive.org/web/20201001170847/https://digitalcommons.unl.edu/nebanthro/50/|url-status=live}}</ref> One of the most well known examples is that of [[Trobriand]] "virgin birth". The matrilineal Trobriand Islanders recognize the importance of sex in reproduction but do not believe the male makes a contribution to the constitution of the child, who therefore remains attached to their mother's lineage alone. The mother's non-resident husbands are not recognized as fathers, although the mother's co-resident brothers are, since they are part of the mother's lineage.