Women were organized matrilineally and men patrilineally, with marriage being endogamous.    From Wordnik.com.  [G. The Americas, 1000-1525] Reference

Despite this relatively recent mixing of haplotypes, extant populations of common eider ducks are strongly structured matrilineally in the circumpolar Arctic.    From Wordnik.com.  [Effects of climate change on the biodiversity of the Arctic] Reference

They also show how historical periods of isolation, combined with little gene flow currently (matrilineally, at least), have contributed to maintain genetic diversity.    From Wordnik.com.  [Effects of climate change on the biodiversity of the Arctic] Reference

Despite the fact that many clans, and by extension, the status of individuals, were once determined matrilineally, the Canadian government's invention of the status card changed this: status became determined by the male alone, creating a severe disconnect between Native people and their cultures.    From Wordnik.com.  [The Dominion: All Stories] Reference

(matrilineally), and my father's family comes from Ireland (matrilineally) and Wales.    From Wordnik.com. Reference