Sentence:  What is striking in the innovations of both Solon and Cleisthenes is the establishment of a governing body that was <WSD>suprafamilial</WSD>, in which the members of the council functioned as "citizens"—as representatives of the city-state ("polis") as such—rather than as representatives of the family ("oikos") or clan ("genos"). 
Meaning of the word marked with <WSD> tags:  Of a level of society higher than family.