Contested early Predynastic Upper Egyptian culture named for burials at Deir Tasa, notable for the earliest black-topped pottery; some scholars treat it as inseparable from the Badarian culture rather than a distinct entity.
Either transitioned into / was absorbed by the Badarian culture, or (per the majority current view) was never a truly separate culture at all -- see confidence note.
Discusses the Tasian designation and its relationship to Badarian material culture.