Definition of "biota"

Although the broad macroevolutionary consequences of mass extinctions are well known (as in the dinosaurs-mammals changeover), their long-term effects on the temporal and spatial dynamics of clades and biotas are rarely investigated.

2009 February 6, Andrew Z. Krug et al., “Signature of the End-Cretaceous Mass Extinction in the Modern Biota”, in Science‎, volume 323, number 5915, pages 767–771