For decades, paleoanthropologists assumed that hominins — the lineage leading to modern humans — gradually grew larger over millions of years. New research led by the University of Reading complicates that picture considerably: the biggest jump in body size happened around 2 to 2.5 million years ago, with the appearance of Homo rudolfensis or Homo erectus/ergaster; Homo floresiensis and Homo naledi stayed small, with the early hominin...
