Ancient Collisions Carved the Wallace Line, Explaining a Biodiversity Boundary
A computer-model study links the Wallace Line to a 35-million-year-old continental collision and subsequent climate swings, explaining why Bali’s Asian fauna abruptly shifts to Australian forms on Lombok and nearby islands—and how tectonics and climate history have shaped biodiversity across the region, with nearby lines like Weber’s and Lydekker’s also noted as regional boundaries.