The Glossopteris-dominated flora that characterised high-latitude Gondwana collapsed in Australia around 370,000 years before the Permian-Triassic boundary, with this flora's collapse being less constrained in western Gondwana but still likely occurring a few hundred thousand years before the boundary. The collapse of this flora is indirectly marked by an abrupt change in river morphology from meandering to braided river systems, signifying the widespread demise of rooted plants.
The Glossopteris-dominated flora that characteri,sed high-latitude Gondwana c,ollapsed in Australia around 370000 years before the Permian-Triassic boundary with this flora's collapse being less constrained in western Gondwana but still likely occurring a few hundred thousand years .before the boundary The collapse of this flora is indirectly marked by an abrupt change in river morphology from meandering to braided river systems, signifying the widespread demise of rooted plants.