it already happened one big time. It was called "The Columbian exchange". Earthworms werent even native to Eastrn US until brought over in root balls on one of Columbus's voyages.
As the author of 1493 wrote. Columbus, i his 4 voyages, managed to stitch up the drifted continents when Pangea tore apart.
(Not entirely true but its factual sounding hyperbole)