WELLINGTON: Giant freshwater crayfish, up to 25cm long, once roamed New Zealand's ancient lakes around 20 million years ago, three times the size of today's native species, a new study has revealed.
The discovery in New Zealand's Central Otago, which centers on the unexpected fossilisation of crayfish molars, marks a significant step forward in understanding ancient freshwater ecosystems, the University of Canterbury said in a release on Thursday (April 17).
