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University of Otago palaeontologist Associate Prof Daphne Lee will hold two public talks - one in Middlemarch and another at the Otago Museum later this month - on what has been discovered and why it is so important to science.
Another talk will be held in Balclutha by students of Prof Lee.
Prof Lee has been one of the leading voices in the campaign to save the maar from a plan by the Australian company Plaman International to expand the former mining operation at the site.
"I've given lots of talks before where I've mentioned Foulden as one of the different fossil sites we have in Otago but I don't think I've ever emphasised this was the main one until all of this blew up," she said.
Today's talk in Middlemarch will be held in the Strath Taieri Community Hall from 1pm to 3pm.