Palm trees of the tribe Trachycarpeae once thrived in what is now subarctic Canada, according to an analysis of fossilized phytoliths — microscopic siliceous structures produced in specific tissues by many plant families — from Canada’s Northwest Territories. Palm phytoliths from the Eocene Giraffe locality (a-q) and modern phytoliths extracted from foliage of the coryphoid palm Trachycarpus fortunei. Image credit: Siver et al., doi:...
