Wildlife officers in Ireland have uncovered fossilized shark teeth estimated at 330 million years old in the Burren limestone. The teeth, from Psephodus magnus, belong to an ancient group built for crushing prey rather than hunting like modern predators. The find underscores how citizen eyes can surface clues to Earth’s distant past—and the surprising diversity of Carboniferous sharks.
Giant Joro spiders, originally from East Asia, are rapidly expanding across the United States. Known for their large size and impressive webbing, they can survive colder conditions and adapt to urban environments, helping them move into new regions. Researchers say they’re unlikely to pose a threat to people, though their arrival is shifting local insect populations, tracked partly through citizen science.
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