Researchers have found remains of the oldest spider crabs on record: 100-million-year-old crustaceans who inhabited what's now northern Spain. These fossils are older than spider crab fossils found nearby in France, which were "some millions of years younger." What's all the fuss about? Scientists say that shortly after these spider crabs lived, they and similar animals disappeared from the area, suggesting that the reefs that were their natural habitat vanished — an example of what the loss of such an area can do to a species. We hope they didn't feel any pain. [Source]
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