Scientists from the University of Bristol and the Natural History Museum in London have reconstructed the evolutionary history of the chelicerates, the mega-diverse group of 110,000 arthropods that includes spiders, scorpions, mites and ticks.

There is a phenomenal diversity of mites (as shown by these two examples),
and ticks are close relatives [Credit: David Walter]They found, for the first time, genomic evidence that mites and…

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Source: archeo