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True crabs—members of the infraorder Brachyura—are an evolutionary success story. These ten-limbed crustaceans can be found from the darkest depths of the ocean all the way up onto land, and with nearly 8000 described species, they dwarf the diversity of their closest kin, including hermit crabs, lobsters, and crayfish. But what gave them such an evolutionary edge? According to analyses published as a preprint, it could be that they gave up on going forward.
Learn more: https://scim.ag/4dYkaFv
FOOTAGE CREDIT: KLAUDIE BARTELINK/LEARNING BY ACTION/STICHTING NATUURBEELDEN VIA OPENIMAGES | CC BY-SA
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