One group of sloths made the quite unlikely shift to water, possibly because of a drying environment in the Miocene. This clever paper shows how they coped with a marine life, just like early whales, by adapting their bone compactness. Our pygmy sloths on the Panamanian island of Isla Escudo de Veraguas are the most recent speciation, around 9,000 years ago. These guys were several species on a sea trip!
© The Earth Times.
Published on The Earth Times
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