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Researchers compared the fingerprints of three koalas killed by cars, a chimp that died in captivity, and human ones. The koala prints were more like human ones than the chimp’s were.
Even more amazing, primates and koalas’ ancestors branched apart between 70 and 80 million years ago, suggesting that both independently evolved their fingerprints.
Ross Pomeroy, “The Most Amazing Fact About Koalas” at RealClearScience
Maybe someone could do that math on the likelihood of convergent evolution of such a detail in that period of time. Koalas are marsupial mammals.
Also, why aren’t the chimp prints more like those of humans?
See also: Evolution appears to converge on goals—but in Darwinian terms, is that possible?