After a six-year study of the mammal family tree, scientists now believe that many mammalian species (people included) originated with a tiny rat-like creature that crawled the Earth tens of millions of years ago. Fossils of the Protungulatum donnae look like the best ancestor candidate for the mammal family tree extending back 66 million years, and they preserve evidence that the creature weighed around eight ounces, had a long fuzzy tail, and ate bugs.
From rats? Not from pigs? Or not until much later? Oh, yeah, the pork chop thesis is big too. Here you are:
One recent walk on the wild side is worth noting just for what it shows about how little we really know — and how much we are willing to believe. Much publicity was given in 2013 to the idea that the differences between humans and chimpanzees arise from humans’ hybridization with pigs.
You think this is a joke? Well, yes, but in the current science press it isn’t. That is, “humans are probably the result of multiple generations of backcrossing to chimpanzees, which in nucleotide sequence data comparisons would effectively mask any contribution from pig.” This hypothesis, offered by geneticist and hybridization specialist Eugene McCarthy, incidentally reveals facts about human anatomy not usually offered as evidence by the proponents of the 98-percent-chimpanzee thesis, who don’t seem to be interested in defending themselves against the following thesis: More.
A reader once pointed out that the pig-chimp hybrid would quite properly be called a pimp. So would a hybrid rat pig be called a prig?
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Human origins: The war of trivial explanations
Hat tip: Slawek Bioslawek