Pacman - My Grandfather And Other Animals

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I saw a news article yesterday suggesting that scientists have discovered the earliest ancestor of all vertebrates (and therefore of humans, too). This animal, which lived 540 million years ago, was about a millimeter in diameter and lived amongst grains of sand. It was sort of globular and had a huge mouth (and no anus), so it was rather like that ancient precursor of video games, Pacman! . Its official name is Saccorhytus, which means 'wrinkled bag'. Sometimes I really wonder what medications these so-called 'scientists' are on (if, indeed, it isn't because they have forgotten to take prescribed medication!). but I suppose that we should believe them when they opine that such-and-such a creature is the ancestor of certain other creatures, and so on! They are 'scientists', after all. Even so, I don't think I shall be putting this picture in my family album quite yet. I can trace my family (on my mother's side) back 300 years but I think that 540 million years and goodness knows how many generations might be a little too far to go! Here's the article so you can see the creature and read more about it.