Love Uni, the saying was that all of the pre-human fossils could all be put into a paper bag. That idea went back to the nineteen twenties or early thirties. Nevertheless it was dishonestly quoted by the willfully ignorant WTBTS into the sixties or later, I think it was repeated in their Evolution book.
Today there are thousands of parts of skeletons of hominins, in some caves up to seventeen almost complete specimens as in the Pit of Bones Cave in Spain. These are unusually small Neanderthal-like humans dated to 430,000 years before present.