This happens frequently, and we don't see these questions resolved because the scientific method is far from bulletproof. Doubtless many of our modern ideas will be proven incorrect by the next generation; others will learn to make more accurate predictions using more advanced analysis; some paradigms will seem ludicrous in rhetrospect (as some models which were accepted only decades ago seem today). Just how frequently such an obvious problem happens, for the same reasons this case went unnoticed, it is very difficult to estimate.
Please remember to have no heroes or villains, but this just looks plain bad to be honest. I'm lowering my estimation of the quality of Stephen J. Gould's work in this area.
USA today:
Haha. Humans.
The paper itself: