Did Haeckel’s drawings contain errors? Yes. Was he accused of fraud in his time? Yes, but not for those embryo drawings (for the woodcuts that Chuck mentioned — which were also the ones that Gould was talking about). Did Gould/Garstang/de Beer decry some of Haeckel’s ideas? Of course — but note that they’re decrying recapitulation theory, not the notion of developmental similarities. Should those drawings have been removed from the textbooks? Yes, and they mostly were after the Richardson pointed out the errors. Of course, some creationists still maintain that any pictures of embryos at all are now verboten.