Scientific vs Creationist Frauds and Hoaxes

these were brought up as scientific frauds by some creationists in another discussion:- Paul Kammerer, who allegedly manufactured nuptial pads on the feet of midwife toads- Reiner Protsch, who falsified and manipulated dating of human fossils- Viswat Jit Gupta, Indian professor, who also falsified some fossils- Charles Darwin, who retouched photographs of human and ape's facial expressions- the stuff already discussed here - Piltdown skull, Archeraptor, Haeckel's embryos, pepper moth-------------I think, that Kammerer's case is not so clear and maybe it was not his fraud or perhaps it was not any fraud after all(Lamarckian Experimentalist Paul Kammerer - Fraud Or Founder Of Epigenetics? | Science 2.0)Protsch - OK, fraud
Gupta - don't know any details
Darwin - don't know what is supposed to be fradulent in this case

Thank you for the link, JonF.More information on Darwin's manipulation of photographs of human/ape facial expressions should be in J. Bergman: Charles Darwin’s Faulty ScholarshipA Review , but I don't have an access to the full text. As far as I know, this "fraud" was based on the simple act of photograph retouching, not on actual distortion of information presented by the pictures (if the latter was the case, it would have been trumpeted by creationists all around, I guess).