The Burgess Shale

Again, the Science article says, "But subsequent studies, including another by Clance, have shown that men are affected in equal numbers." Presumably there is a citation somewhere that says (Clance, >1978), but I'm not going to go dig it up. I'm sure Lucas Laursen would reply to an email. I've linked to an article in Science, and haven't yet seen any links to anything that contradicts it (beyond appeals to common knowledge). I feel that's sufficient to make my point.