Oldest, undeniably male fossil found in British rock group - USA Today

You can't make this stuff up. Quote:

"Details revealed include gills, eyes, limbs designed for swimming and the oldest known male organ in the fossil record. It was this last that led researchers to name the new species, Colymbosathon ecplecticos, which is Greek for 'amazing swimmer with large penis.'"

I didn't know Mick Jagger was that obscure.