Spain gave an amnesty to literal war criminals and fascists in 1977, several of which went on to shape the current right wing parties, so the Spanish right has no moral ground to stand on anyway. Seriously just make them defend in public that an illegal referendum is worse than "disappearing" thousands of people and leaving a trail of mass graves behind.
I wouldn't call 40 millions years far older, it's basically the equivalent to a 3 months difference between two 30 year olds. If anything the amazing part is how we are able to determine this with such level of precision.