Dr. Emily Mitchell

And, of course, in order to ejaculate these large spermatozoa, the mostrocods have special organs.

They're called Zenka's organs, and they're used to pump these huge sperms out of the body into the female.

Well, yes.

A few years after finding the male, we found a female from the same locality in Herefordshire in the UK.

It wasn't the same species, but nevertheless, it was exciting because it had eggs.

It was brooding the young, which was 430 million year old eggs.

And that's Christmas Day every day to somebody like me.

I'm here at an international scientific meeting in Xinjiang, China, and I have just reported on another penis, the second penis from the same deposit in Herefordshire in the UK.

A completely different group of ostracods, but nevertheless, we have another male.

We have a male with a penis.

Really?

And it's a very tiny one.

It's 1.7 millimetres long.

So we have three ostracod peni in the geological record now.