Henry Gee

Well, who knows?

I mean, there have been all sorts of changes that have been done.

So back in Cambrian, there were these shellfish-like things called brachiopods, which had two shells, but they were an up and a down shell.

There were a dorsal and a ventral.

They're called lamp shells because they look like the kind of lamps that Aladdin had.

And these were the shellfish-type analog.

They had an amazing structure inside called the LOFO-4, a beautiful structure that looked like a Greek lyre, which was full of gills, and that would filter stuff away.

And their competitor were bivalves.

which also have two shells but they're shells side to side rather than top and bottom and these go back to the cambrian too but were always quite rare but it was only after the end permian extinction when almost all the brachiopods were wiped out but there are still brachiopods today and there are some that are quite successful and some are only found in the deep sea but

There are also ancient echinoderms.

The starfish and sea urchins and allies also go back to the Cambrian, where they had some really, really weird versions, which we haven't had a chance to talk about.

And some really ancient type echinoderms have been found in the depths of the deep sea.

Well, thank you.

As always, it's a great pleasure and it's a lot of fun to be here, actually in person for once.

May there be many more.

Thank you.