Dave Hone

You need to roam further, which means, you know, if you're a mouse and you happen to have a little bit of land and that bit doesn't get hit, you're fine.

Whereas if you're an elephant and you need all of this land and even a chunk of it goes wrong, well, that's probably maybe not enough for you to survive anymore.

So, yeah, big things suffer.

disproportionately badly from these things.

And mostly as well, we think terrestrial things generally do worse than things in water because water is a great equilibrating medium.

You know, it takes ages to heat up.

It takes ages to cool down.

Yes, if you live in

specific coastal conditions or something, maybe you can't travel that easily, but whales can go from pole to pole quite happily and plenty of other fish do too.

So if it's too hot or too cold or too nasty here, you can just swim somewhere else.

Whereas if you're an animal and you hit a desert or you hit a mountain range or you hit a river, you stop moving and you're trapped and then you die.

So dinosaurs, well, yeah, the worst possible combination.

They were mostly big, and they were mostly on land.

And, yeah, it's not really surprising they did very badly out of it.

I'd be amazed if they didn't.

I mean, there's been various reports over the decades of...

the KPG or KT extinction, the Cretaceous-Paleogene or Cretaceous-Tertiary extinction of dinosaurs surviving.

And none of them have held up.

It's usually been bioturbation.

So literally things like prairie dogs digging.