Dave Hone

Where did they live?

So the ones we found, you've got them from Alberta down to probably New Mexico.

There's some, I want to say there's some Tyrannosaurine, so very close to T-Rex teeth that may or may not be T-Rex in New Mexico.

There's similar teeth in Mexico proper down in Coahuila.

So about halfway down Mexico.

Mongolia also?

So Mongolia, you have a thing called Tarbosaurus, which is a very, very close relative of T-Rex.

It's the nearest species or nearest genus that we have.

But T-Rex is probably occupying almost all of Western North America.

So at times the East was kind of split off and separate.

But the entire surface of Earth had dinosaurs on it.

Oh, yeah.

Yeah, we've got them in Antarctica.

We've got them in Antarctica, even close to the mass extinction event.

I mean, this is, this is like how many dinosaur species were there?

I mean, I basically wrote an entire book chapter about this because there's so many, but this would make the number high, but this would make the number lower, but this would make the number high, but this would make the number lower counter versus counter arguments.

that you can guesstimate almost any number and probably be very accurate or very far out yeah but we should say that a large number of dinosaur species are constantly being discovered yeah so we've named give or take in the realm of 1500 1600 valid species that is not everyone agrees on every species but most people would be satisfied with that number

But we also name in the realm of 40 to 50 a year, and we've been doing that for at least the last 10, 12 years.

That number is rocketing up.

Shows no signs of slowing down.