Why this recovery surprised researchers

35:34to 66 million years ago, right? This is pretty insane. It's ridiculously flat fast, okay? I mean ridiculously fast. >> It is. And that's literally what um the Chris Lowry, who's the study's lead author from the University of Texas, he said, "It's ridiculously fast." Is what he said. Um so earlier they had done work where they had gotten samples from the Chicxulub crater around the Chicxulub crater. And you can figure out where the fossils are in the fossil record. And then you've got some kind of model for how fast sediment gets deposited. >> Right. And so from that you can figure out how old stuff is, right? Because the deeper you go, the older it is. And if you have some rate of how much sediment

36:16goes through, you can calculate you can back calculate from where the boundary is you can there's a there's a layer of sediment from the meteorite all over the Earth. Mhm. When the meteorite splashed and like created that sediment in the atmosphere, so if that's our, you know, zero, 66 million years ago, from there we can then figure out how fast fossils were coming up. That's actually a good point in that because that impact surrounded the atmosphere in the planet with the ejecta from that impact, it's a it's a bookmark >> Yeah. in the sedimentary layers of of it's a time bookmark. >> Yes. Um which that's actually interesting.