Re: [dinosaur] Would non-avian dinosaur survive through the whole Cenozoic?

There was a slow-down in speciation rates prior to the K-Pg, see:

Sakamoto, M.; Benton, M. J. & Venditti, C.
Dinosaurs in decline tens of millions of years before their final extinction
/Proceedings of the National Academy of Sciences, /*2016*/, 113/, 5036-5040
https://urldefense.proofpoint.com/v2/url?u=https-3A__www.pnas.org_content_early_2016_04_13_1521478113.abstract&d=DwIDaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=JMxjjbIZXCWilersPs1bzRx-3mUwTiQUzlyzWk7v7k4&m=5GiDV_YLHqBrZRbDC-66KwSOjfg-kH_05d2CfGkbOJw&s=XKy87RAH9LDLKNVcXp5Rz28pTiz-_WZ7uJps4MRTA4E&e= 

On 04/12/2019 19:16, David Marjanovic wrote:
> Gesendet: Mittwoch, 04. Dezember 2019 um 16:51 Uhr
> Von: "Poekilopleuron" <[email protected]>
>
>> in his book "Dinosaurs Rediscovered", professor Mike Benton states that even if non-avian dinosaurs survived the K-Pg event, they would probably eventually perish some 50 or 40 million years ago (due to climatic changes and/or other perturbations). This is because of their limited ability to evolve new species in the last millions of years of the Cretaceous.
> There is no such thing as an inherent "ability to evolve new species" that doesn't depend on the environment, which changes.
>
> The idea that few new species _did_ evolve in the last few million years of the Cretaceous has long been abandoned: it was based simply on the fact that the Campanian record of North America is better than the Maastrichtian record of North America.