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

Ben Creisler
[email protected]

A reminder that there are sites in New Mexico that have not yet been
formally published that reportedly record the end of the dinosaurs into the
early Paleocene, and don't show a drop-off in dinosaurs.


The death of dinosaurs and rise of mammals in the San Juan Basin of New
Mexico, USA
by Stephen L. Brusatte, Thomas E. Williamson, Matthew T. Heizler, Daniel J.
Peppe, Ross Secord, Adam Davis, C. Will Fenley, Andrew Flynn, Caitlin
Leslie and Sarah L. Shelley


https://urldefense.proofpoint.com/v2/url?u=https-3A__www.youtube.com_watch-3Fv-3DlVBu3ff7FL4-26feature-3Dyoutu.be-26a&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=pdljsIJcth_exB4Aq2hA1VghjTeRPSYlvZbM5dw9ElE&s=bjtL06_j3jPHAmcqVOqzw99y4-CR7DP89KVhH8V010Q&e= 

==

Also, I posted a video last week by one of the people involved in the
(controversial) Tanis site research that  shows undescribed pterosaur
embryos, Triceratops skin, and dinosaur tracks, suggesting the ecosystem
was still fine up to the impact, and evolution likely was not "stalled" for
any particular reason.

The end of the dinosaurs with Jan Smit, Dutch professor of paleontology
(video)

https://urldefense.proofpoint.com/v2/url?u=https-3A__www.youtube.com_watch-3Fv-3DDVoPwmwOMeg&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=pdljsIJcth_exB4Aq2hA1VghjTeRPSYlvZbM5dw9ElE&s=OdOamtWZlRYKkJBvdkllQ69YvhEIWefSlAbDB_62ULQ&e= 






On Wed, Dec 4, 2019 at 12:17 PM Thomas Richard Holtz <[email protected]> wrote:

> "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=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=pdljsIJcth_exB4Aq2hA1VghjTeRPSYlvZbM5dw9ElE&s=AQAtml_SsNwRcKgO7Eo9F6Np9nP3duLk3x9zqjkOrHw&e= 
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.pnas.org_content_early_2016_04_13_1521478113.abstract&d=DwMDaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=JMxjjbIZXCWilersPs1bzRx-3mUwTiQUzlyzWk7v7k4&m=5GiDV_YLHqBrZRbDC-66KwSOjfg-kH_05d2CfGkbOJw&s=XKy87RAH9LDLKNVcXp5Rz28pTiz-_WZ7uJps4MRTA4E&e=>
> "
>
> Well, maybe. There are sampling issues that might be going on:
> Chiarenza, A.A., Mannion, P.D., Lunt, D.J. *et al.* Ecological niche
> modelling does not support climatically-driven dinosaur diversity decline
> before the Cretaceous/Paleogene mass extinction. *Nat Commun* 10, 1091
> (2019) doi:10.1038/s41467-019-08997-2
>
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nature.com_articles_s41467-2D019-2D08997-2D2&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=pdljsIJcth_exB4Aq2hA1VghjTeRPSYlvZbM5dw9ElE&s=w1naISsG_g6JWC0dERWPjb6Z_f3Rxs3Y6loAKHEZEXo&e= 
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nature.com_articles_s41467-2D019-2D08997-2D2&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=JMxjjbIZXCWilersPs1bzRx-3mUwTiQUzlyzWk7v7k4&m=KGmSsdr77PivypnTe1zH2WGdaP9OEdACChESwR1p_cg&s=yB-z2x0_l4WcxLX1NY1S3wZZ6viyly55QSzuLC7bhSQ&e=>
>
>
> On Wed, Dec 4, 2019 at 2:59 PM Mailing <[email protected]>
> wrote:
>
>> 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=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=pdljsIJcth_exB4Aq2hA1VghjTeRPSYlvZbM5dw9ElE&s=AQAtml_SsNwRcKgO7Eo9F6Np9nP3duLk3x9zqjkOrHw&e= 
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.pnas.org_content_early_2016_04_13_1521478113.abstract&d=DwMDaQ&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]> <[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.
>>
>>
>
> --
>
> Thomas R. Holtz, Jr.
> Email: [email protected]         Phone: 301-405-4084
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>
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