On 9/16/2024 2:08 PM, R Kym Horsell wrote:
> citizen winston smith <sss@example.de> wrote:
>> On 9/16/2024 9:46 AM, N_Cook wrote:
>>> Jan 2022 output was 515.25
>>
>> CO2 PPM during our most fecund geologic epochs was over 3,000 PPM,
>> clownshow.
>
> Just no mammals, right?
>

Dead wrong!

https://www.britannica.com/science/Tertiary-Period/The-rise-of-mammals

The most spectacular event in Cenozoic terrestrial environments has been
the diversification and rise to dominance of the mammals. From only a
few groups of small mammals in the late Cretaceous that lived in the
undergrowth and hid from the dinosaurs, more than 20 orders of mammals
evolved rapidly and were established by the early Eocene. Although there
is some evidence that this adaptive radiation event began well before
the end of the Cretaceous, rates of speciation accelerated during the
Paleocene and Eocene epochs.

https://pubmed.ncbi.nlm.nih.gov/10963587/

We estimate CO2 concentrations of more than 2,000 p.p.m. for the late
Palaeocene and earliest Eocene periods (from about 60 to 52 Myr ago),
and find an erratic decline between 55 and 40 Myr ago that may have been
caused by reduced CO2 outgassing from ocean ridges, volcanoes and
metamorphic belts and increased carbon burial.

You need to do some homework before you pop off again, peehole stretcher.

In alt.global-warming citizen winston smith <sss@example.de> wrote:
> On 9/16/2024 2:08 PM, R Kym Horsell wrote:
>> citizen winston smith <sss@example.de> wrote:
>>> On 9/16/2024 9:46 AM, N_Cook wrote:
>>>> Jan 2022 output was 515.25
>>> CO2 PPM during our most fecund geologic epochs was over 3,000 PPM,
>>> clownshow.
>> Just no mammals, right?
> Dead wrong!
....
> We estimate CO2 concentrations of more than 2,000 p.p.m. for the late

....

2000 is not 3000 clownshow.

--
Age (mn y) atm CO2 ext rate model-est
(rel now) %genera ext rate
-10 1.17933 2.06767 1.16133
-15 1.30199 2.29323 2.00115
-27 1.46844 5.58271 3.14078
-35 1.75146 8.35734 5.07853
-47 1.92988 7.98761 6.30012
-110 2.04695 3.54135 7.10166
-94 2.19502 8.88502 8.11545
-119 2.39967 10.4165 9.51662
-150 2.63641 9.79616 11.1375
-159 2.81913 9.28572 12.3885
-162 3.04563 4.82972 13.9393*
-166 3.27991 5.91923 15.5434*
-249 3.48535 16.5902 16.9499
-253 3.64985 28.3083 18.0762*
-254 3.77971 25.5551 18.9653*

y = 6.84669*x + -6.91318
beta in 6.84669 +- 2.93244 90% CI
P(beta>0.000000) = 0.999413
r2 = 0.568059
calculated Spearman corr = 0.742857
Critical Spearman = 0.623000 2-sided at 1%; reject H0:not_related

I.e. for each 280 ppmv extinction rate goes up 6.8+-2.9 pct points.
Changes in level of atm CO2 in paleo record explains 57% of ext rate
variations.

Extinction rates:
https://en.wikipedia.org/wiki/File:Extinction_intensity.svg

Atm CO2:
Atmospheric carbon dioxide levels for the last 500 million years
Daniel H. Rothman
PNAS April 2, 2002 99 (7) 4167-4171; https://doi.org/10.1073/pnas.022055499
Fig 4.

On 9/16/2024 2:44 PM, R Kym Horsell wrote:
> In alt.global-warming citizen winston smith <sss@example.de> wrote:
>> On 9/16/2024 2:08 PM, R Kym Horsell wrote:
>>> citizen winston smith <sss@example.de> wrote:
>>>> On 9/16/2024 9:46 AM, N_Cook wrote:
>>>>> Jan 2022 output was 515.25
>>>> CO2 PPM during our most fecund geologic epochs was over 3,000 PPM,
>>>> clownshow.
>>> Just no mammals, right?
>> Dead wrong!
> ...
>> We estimate CO2 concentrations of more than 2,000 p.p.m. for the late
>
> ...
>
> 2000 is not 3000 clownshow.
AGAIN:

https://www.britannica.com/science/Tertiary-Period/The-rise-of-mammals

The most spectacular event in Cenozoic terrestrial environments has been
the diversification and rise to dominance of the mammals. From only a
few groups of small mammals in the late Cretaceous that lived in the
undergrowth and hid from the dinosaurs, more than 20 orders of mammals
evolved rapidly and were established by the early Eocene. Although there
is some evidence that this adaptive radiation event began well before
the end of the Cretaceous, rates of speciation accelerated during the
Paleocene and Eocene epochs.

https://pubmed.ncbi.nlm.nih.gov/10963587/

We estimate CO2 concentrations of more than 2,000 p.p.m. for the late
Palaeocene and earliest Eocene periods (from about 60 to 52 Myr ago),
and find an erratic decline between 55 and 40 Myr ago that may have been
caused by reduced CO2 outgassing from ocean ridges, volcanoes and
metamorphic belts and increased carbon burial.

You need to do some homework before you pop off again, peehole stretcher.

In alt.global-warming clownshow <sss@example.de> wrote:
> On 9/16/2024 2:44 PM, R Kym Horsell wrote:
>> In alt.global-warming clownshow <sss@example.de> wrote:
>>> On 9/16/2024 2:08 PM, R Kym Horsell wrote:
>>>> clownshow <sss@example.de> wrote:
>>>>> On 9/16/2024 9:46 AM, N_Cook wrote:
>>>>>> Jan 2022 output was 515.25
>>>>> CO2 PPM during our most fecund geologic epochs was over 3,000 PPM,
>>>>> clownshow.
>>>> Just no mammals, right?
>>> Dead wrong!
>> ...
>>> We estimate CO2 concentrations of more than 2,000 p.p.m. for the late
>> ...
>> 2000 is not 3000 clownshow.
> AGAIN:
....

Did they change that 2 into a 3 in the last 10 min?
Everyone knows mammals kicked off around 230 mn y ago in the late Triassic.
At CO2 then was not 10x "present" levels.

The table from Rothman shows they were high but not THAT high -- less
than 4x present levels.

I know a factor of 2 or 3 is nothing to an outsider scientist or mental
patient.

--
[Outsider science:]
"[Outsider art] could be by a mental patient, a hillbilly or a chimpanzee."
-- character Astrid Weller, "The Simpsons", 1999.

On 9/16/2024 3:38 PM, R Kym Horsell wrote:
> Did they change that

https://www.britannica.com/science/Tertiary-Period/The-rise-of-mammals

The most spectacular event in Cenozoic terrestrial environments has been
the diversification and rise to dominance of the mammals. From only a
few groups of small mammals in the late Cretaceous that lived in the
undergrowth and hid from the dinosaurs, more than 20 orders of mammals
evolved rapidly and were established by the early Eocene. Although there
is some evidence that this adaptive radiation event began well before
the end of the Cretaceous, rates of speciation accelerated during the
Paleocene and Eocene epochs.

https://pubmed.ncbi.nlm.nih.gov/10963587/

We estimate CO2 concentrations of more than 2,000 p.p.m. for the late
Palaeocene and earliest Eocene periods (from about 60 to 52 Myr ago),
and find an erratic decline between 55 and 40 Myr ago that may have been
caused by reduced CO2 outgassing from ocean ridges, volcanoes and
metamorphic belts and increased carbon burial.

You need to do some homework before you pop off again, peehole stretcher.