[dinosaur] Fwd: Re: Dating of dinosaur age during history

---------- Původní e-mail ----------
Od: Robert Margulski <[email protected]>
Komu: Merald Clark <[email protected]>, Poekilopleuron <dinosaurtom2015@
seznam.cz>
Datum: 22. 11. 2019 2:12:49
Předmět: Re: [dinosaur] Dating of dinosaur age during history 
"
All,

I having trouble posting right now, please forward to the list if you deem
it proper.

Table of age estimates?
I would go with the IUGS chart at:

https://urldefense.proofpoint.com/v2/url?u=http-3A__www.stratigraphy.org_ICSchart_ChronostratChart2018-2D07.pdf&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=agodU_B8t7J6i7TR6fFhLIh74Z76JgqOP4AxhZmB9ZY&s=8Tff8zQesgRGTAJy6ZK5qiRlRflAmyqb4Q4sksr5F60&e= 

(https://urldefense.proofpoint.com/v2/url?u=http-3A__www.stratigraphy.org_ICSchart_ChronostratChart2018-2D07.pdf-29How&d=DwIFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=Ry_mO4IFaUmGof_Yl9MyZgecRCKHn5g4z1CYJgFW9SI&m=agodU_B8t7J6i7TR6fFhLIh74Z76JgqOP4AxhZmB9ZY&s=ecIphLDoG78R6xpRo_NZJ7axJC8GrARKRuAjrAUuvpc&e=  it has
improved over time?
I'd like to see that myself.

Respectfully,
Robert


At 11:19 AM 11/21/2019, Merald Clark wrote:

"OMG Poekilopleuron, thank you!
I've been wondering about this lately myself!
Yours,
Merald Clark

On Wed, Nov 20, 2019 at 11:26 AM Poekilopleuron < [email protected]
(mailto:[email protected])> wrote:
Good day,

I seem to recall that at the beginning of the 20th Century it was believed
that Tyrannosaurus was only about 3 to 8 million years old (and
Protoceratops about 13 million years after 1920). Is there any table of age
estimates for dinosaurs and how it was improved during the time? E. g. how K
-Pg boundary was dated from the 19th Century up to modern estimates of 66.0
mya. I have seen that around 1950 it was thought to be some 75 to 70 million
years ago? Thank you in advance! Tom
"
"Be faithful in small things,
 because it is in them that your strength lies."
     Mother Teresa

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