Re: [dinosaur] Dating of dinosaur age during history

[Robert Margulski <Robert@Margulski.name>]

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:

http://www.stratigraphy.org/ICSchart/ChronostratChart2018-07.pdf

How 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 < dinosaurtom2015@seznam.cz> 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