[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Chinese Boid Watching...
Some time ago, Josh Smith gave a radiometric date of the Sihetun
deposits at 121.2 mya. The only ones who insist the deposits are 150-140
mya are the Chinese, because some of them feel that it would be best if
their fossils were _Archaeopteryx_-aged, not younger. Personally I feel
that the fossils are special without being as old or older than
From: Dinogeorge@aol.com <Dinogeorge@aol.com>
To: email@example.com <firstname.lastname@example.org>; email@example.com
Date: Sunday, June 06, 1999 7:45 PM
Subject: Re: Chinese Boid Watching...
>In a message dated 6/6/99 6:08:42 PM EST, firstname.lastname@example.org writes:
><< Is this solid enough to settle the controversy over the dating of these
> Or is there still enough uncertainty to allow some to continue to claim a
> Late Jurassic date for them? >>
>Don't think there's much if any support remaining for a Late Jurassic date
>for these faunas. These radiometric dates are >well< into Early Cretaceous,
>by around 20M years.