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Re: Chinese Boid Watching...

At 05:19 PM 6/6/99 -0400, Dinogeorge@aol.com wrote:
>
>Radiometric dates are given for four separate Liaoning assemblages....
>
>[1] Confuciusornnis-Sinosauropteryx-Zhangheotherium Assemblage
>Jianshangou bed of lower Yixian Formation, Sihetun; dated 125.42+-0.08Ma and 
>125.52+-0.07Ma (two different tuff samples), middle Barremian, Early 
>Cretaceous

Is this solid enough to settle the controversy over the dating of these faunas?

Or is there still enough uncertainty to allow some to continue to claim a
Late Jurassic date for them?

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May the peace of God be with you.         sarima@ix.netcom.com