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Re: Earliest Neornithean?



There is Liaoningornis longidigitris Hou, 1997. that is described from the
late jurasic, Tithonian, although some workers consider the Yixian Formation
early cretaceous

Fred Ruhe


At 14:30 9-11-1999 EST, you wrote:
>T. Mike Keesey wrote:
>
>>Does anyone know which time period the earliest known neornithean hails
>>from?
>>
>
>I have _Ambiortus dementjevi_ listed as Barremian-Aptian 
>(Khurilt-Ulan-Bulak, Bajan-Khongor aimek, Mongolia; Unduruhinskaya 
>Formation).  Not sure if it qualifies as a true neornithine or even an 
>ornithurine - then again, I don't think anyone's sure.
>
>_Gansus yumenensis_ is Early Cretaceous too, but I'm not sure of the exact 
>age - nor, again, if it's a true neornithine.
>
>
>
>
>Tim
>
>
>
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