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Re: Alvarezsaur spurs (was Re: dino-lice)

On 4/20/2011 1:01 PM, Thomas R. Holtz, Jr. wrote:
From:owner-DINOSAUR@usc.edu  [mailto:owner-DINOSAUR@usc.edu]
>  On Behalf Of Brad McFeeters
>  Did any alvarezsaurids inhabit treeless environments?     
The Djadokhta and its equivalents were likely lacking in any substantial trees, 
and alvarezsaurids are most definitely known from

To pursue the "carcass-cave" scenario, albeit w/ diffidence: among the various formations wherein alvarezsaurids are known, is there a correlation between the size of the alvarezsaurids found and the largest herbivore found?