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Re: Screaming dromaeosaur biplane killers of the air
Just wanted to comment on a couple things....
Jaime Headden wrote, in reference to the lateral flange on manual digit
> This is also absent in many
> other basal birds, such as *Cathayornis*, though the type specimen of
> *Sinornis* has what appears to be a broader first than second phalanx of
> the second digit.
Wrong, wrong, wrong. :-)
Sinornis is the same as Cathayornis yandica (Sereno et al., 2002), and shows
and extensive flange on this phalanx. There is even a smaller flange on
phalanx II-2. Refer to figure 8.3 in Sereno et al..
> The earliest true alula known occurs in *Eoalulavis*
> from the LJ Las Hoyas of Spain.
Early Cretaceous (Barremian), not Late Jurassic. Eoenantiornis is also
Barremian, and preserves an alula.