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RE: Greg Paul is right (again); or "Archie's not a birdy"
"It turns out"? My understanding, apart from the potential of certain fossils
from the Jurassic of the Morrison and southern China, is that the Daohugou
fauna continues to be considered Late Jurassic, and likely Kimmeridgian. If so,
there is a gap here in understanding between us, and nothing firm has been
published otherwise. Note that at least the implication of a sister-taxon
relationship between oviraptorosaurs and therizinosauroids (not always firmly
supported) with the association of *Eshanosaurus deguchiianus* implies the
clade split in the Middle Jurassic _at least_. The presence of deinonychosaurs
in the Late Jurassic (you know, *Archaeopteryx lithographica*) enforces the
premise that this short-tailed ancestor issue would have been there, as the
oviraptorosaurs would have to split off before the bird+deinonychosaur split.
My previous note already implies that short tails appears to be the norm in
oviraptorosaurs (regardless of their relationship with therizinosauroids, but
with *Falcarius utahensis* it _would_ imply missing oviraptorosaurs with very
high vertebral counts).
Jaime A. Headden
The Bite Stuff (site v2)
"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)
"Ever since man first left his cave and met a stranger with a
different language and a new way of looking at things, the human race
has had a dream: to kill him, so we don't have to learn his language or
his new way of looking at things." --- Zapp Brannigan (Beast With a Billion
> Date: Thu, 28 Jul 2011 20:28:45 -0400
> From: GSP1954@aol.com
> To: email@example.com
> Subject: Re: Greg Paul is right (again); or "Archie's not a birdy"
> In a message dated 7/28/11 6:33:35 PM, firstname.lastname@example.org writes:
> << And no abbreviated tails until the Cretaceous
> > unless new LJ fossils show otherwise.
> What about *Epidexipteryx*? >>
> It looks like Epi is turning out to be as earlier suspected E Cret.