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RE: Neovenatoridae and Megaraptora: now it can be told!



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Dann Pigdon wrote:

<It's starting to look like the megaraptora were common predators in the Ea=
rly Cretaceous of
Australia. So far we've got:

Dinosaur Cove ulna (106 MYA) compared to Megaraptor
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2603215/pdf/rspb20080504.pdf

Strzelecki Group 'allosauroid' astragalus (115 MYA) originally compared to =
Fukuiraptor
http://www.biology.ualberta.ca/faculty/philip_currie/uploads/pdfs/2000/2000=
Fukuiraptor.pdf

 Winton Formation (latest Albian) Australovenator wintonensis (with the Str=
zeleki Group astragalus
 possible refered to Australovenator sp.) http://www.plosone.org/article/in=
fo:doi/10.1371/journal.pone.0006190>

=A0 So far=2C the delicate nature of the tibia (along with that of *Kakuru*=
) and the apparent elongated ascending process being significantly (~>150% =
) greater than the astragalar distal width across on the condyles suggest t=
hese are "higher" tetanurans=2C and probably well-nested coelurosaurs. Howe=
ver=2C given that the "MCI" of *Rapator* may apply to an allosauroid=2C it =
is possible this particular specimen could refer to another such as these A=
ustralian allosauroids. There are other possibilities=2C but these push cre=
dulity a little as well as plausibility (Holtz in _The Dinosauria=2C 2nd Ed=
._=2C Tim Williams and myself have suggested the possibility *Rapator* repr=
esents a pdI-1 phalanx of an alvarezsaurian (possibly a mononykid=2C based =
on morphology=2C but this is even more far-fetched due to biogeography reas=
ons).

=A0 Cheers=2C

Jaime A. Headden

"Innocent=2C unbiased observation is a myth." --- P.B. Medawar (1969)

"Human beings=2C who are almost unique in having the ability to learn from =
the experience of others=2C are also remarkable for their apparent disincli=
nation to do so." --- Douglas Adams (Last Chance to See)

"Ever since man first left his cave and met a stranger with a different lan=
guage and a new way of looking at things=2C the human race has had a dream:=
 to kill him=2C so we don't have to learn his language or his new way of lo=
oking at things." --- Zapp Brannigan (Beast With a Billion Backs)
                                         =20
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