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Something that will be of interest to some. Finished reading Leo
Salgado's diplodocimorph macroevolution paper the other day (ref
below): in it he suggests that _Dicraeosaurus_ is paraphyletic and that
_D. sattleri_ is closer to _Amargasaurus_ than to _D. hansemanni_
(I'm hoping there that I have the species the right way round). In fact,
_D. sattleri_ might be regarded as a second species of _Amargasaurus_
and thus become _Amargasaurus sattleri_ he says (he does not use this
combination - I'm hoping both names are the same gender).
Salgado's new reconstruction of _Amargasaurus_ is interesting: as per
Greg Paul's reconstruction, the cervical spines are independent spikes,
not part of a sail. Particularly odd is his assertion that the axis-skull
articulation means that the head would habitually have been held
pointing downward and with the muzzle pointing slightly caudally.
How the animal would have looked ahead of itself is a problem. The
phantom bump on the lower jaw is there: Greg will be pleased:)
Salgado, L. 1999. The macroevolution of the Diplodocimorpha
(Dinosauria; Sauropoda): a developmental model. _Ameghiniana_ 36:
"What would you prefer: yellow spandex?"
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