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Re: About abelisaurs
I've suggested that abelisaurs preyed largely on
juvenile sauropods, using hit and run tactics to avoid
--- Amtoine Grant <email@example.com> wrote:
> As I'm trying to figure out the likely methods of
> attack various
> lineages of theropods may have used, I find myself
> contemplating on the
> the abelisaurs. I've read that the lower jaw of at
> least Carnotaurus
> seems 'weakly' built with more slender than usual
> teeth. To me, it
> would seem that the jaws may not have been the best
> method of attack.
They were probably adaquate to dispatch juveniles
or unarmored titanosars, juvenile and adult, by means
of slash and let bleed.
> But the arms are atrophied as if attempting to make
> a two-legged snake.
> Which brings me to the feet. Noting the strange
> structure of the
> foremost caudal vertebra, perhaps this may have been
> an adaptation to
> balancing on the tail while striking with the toe
> claws. . Are toe
> claws known for abelisaurs?
> I was originally thinking that they may have been
> leapers, leaping and
> ripping at the fleshy necks of sauropods,
Titanosaurs could probably assume a tripodal stance
for long periods using their stiffened tails, partly
to reach tree foliage but also occasionally to elevate
the neck beyond the reach of a theropod.
a feat for
> which they would
> not have needed particularly strong jaws. Perhaps
> the 'wing'-shaped
> dorsal vertebrae were an adaptation for withstanding
> the stress to the
> backbone when landing from these leaps. .
Or just running?
> BTW, watching the Alpha's Egg episode of Dinosaur
> Planet, did anyone
> else notice that they had Carcharodontosaurs
> attacking the sauropods in
> South America? Last I checked, Carcharodontosaurus
> is from Africa,
> Giganotosaurus is from South America. LOL
South America had carcharodontosaurs in the last
stages of the Cretaceous. There was even a suggestion
that Abelisaurus may have been a carcharodontoaur
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