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Re: Oviraptorids as Parrots?



Dann Pigdon (dannj@alphalink.com.au) wrote:

<When you can bite through the shell of a marine turtle, there are few food
resources that are beyond you... :)>

  However, most marine turtles are of the "soft-shell" variety, without the
extensive plate-shaped bones as in land turtles. This makes getting through a
marine turtle's shell rather easier than, say, a box turtle's or a tortoise's.
Furthermore, while jaguars may make good analogies, also consider that jaguars
are adapted for killing by biting into the skulls of their prey, and thus would
necessarily be preadapted to biting through turtleshells.

  Tiger sharks, on the other hand, are much less selective in their prey and
this have driven the lack of an adaptive dietary feature of the teeth, and thus
their teeth are slender, carinate, and semi-conical, capable of slashing,
piercing, and griping without much problems. Other sharks such as blue and
great white (pointer) sharks are adapted to taking long massive chucks out at
once, and their teeth are deisgned to go for prey much larger than the gape of
their jaws. They don't try to gulp prey, like most hammerheads do, in one bite,
but by shearing chunk after chunk.

  Cheers,

Jaime A. Headden

"Innocent, unbiased observation is a myth." --- P.B. Medawar (1969)

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