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Re: cause of Gigantism in sauropods





On Wed, 9 Feb 2011, Don Ohmes wrote:

The notion that the measurement of average prey/predator size ratio in
today's world delineates as a matter of scientific principle a null
hypothesis about the behavioral interaction between giant sauropods and
giant theropods is just that -- a notion, otherwise known as an opinion.
[...]
Alligators are tactically capable of eating people, but statistically
rarely do -- taking that data to form a null hypothesis about the
behavior of the similarly capable Nile Crocodile, or even individual
alligators, is unlikely to prove useful.

In this particular case, humans are aware of the dangers and may simply
take measures (like being watchful) to stay out of danger. That is
probably effective because of the localized nature of the threat, i.e.,
waterside. Other predators, tho, like lions or whatever, have wider
ranges.

The data, both extant and fossil, tell us that -- 1) giant theropod jaws
could encompass the necks of even very large sauropods, 2) bite force
was such that one full-on bite to any portion of the neck and head was
likely to be mortal, 3) the mobility of the giant theropods on hard,
flat ground was (barring anomalous and unexpected giant sauropod
locomotive capability) overwhelmingly superior, and 4) the likely
relative nutritional requirements of the respective morphologies meant
that time was very much on the theropod's side in any protracted engagement.

How many sauropod neck specimens show bite marks?

[...]