[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: The absurdity , the absurdity (was:cooperating theropods?)
Chris Campbell wrote:
> If shark studies indicate they might be as bright as
> some birds (and they do) and bird studies indicate they might be as
> bright as some mammals (presumably not the same birds being used, > here;
> lots of variety in aves), they the correlation becomes quite suspect.
> How does one respond to an African Grey Parrot who's a bright as a > chimp
> and has a brain the size of a grape (maybe plum?). That correlation
> works within a given group, not between them. Even within a group > it's
> suspect; see dolphins. The brain can be constructed in various ways,
> and that impacts how intelligent a species may be.
Yeah, female _Homo Sapiens_ usually has a smaller brain than a male of
that species but they´re often considered to be more intelligent... :)
Larry Dunn wrote:
> My analysis includes
> all extant vertebrate predators. This is precisely why I suspect that
> dromaeosaurs were not pack hunters -- because most extant vertebrate
> predators are not.
But what if Deinonychus was one of those rare cases? Or was pack hunting
`invented´ by mammals?
> Note that there is no consensus
> on the use of the digit II claw -- some think it wasn't used for
> predatory purposes at all.
But again, what is the most likely purpose to have such a claw?