| [Thread Prev] | [Thread Next] | [Thread Index] | [Date Prev] | [Date Next] | [Date Index] |
2 in 1: --- Michael Kishel <mike@houseofshred.net> wrote: > It would seem like a huge disadvantage to be > huge, slow, and dumb ... But if they really were huge and slow, would being un-dumb help? Actually some had pretty fast tails! > ...in a world of intelligent, fast, > and lethal killers like the theropods. At this range we have little evidence that they were intelligent. Their lifestyle didn't seem complex enough - we have no evidence that they used artifacts for example, or had suitable organs for manipulating them. Dolphins show that intelligence can be developed in a simple environment without tools, but their large brains is a piece of evidence that all dino-birds lacked. Perhaps it's worth saying now that carnivorising in a group requires no extra brainpower - you just have to avoid biting or being bitten by your own kind. Look at pirhanas, or even hag-fish (or even piranhas!). Of course, all killers, even inefficient ones, are lethal ;-) . and... --- "Dr. David Campbell" <amblema@bama.ua.edu> wrote: > ...The lack of seafloor over ca. 200 > million (except where it's squashed up with other rocks, > showing evidence of past convergence and not > just divergence) ... Oh - so there is some. > There is a continuous influx of > extraterrestrial particles, but the net mass > has not made significant changes to the > earth's size or gravitational pull since ca. 4 > billion years ago. As I thought. > E.g., why are western North American > crayfish most closely related to European crayfish > whereas eastern North American crayfish > are closest to Asian crayfish? And I thought alligators were bad! But an interesting new idea every now and then is very good practice. Cordially, John J. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Partial index: