[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Dinosaurs to birds



In a message dated 1/23/99 1:34:04 PM EST, sarima@ix.netcom.com writes:

<<  Larger animals seem to have
 been less likely to make it through than smaller ones, for instance.  Since
 most non-avian dinosaurs of the Maastrichtian were larger than most birds,
 this may be enough to explain the difference. >>

This, in turn, may simply be due to there being, among larger animals, fewer
individuals available from among which occasional lucky ones might have been
saved. If the probability of an individual surviving is, say, one in a
million, and the population is ten thousand, then one would expect the entire
population to be destroyed. But if the population is ten million, then one
would expect about ten individuals to survive.