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

Re: Polar sauropods




On Sun, 6 Dec 1998, Sherry Michael wrote:
Bois wrote:
> >Another consideration is the relatively small baby size the bigger the
> >parent.  Could the babies get up enough speed for the return trip.
> 
> Maybe the juvinelles were left behind in the warmer climates for a year?

But the thinking is that if dinosaur migrations were analagous to avian
migrations, that they would be travelling toward the cold.  Why do birds
do this?  Could be to take advantage of great productivity of arctic
summer or to nest in a place of lower predator density.  Presumably,
similar motives were in existence in non-avian days.