Re: Viviparous dinosaurs?

[NEIL CLARK <NCLARK@museum.gla.ac.uk>]

Skip wrote:-
> 
> In regard to the question of T. rex eggs and the vast size difference 
between 
> hatchling (dare I say "chick"?) and adult, is it possible that either 
they 
> laid larger eggs than those which have been found, or that they bore 
live 
> young instead?

I know of some _Segnosaurus_ eggs that are about 5cm width.  The 
'chick would only be about 7cm in length on hatching.  I don't know 
the full size of the adult, but I guess it would have been about 9-10m 
in length?  Supposed sauropod eggs (bun shaped) are about 17cm to 
about 40cm in diameter yet the adult can be over 20m in length (there 
is, however, no direct evidence for sauropod eggs yet as far as I 
know)!  So as far as T.rex goes, the difference is slightly less---if 
these turn out to be T.rex eggs.  I would rather believe that the 
bun-shaped eggs are from raptor/T.rex, but there is no evidence 
either way yet.


Neil Clark
Curator of Palaeontology
Hunterian Museum
University of Glasgow
email: NCLARK@museum.gla.ac.uk

Mountains are found in erogenous zones.
(Geological Howlers - ed. WDI Rolfe)