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Re: sauropod breeding

So, We probably have a situation where juveniles could
survive without having to resort to adults carrying them
around, lifting them into trees, or little tiny fangs.

My questions are:
What would the intermediate young adult look like?
It couldn't hide, but could it's relatively small size allow
it to defend itself more easily (rearing on it's hind legs
and ramming)?

Would it eventually link up with other sauropods for
If so, would non-blood relatives be willing to take it in
(are new genes worth adopting non-relatives)?
Would this lead to different group compositions (ie.
non-affiliated males "rutting groups" as separate from
female herds?)

Would the need for relatives to pass through a local area to
pick up the juveniles of a few years ago effect migration
patterns and how would relatively regional populations
effect a predators ability to track that population (I am
thinking mara masai here).
Is this consistent with the highly mobile Carnosaur

Is there any way to test these possibilities?

-Jonas Weselake-George
Ottawa Paleontological Society

----- Original Message -----
From: David Marjanovic <david.marjanovic@gmx.at>
To: DML <dinosaur@usc.edu>
Sent: Sunday, March 12, 2006 5:54 PM
Subject: Re: sauropod breeding

> Well, you can probably assume highly cryptic colouring and
a deeply
> skittish nature,

A skittish nature at the same time as an inability to run?
Is that of much
use? :-/

> but consider sea turtles --

Yes, but they are armored and can swim at reasonable speeds.

> Also note that the whip-tail sauropods and mace-tail
sauropods probably
> have these defensive measures from a small size, and that
they'd apply
> to equivalently sized predators just fine.  So
Ornithosteles is fine
> with the hatchlings, and maybe even the yearlings, but has
some serious
> cost-benefit concerns thereafter.

Imaginable, but that's where, say, juvenile carnosaurs may