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Re: The Very Very Latest Paper From 2006!!!

The deer I am familiar with have an obvious double seasonal growth whammy; 
winter growth conditions, and the coincident rut. So yeah, I would expect LAGs 
in Megaceleros too.

Elk are probably relatively far up the surface/mass ratio chart from elephants 
though. I'm just saying that if the LAGs disappear in both the largest dinos 
and the largest mammals, AND there are commonly dinos w/ well-defined LAGs that 
have significantly smaller surface/mass ratios than the largest (temperate or 
cold climate) mammals, then that is relevant to the debate about their 
respective thermo-regulatory systems. 

If some kind soul w/ access to the data could write them up and publish them, 
perhaps someday I can search under keywords "LAG, definition gradient".  }:D.


----- Original Message ----
From: evelyn sobielski <koreke77@yahoo.de>
To: dinosaur@usc.edu
Sent: Wednesday, March 7, 2007 12:42:00 PM
Subject: RE: The Very Very Latest Paper From 2006!!!

--- don ohmes <d_ohmes@yahoo.com> schrieb:

> > them in their histology. Especially in
> *Mammuthus*,
> > the presence of typical 
> > LAGs has not been established, and additional work
> > is necessary. 
> "Definitely. It would be odd to have none, given
> that
> the fossil record does not suggest these were
> migratory (OTOH,..."
> Assuming the data were available-- Wouldn't the
> absence of LAGs in large animals, especially if a
> 'definition gradient' from small to large body size
> exists, support the idea of primarily
> temperature-driven effects? And if the body size
> that LAGs disappear at is much larger in dinosaurs
> than in mammals, might that speak to
> thermoregulatory systems?

Maybe so. But I think one would find fairly pronounced
LAGs in _Megaloceros_. But I have not read this:
which is apparently about the deer thriving in an
environment (and under nutritional conditions) that
were previously unknown for this species.


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