RE: Dinosaur Revolution Review

[Anthony Docimo <keenir@hotmail.com>]

----------------------------------------
> Date: Tue, 13 Sep 2011 15:25:37 -0700
> From: pristichampsus@yahoo.com
> To: dinosaur@usc.edu
> Subject: Re: Dinosaur Revolution Review
 
 I thank you for the hearty reply and explanation of the statement.  Now I feel 
bad - my original reply had included a "i'm kidding" at the bottom, which I 
thought I had included when I did the copy&paste - sadly, I didn't check, I 
should have.
 
and thank you again.

>
> ----- Original Message -----
>
> > From: Anthony Docimo <keenir@hotmail.com>
> > To: augustoharo@gmail.com; ron.orenstein@rogers.com
> > Cc: mickey_mortimer111@msn.com; dinosaur@usc.edu
> > Sent: Tuesday, 13 September 2011 6:03 PM
> > Subject: RE: Dinosaur Revolution Review
> >
> >
> > two replies in one.
> >
> >
> >
> >> Date: Tue, 13 Sep 2011 07:29:22 -0400
> >> Subject: Re: Dinosaur Revolution Review
> >>
> >> Excuse my ignorance, but when was the evidence of parental care in
> > hadrosaurs (which I thought was based on evidence that the young remained 
> > in the
> > nest for some time?) refuted?
> >
> > No idea...maybe people realized it was anthromorphic to assume nonhumans 
> > care
> > for their young?
>
> +++++++++++++++++++++++++++++++++++++++++++++
>
> Geist and Jones (1996) called into question the arguments for altriciality in 
> hadrosaurs. The authors pointed out that Horner's evidence for altriciality 
> (poor epiphyseal ossification) was more likely to be a taphonomic artifact 
> than an ontogenetic status. They compared altricial and precocial birds and 
> did not find any difference in epiphyseal ossification between taxa. Rather, 
> the authors found a difference in ossification of the pelvic girdle between 
> these two neonatal types. Using this new criteria the authors went back and 
> look at _Maiasaura_ and _Orodromeus_ nestlings and found that their pelvic 
> development was more similar to precocial birds and crocodylians than to 
> altricial passerines.
>
> Carpenter covers this as well in Eggs Nests and Baby Dinosaurs.
>
> Jason
>
> Refs:
>
> Carpenter, K. 1999. Eggs Nests and Baby Dinosaurs: A Look at Dinosaur 
> Reproduction. IUP. Bloomington, IN. pps 216-219
>
> Geist, N.R., Jones, T. 1996. Juvenile Skeletal Structure and the Reproductive 
> Habits of Dinosaurs. Science. Vol.272(5262):712-714
>