Re: Cetiosaurus question

[Justin Tweet <thescelosaurus@juno.com>]

On Wed, 16 Jan 2002 21:31:04 +0100 "Alessandro Marisa" <amaris@tin.it>
writes:
> ----- Original Message -----
> From: "Justin Tweet" <thescelosaurus@juno.com>
> To: <dinosaur@usc.edu>
> Sent: Wednesday, January 16, 2002 6:39 PM
> Subject: Re: Cetiosaurus question
>
> I don't think that Atlasaurus imelakei and Cetiosaurus mogrebiensis 
> are the same animals, infact in the description of Atlasaurus the
author 
> write: "In middle Jurassic strata in Morocco, at least three major taxa
of 
> Sauropods are present: Atlasaurus imelakei, Cetiosaurus mogrebiensis, a
giant 
> Sauropod indicated by a trackway, and the longest Sauropods femur
(2360mm)".
> Furthermore, Cetiosaurus mogrebiensis can be distinguished by 
> Atlasaurus imelakei in that the neural arch bases and pleurocentra are
situated 
> in a mid-length position on dorsal vertebrae, whereas they are more 
> anterior in position in Atlasaurus imelakei; the length of the humerus
is shorter
> relative to that of the femur (humerus/femur ratio = 0.86) whereas 
> they are equal in length in Atlasaurus imelakei; and the length of the
ulna 
> and metacarpals are longer  relative to the length of the humerus (the 
> ratios are respectively 0.77 and 0.28) than in Atlasaurus imelakei
where 
> the ratios are 0.65 and 0.24.

You're right; they're not the same thing.
What I meant was at the time that the Czerkas illustration came out,
*Atlasaurus* hadn't been named yet, and what would become its type
specimen was at that time tentatively referred to *C.
mogrebiensis*.-*Thescelosaurus*
 
> By
> ____________________________________________
> Marisa Alessandro
> "Volounteer of Museo Paleontologico Cittadino, Monfalcone"
> Via Achille Grandi n°18
> 38068 ROVERETO (TN) ITALY
> Tel:039-0464-434658 Email amaris@tin.it
> Museum Web-Page: http://www.fante.speleo.it
> ____________________________________________
> 

---------------------------------------------------------------
Justin Tweet, *Thescelosaurus*
See "Thescelosaurus!": http://personal2.stthomas.edu/jstweet/index.htm

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