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PACHY PARADOX

To: dinosaur@usc.edu
Subject: PACHY PARADOX
From: darren.naish@port.ac.uk
Date: Fri, 30 Jun 2000 13:51:46 +0100
Reply-to: darren.naish@port.ac.uk
Sender: owner-dinosaur@usc.edu

Tom Holtz writes...

> ...the Pachy Paradox problem as stated ignores the possible presence 
> of Pachycephalosauria, in the form of _Stenopelix_ (argued to be a   
> pachycephalosaur by Sereno in his 1999 paper in Science), in the      
> Early Cretaceous.

Ahem... and _Yaverlandia_.

Lots of discussion of basal marginocephalian evolution in the Isle of 
Wight book Dave Martill and I are working on. Stay tuned. BTW, 
WRT Tom's mention of _Stenopelix_-as-pachycephalosaur (Sereno 
1997), note that Maryanska (1990) excludes it from this group.

DARREN NAISH 
PALAEOBIOLOGY RESEARCH GROUP
School of Earth, Environmental & Physical Sciences
UNIVERSITY OF PORTSMOUTH
Burnaby Building
Burnaby Road                           email: darren.naish@port.ac.uk
Portsmouth UK                          tel: 01703 446718
P01 3QL

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