NEW RHYNCHOSAUR & TEMNOSPONDYLS

[Mickey Rowe <rowe@psych.ucsb.edu>]

I'm not sure why, but the listprocessor didn't like Darren's message.
Hence I submit it on his behalf (for some reason it trusts me).  
-- MPR

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From: darren.naish@port.ac.uk
To: dinosaur@usc.edu
Date: Wed, 18 Oct 2000 14:04:42 +0100
Subject: NEW RHYNCHOSAUR & TEMNOSPONDYLS

Sigh, another new journal with new Mesozoic vert palaeo papers. New 
issue of _Palaeontology_ is just in. Contains the following....

Langer, M.C. and Schultz, C.L. 2000. A new species of the Late 
Triassic rhynchosaur _Hyperodapedon_ from the Santa Maria 
Formation of south Brazil. _Palaeontology_ 43: 633-652.

The new species, _H. huenei_, is the fifth rhynchosaur from the Santa 
Maria Fm and the fifth of the genus. It's primitive compared to the 
others (_H. mariensis_, _H. huxleyi_, _H. gordoni_ and _H. 
sanjuanensis_). To preserve Chatterjee's 1969 morphological 
definition of the Hyperodapedontinae, Langer and Schultz propose a 
stem-based definition of the clade that encompasses all rhynchosaurs 
closer to _H._ than to _'Rhynchosaurus' spenceri_. This latter species 
needs a new genus as it doesn't appear close to _R. articeps_.

Shishkin, M.A. and Rubridge, B.S. 2000. A relict rhinesuchid 
(Amphibia: Temnospondyli) from the Lower Trassic of South Africa. 
_Palaeontology_ 43: 653-670.

_'Lydekkerina' putterilli_ is given its own genus, _Broomistega_, and 
regarded as a paedomorphic rhinesuchid (rather than as a lydekkerinid 
or juvenile of the rhinesuchid _Uranocentrodon_). This is interesting 
because it means that most of the _Lystrosaurus_ Zone 'amphibians' 
are now paedomorphic miniature species. Maybe this is due to the 
small size and shallowness of the water bodies, the authors suggest.

Schoch, R.R. 2000. The origin and intrarelationships of Triassic 
capitosaurid amphibians. _Palaeontology_ 43: 705-728.

Is it just me, or has more been published on the phylogeny of 
temnospondyls within the past year than within... well, a while. 
Monophyly of capitosaurids sensu Romer is supported - lots of 
diagrams and nice trees.

"He had a proper view of students: to be avoided wherever possible" 
(from Alick Walker's obituary)

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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