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Re: Plateosaurus skull redescribed (free pdf)



From: Ben Creisler
bscreisler@yahoo.com

The paper can now be downloaded for free at:
http://digitallibrary.amnh.org/dspace/handle/2246/6138
 
===============
Albert Prieto-Márquez and Mark A. Norell (2011)
Redescription of a Nearly Complete Skull of Plateosaurus (Dinosauria:
Sauropodomorpha) from the Late Triassic of Trossingen (Germany).
American Museum Novitates Number 3727 :1-58. 2011 
doi: http://dx.doi.org/10.1206/3727.2 
http://www.bioone.org/doi/abs/10.1206/3727.2
 
The nearly complete, disarticulated skull of AMNH FARB 6810, a specimen of
the basal sauropodomorph Plateosaurus collected in 1925 from the Norian
(Late Triassic) strata of the Knollenmergel beds of Trossingen (Germany),
is redescribed. This study supports referral of AMNH FARB 6810 to P.
erlenbergiensis on the basis of the following characters: occipital condyle
above level of parasphenoid; basisphenoid with transverse, subvertical
lamina extending between basipterygoid processes, with ventrally projecting
median process; and peglike process projecting medially from the middle of
the palatine. Furthermore, P. longiceps is regarded a junior synonym of P.
erlenbergiensis because the type specimen of the latter is diagnostic
(displaying the above-noted apomorphies of the braincase and palatine) and,
chronologically, P. erlenbergiensis has priority over P. longiceps.