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Re: New Spanish PhD on dinosaurs: Galvesaurus herreroi



Losillasaurus is the sister group to Turiasaurus+Neosauropoda in both strict consensus cladogram and semi-strict consensus cladogram in Barco's analysis.

Turiasauria is defined by Royo-Torres et al. (2006) as "a stem-based taxon including all eusauropods more closely related to T. riodevensis than to Saltasaurus loricatus"; following this definition Galvesaurus and Losillasaurus are not members of Turiasauria.

J. Ignacio Ruiz-Omeñaca

According to Dr. Barco, Galvesaurus is not a
cetiosaurid nor a turiasaur, but a basal macronarian
related with Phuwiangosaurus, Aragosaurus,
Tastavinsaurus, Cedarosauus and Venenosaurus. This 6
genera form a monophyletic group (unnamed) which is the
sister group to Titanosauriformes.


This is interesting, because it means that this 6-genus clade (which contains genera that are Cretaceous in age, or at least close to the Jurassic-Cretaceous boundary) is basal to the Late Jurassic _Brachosaurus_.

Royo-Torres et al. (2006) recovered _Galvesaurus_ (as _Galveosaurus_) in the Turiasauria clade, along with _Losillasaurus_ and _Turiasaurus_. I wonder if the _Losillasaurus_-_Turiasaurus_ clade was retained in Barco's analysis. How secure is Turiasauria?



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Jose Ignacio Ruiz-Omeñaca
Museo del Jurásico de Asturias (MUJA)
E-33328 Colunga, Spain
www.dinoastur.com
www.museojurasicoasturias.com
www.aragosaurus.com
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