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New Epachthosaurus paper (free pdf)
From: Ben Creisler
bh480@scn.org
In case this new paper has not been mentioned yet. (Note
that the pdf is free but the paper is in Portuguese.)
Gabriel Casal & Lucio Ibiricu (2010)
Assignable material to Epachthosaurus Powell, 1990
(Sauropoda: Titanosauria), from the Bajo Barreal
Formation, Upper Cretaceous, Chubut, Argentina Gabriel
Casal & Lucio Ibiricu
REVISTA BRASILEIRA DE PALEONTOLOGIA, 13(3):247-256,
September/Dezember 2010
doi:10.4072/rbp.2010.3.08
http://www.sbpbrasil.org/revista/edicoes/13_3/ing.html
This paper describes materials recovered from levels of
the Bajo Barreal Formation (Upper Cretaceous) of Ranch
Ocho Hermanos outcrops, Patagonia, Argentina. The
materials include an anterior dorsal vertebra and pelvic
elements. The large sized dorsal vertebra is assigned to
the taxon Epachthosaurus based on the following
diagnostic characters which are autapomorphic for the
above mentioned taxon: strongly developed
intraprezygapophyseal lamina, accessory articular
processes extending ventrolaterally from the hyposphene,
and aliform processes which project laterally from the
dorsal margin of the spinodiapophyseal lamina. The
incomplete sacrum has five sacral vertebrae and a portion
of the right ilium and pubis. These materials are
included within Titanosauria and tentatively pertain to
Epachthosaurus. The study of the above mentioned
materials is important because it increases our knowledge
of the relative abundance of the taxon Epachthosaurus in
Ocho Hermanos ranch outcrops. Furthermore, we propose a
set of characters which allow the expansion of the
generic diagnosis of Epachthosaurus.