Hi All -
Pardons if this duplicates anything already posted today (I only see the archives a day late):
Buffetaut, E. 2005. A new sauropod dinosaur with prosauropod-like teeth from the Middle Jurassic of Madagascar. Bulletin de la Société Geologique de France 176(5):467-473.
ABSTRACT: A dentary bone containing several teeth, from the Middle Jurassic (Bathonian) of northwestern Madagascar is described as the type of a new sauropod dinosaur taxon, _Archaeodontosaurus descouensi_, n.g., n.sp. This taxon is characterised by the unusual combination of a dentary with a deep anterior part, as in advanced sauropods, and teeth with large serrations and a convex lingual side, which resemble the teeth of prosauropods. A more common pattern in early sauropods is the combination of a low, prosauropod-like dentary and spoon-shaped, sauropod-like teeth. Although the condition in _Archaeodontosaurus descouensi_ strongly suggests that basal sauropods had prosauropod-like teeth, what is known of the jaw and dentition in various early and middle Jurassic sauropods indicates mosaic evolution along different paths during the early diversification of the group. _Archaeodontosaurus descouensi_ differs from Jurassic sauropod material from Madagascar, previously described as _Bothriospondylus_ and _Lapparentosaurus_, which needs revision. It appears that at least two distinct sauropods, with different tooth morphologies, are present in the Middle Jurassic of Madagascar.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Jerry D. Harris Director of Paleontology Dixie State College Science Building 225 South 700 East St. George, UT 84770 USA Phone: (435) 652-7758 Fax: (435) 656-4022 E-mail: jharris@dixie.edu and dinogami@gmail.com http://cactus.dixie.edu/jharris/
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