in many respects Wilson (2002) is still the most up to date
sauropod analysis.
What about the following?
Jerald D. Harris: The significance of *Suuwassea emilieae* (Dinosauria:
Sauropoda) for flagellicaudatan intrarelationships and evolution, Journal of
Systematic Palaeontology 4(2), 185 -- 198 (1 June 2006)
30 taxa, 331 characters. *Losillasaurus* is apparently very close to
*Mamenchisaurus* and not a neosauropod. I haven't checked if the
supplementary information is accessible (the journal itself being
prohibitively expensive).