Today sees the publication of a new paper by Michael P. Taylor, Mathew Wedel and myself in which we make a bold and controversial claim: based on data from living animals, we contend that the necks of sauropod dinosaurs - all sauropod dinosaurs - were most likely held habitually in erect poses, and not in horizontal or sub-horizontal poses (Taylor et al. 2009). This research should of course be significant if you're interested in knowing what sauropods looked like when they were alive.