We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleRespiratory evolution facilitated the origin of pterosaur flight and aerial gigantism.AuthorsClaessens LP; O'Connor PM; Unwin DMPublicationPloS one, 2009, Vol 4, Issue 2, pe4497ISSN1932-6203Publication typearticleDOI10.1371/journal.pone.0004497