Читать книгу Hadrosaurs - David A. Eberth - Страница 39

The brief anatomical survey of these Wealden taxa provides an opportunity to align them, systematically, with other reasonably well-known taxa from younger stratigraphic stages, with the intention of exploring their phylogenetic relationships generally, as well as exploring the origin of euhadrosaurs. Numerous phylogenetic hypotheses have been proposed (e.g., Norman 2002, 2004, in press; Weishampel et al., 2003; Horner et al., 2004; Prieto-Márquez, Gaete, et al., 2006; Dalla Vecchia, 2009; McDonald et al., 2010; Prieto-Márquez, 2010; McDonald, 2012b). These analyses have either directly or indirectly addressed the relationships of those animals that are proximate to the clade most commonly referred to as Hadrosauridae (= Euhadrosauria, Weishampel et al. 1993), but have resulted in little general consensus on the relationships of individual taxa.

2.22. Iguanodon bernissartensis Boulenger. Holotype pelvis partially restored, RBINS R51. Abbreviations: ac, acetabulum; br.f, brevis fossa; obt, obturator process. Cross-sectional views shown as solid black (after Norman, 1980).