FIGURE 13 in Taxonomic utility of Early Cretaceous Australian plesiosaurian vertebrae

FIGURE 13. Normalised cervical vertebral position plotted against vertebral length index (VLI) for Australian plesiosaurians and non-Australian elasmosaurids. Data for QM F3567 and RM FR271 from Sachs (2004); Opallionectes andamookaensis from Kear (2005a); Elamosaurus platyurus, Thalassomedon haningtoni, Callawayasaurus colombiensis, and Cm Zfr 115 from O'Keefe and Hiller (2006); Vegasaurus molyi from O'Gorman el. (2015); AMNH 1495, AMNH 5835, and AMNH 2554 from Otero (2016); Aristonectes parvidens from O'Gorman (2016a); Kawanectes lafquenianus from O'Gorman (2016b); Lagenanectes richterae from Sachs et al. (2017) and Jucha squalea from Fischer et al. (2020).