Druckenmiller, P. S. Russell, A. P. 2008 A phylogeny of Plesiosauria (Sauropterygia) and its bearing on the systematic status of <em>Leptocleidus</em> Andrews, 1922 Zootaxa 1863 1-120 Simosaurus_gaillardoti Augustasaurus_hagdorni BMNH_49202 BMNH_R_dot_1336 Callawayasaurus_colombiensis_H Callawayasaurus_colombiensis_R Callawayasaurus_colombiensis_comp Cryptoclidus_eurymerus Cymatosaurus Dolichorhynchops_osborni Edgarosaurus_muddi Elasmosaurus_platyurus Hydrotherosaurus_alexandrae Kronosaurus_queenslandicus Leptocleidus_capensis Leptocleidus_superstes Libonectes_morgani Liopleurodon_ferox Macroplata_tenuiceps Muraenosaurus_leedsii Peloneustes_philarchus Plesiopterys_wildi Plesiosaurus_dolichodeirus Pliosaurus_brachyspondylus Polycotylus_latipinnis QM_F18041 Rhomaleosaurus_megacephalus Rhomaleosaurus_victor Simolestes_vorax Terminonatator_pontiexensis Thalassiodracon_hawkinsi TMP_94_dot_122_dot_01 Umoonasaurus_demoscyllus Osteology Maximum Parsimony Based on reanalysis of the original matrix. Druckenmiller_et_Russell_2008a