Otero, R. A. 2016 Taxonomic reassessment of <em>Hydralmosaurus</em> as <em>Styxosaurus</em>: new insights on the elasmosaurid neck evolution throughout the Cretaceous PeerJ 4 e1777 Yunguisaurus_liae Pistosaurus_postcranium Pistosaurus_skull Augustasaurus_hagdorni Bobosaurus_forojuliensis Macroplata_tenuiceps Anningasaura_lymense Stratesaurus_taylori Avalonnectes_arturi Eurycleidus_arcuatus Meyerasaurus_victor Maresaurus_coccai Borealonectes_russelli Rhomaleosaurus_megacephalus Archaeonectrus_rostratus Rhomaleosaurus_cramptoni Rhomaleosaurus_zetlandicus Rhomaleosaurus_thorntoni Thalassiodracon_hawkinsii Hauffiosaurus_longirostris Hauffiosaurus_tomistomimus Hauffiosaurus_zanoni Marmornectes_candrewi Peloneustes_philarchus Simolestes_vorax Pliosaurus_funkei Pliosaurus_BRSMG_Cc332 Pliosaurus_brachydeirus Gallardosaurus_iturraldei Liopleurodon_rossicus Pliosaurus_irgisensis Pliosaurus_andrewsi Liopleurodon_ferox Kronosaurus_MCZ_1285 Brachauchenius_eulerti Brachauchenius_lucasi Brachauchenius_MNA_V9433 QM_F51291 Attenborosaurus_conybeari Plesiosaurus_dolichodeirus Eopleiosaurus_antiquior Eretmosaurus_rugosus Westphaliasaurus_simonsensii Seelyosaurus_guilelmiimperatoris Microcleidus_tournemirensis Microcleidus_brachypterygius Microcleidus_homalospondylus Plesiopterys_wildi Cryptoclidus_eurymerus Tricleidus_seeleyi Muraenosaurus_leedsii Kimmerosaurus_langhami Pantosaurus_striatus Picrocleidus_beloclis Tatenectes_laramiensis Plesiosaurus_mansellii Colymbosaurus_trochanterius Djupedalia_engeri Spitrasaurus_spp Abyssosaurus_nataliae Umoonasaurus_demoscyllus Nichollssaura_borealis Leptocleidus_capensis Leptocleidus_superstes Cimoliasaurus_valdensis MIWG Brancasaurus_brancai GWWU_A3_B2 Speeton_Clay_plesiosaurian Wapuskanectes_betsynichollsae Futabasaurus_suzukii Callawayasaurus_colombiensis Eromangasaurus_carinognathus Libonectes_morgani Hydrotherosaurus_alexandrae Edgarosaurus_muddi Plesiopleurodon_wellesi_1 QM_F18041 Palmulasaurus_quadratus Pahasapasaurus_haasi Eopolycotylus_rankini Polycotylus_latipinnis Plesiopleurodon_wellesi_2 Richmond_pliosaur Manemergus_anguirostris Dolichorhynchops_tropicensis Trinacromerum_bentonianum Dolichorhynchops_bonneri Dolichorhynchops_osborni Georgiasaurus_penzensis Dolichorhynchops_ROM Dolichorhynchops_herschelensis Aristonectes_quiriquinensis Aristonectes_parvidens Morturneria_seymourensis Kaiwhekea_katiki Alexandronectes_zealandiensis Tuarangisaurus_keyesi CM_Zfr_115 Thalassomedon_haningtoni AMNH_5835 Styxosaurus_snowii AMNH_1495 Albertonectes_vanderveldei Elasmosaurus_platyurus Terminonatator_pointeixensis Osteology Maximum Parsimony Based on reanalysis of the original matrix. Otero_2016a