Newly named archosauromorphs
Newly named basal archosauromorphs
Name Status Authors Age Unit Location Notes AnkistrodonNomen dubium Thomas Henry Huxley Early TriassicPanchet FormationA proterosuchid.
Newly named dinosaurs
Name Novelty Status Authors Age Unit Location NotesImages Astrodon johnstoni Gen. et sp. nov. Valid Leidy Early Cretaceous (Aptian/Albian boundary) Arundel Formation An indeterminate titanosauriform. Coelosaurus Preoccupied.Joseph LeidyLate Cretaceous (early Maastrichtian)Navesink Formation An ornithomimid. Preoccupied by Owen 1854. Megadactylus PreoccupiedHitchcockEarly JurassicPortland Formation Preoccupied by Fitzinger, 1843. Later renamed Amphisaurus. Polacanthus ValidSir Richard Owen vide Anonymous.Early Cretaceous (Barremian)Wessex Formation A polacanthine ankylosaur. Tomodon Preoccupied.Joseph Leidy Maastrichtian Navesink Formation Preoccupied by Duméril 1853 Later renamed Diplotomodon.
Plesiosaurs
Newly named plesiosaurs
Name Status Authors Age Unit Location Notes Piratosaurus Nomen dubium Leidy Late Cretaceous (Santonian)A dubious plesiosaur.Plesiosaurus homalospondylusValid Sir Richard Owen Early Jurassic (Toarcian)Alum shaleA Microcleididae plesiosaur. Type species of Microcleidus Watson, 1909.Plesiosaurus rostratusValid Sir Richard Owen Early Jurassic (Hettangian-Sinemurian)Charmouth MudstoneA rhomaleosaurid plesiosaur. Type species of Archaeonectrus Novozhilov, 1964.
References