Daanosaurus Efraasia Dacentrurus Einiosaurus "Dachongosaurus" – nomen nudum Ekrixinatosaurus Daemonosaurus Elachistosuchus – a rhynchocephalian Dahalokely Elaltitan Dakosaurus – a metriorhynchid crocodilian Elaphrosaurus Dakotadon Elmisaurus Dakotaraptor Elopteryx - nomen dubium Daliansaurus Elosaurus – junior synonym of Brontosaurus "Damalasaurus" – nomen nudum Elrhazosaurus Dandakosaurus - nomen dubium "Elvisaurus" – nomen nudum; Cryolophosaurus Danubiosaurus – junior synonym of Struthiosaurus Emausaurus "Daptosaurus" – nomen nudum; early manuscript name for Deinonychus Embasaurus - theropoda incertae sedis Darwinsaurus - possible junior synonym of Huxleysaurus Enigmosaurus Dashanpusaurus Eoabelisaurus Daspletosaurus Eobrontosaurus – junior synonym of Brontosaurus Dasygnathoides – a non-dinosaurian archosaur, junior synonym Eocarcharia of Ornithosuchus Eoceratops – junior synonym of Chasmosaurus "Dasygnathus" – preoccupied name, now known as Dasygnathoides Eocursor Datanglong Eodromaeus Datonglong "Eohadrosaurus" – nomen nudum; Eolambia Datousaurus Eolambia Daurosaurus – synonym of Kulindadromeus Eomamenchisaurus Daxiatitan Eoplophysis - Dinosauria indet. Deinocheirus Eoraptor Deinodon – possibly Gorgosaurus Eosinopteryx - Avialae Deinonychus Eotrachodon Delapparentia - probable junior synonym of Iguanodon Eotriceratops Deltadromeus Eotyrannus Demandasaurus Eousdryosaurus Denversaurus Epachthosaurus Deuterosaurus – a therapsid Epanterias – may be Allosaurus Diabloceratops "Ephoenosaurus" – nomen nudum; Machimosaurus (a crocodilian) Diamantinasaurus Epicampodon – a proterosuchid archosauriform Dianchungosaurus – a crocodilian Epichirostenotes "Diceratops" – preoccupied name, now known as Nedoceratops Epidendrosaurus – synonym of Scansoriopteryx Diceratus – junior synonym of Nedoceratops Epidexipteryx Diclonius - nomen dubium Equijubus Dicraeosaurus Erectopus Didanodon – possibly a junior synonym of Lambeosaurus Erketu Dilong Erliansaurus Dilophosaurus Erlikosaurus Dimodosaurus – junior synonym of Plateosaurus Eshanosaurus Dinheirosaurus – probable junior synonym of Supersaurus "Euacanthus" – nomen nudum; junior synonym of Polacanthus Dinodocus - nomen dubium Eucamerotus "Dinosaurus" – preoccupied name; now a junior synonym of Plateosaurus Eucentrosaurus – junior synonym (unneeded replacement name) Dinotyrannus – junior synonym of Tyrannosaurus of Centrosaurus Diplodocus Eucercosaurus - a dubious ornithopod Diplotomodon - nomen dubium Eucnemesaurus Diracodon – junior synonym of Stegosaurus Eucoelophysis – a silesaurid Dolichosuchus - nomen dubium "Eugongbusaurus" – nomen nudum Dollodon – junior synonym of Mantellisaurus Euhelopus "Domeykosaurus" – nomen nudum Euoplocephalus Dongbeititan Eupodosaurus – a nothosaur synonymous with Lariosaurus Dongyangopelta "Eureodon" – nomen nudum; Tenontosaurus Dongyangosaurus Eurolimnornis – a pterosaur Doratodon – a crocodilian Euronychodon - dobious troodontidae Doryphorosaurus – junior synonym of Kentrosaurus Europasaurus Draconyx Europatitan Dracopelta Europelta Dracoraptor Euskelosaurus - nomen dubium Dracorex – possibly a juvenile Pachycephalosaurus Eustreptospondylus Drinker Dromaeosauroides - dubious dromaeosauridae Fabrosaurus – possibly Lesothosaurus Dromaeosaurus Falcarius Dromiceiomimus – junior synonym of Ornithomimus Fendusaurus - possibly invalid taxonomic name Dromicosaurus – junior synonym of Massospondylus "Fenestrosaurus" – nomen nudum; Oviraptor Drusilasaura Ferganasaurus Dryosaurus Ferganastegos - dubious stegosauridae Dryptosauroides - nomen dubium Ferganocephale - dubious neornithischia Dryptosaurus Foraminacephale Dubreuillosaurus Fosterovenator - dubious ceratosauridae Duriatitan Frenguellisaurus – junior synonym of Herrerasaurus Duriavenator Fruitadens Dynamosaurus – junior synonym of Tyrannosaurus Fukuiraptor Dyoplosaurus Fukuisaurus Dysalotosaurus Fukuititan Dysganus - nomen dubium Fukuivenator Dyslocosaurus Fulengia - nomen dubium Dystrophaeus - dubious diplodocidae Fulgurotherium - nomen dubium Dystylosaurus – junior synonym of Supersaurus "Fusinasus" – nomen nudum; Eotyrannus Fusuisaurus Echinodon "Futabasaurus" – nomen nudum; not the plesiosaur Futabasaurus Edmarka – junior synonym of Torvosaurus Futalognkosaurus Edmontonia Edmontosaurus .