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| Contents: | A B C D E F G H I J K L M N O P Q R S T U V W X Y Z – See also |
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- Aachenosaurus – actually a piece of petrified wood
- Aardonyx
- "Abdallahsaurus" – nomen nudum, probably Brachiosaurus or Giraffatitan
- Abelisaurus
- Abrictosaurus
- Abrosaurus
- Abydosaurus
- Acanthopholis
- Achelousaurus
- Achillesaurus
- Achillobator
- "Acracanthus" – original invalid name of Acrocanthosaurus
- Acristavus
- Acrocanthosaurus
- Actiosaurus – probably an ichthyosaur
- Adamantisaurus
- Adasaurus
- Adeopapposaurus
- Aegyptosaurus
- Aeolosaurus
- Aepisaurus
- Aerosteon
- Aetonyx – possible junior synonym of Massospondylus
- Afrovenator
- Agathaumas
- Aggiosaurus – actually a metriorhynchid crocodilian
- Agilisaurus
- Agnosphitys
- Agrosaurus – probably a junior synonym of Thecodontosaurus
- Agujaceratops
- Agustinia
- Ahshislepelta
- "Airakoraptor" – nomen nudum
- Ajkaceratops
- Alamosaurus
- "Alashansaurus" – nomen nudum; Shaochilong
- Alaskacephale
- Albalophosaurus
- Albertaceratops
- Albertonykus
- Albertosaurus
- Albinykus
- Albisaurus – a non-dinosaurian reptile
- Alectrosaurus
- Aletopelta
- Algoasaurus
- Alioramus
- Aliwalia – junior synonym of Eucnemesaurus
- Allosaurus
- Alnashetri
- Alocodon
- Altirhinus
- Altispinax
- Alvarezsaurus
- Alwalkeria
- Alxasaurus
- Amargasaurus
- Amargatitanis
- Amazonsaurus
- Ammosaurus
- Ampelosaurus
- Amphicoelias
- "Amphicoelicaudia" – nomen nudum; possibly Huabeisaurus
- "Amphisaurus" – preoccupied name, now known as Anchisaurus
- Amtocephale
- Amtosaurus – possibly Talarurus
- Amurosaurus
- Amygdalodon
- Anabisetia
- Anasazisaurus
- Anatosaurus – junior synonym of Edmontosaurus
- Anatotitan – junior synonym of Edmontosaurus
- Anchiceratops
- Anchiornis
- Anchisaurus
- Andesaurus
- Angaturama – probable junior synonym of Irritator
- "Angloposeidon" – nomen nudum
- Angolatitan
- Angulomastacator
- Aniksosaurus
- Animantarx
- Ankistrodon – actually a proterosuchid archosauriform
- Ankylosaurus
- Anodontosaurus – junior synonym of Euoplocephalus or Dyoplosaurus
- Anoplosaurus
- Anserimimus
- Antarctopelta
- Antarctosaurus
- Antetonitrus
- Anthodon – actually a pareiasaur
- Antrodemus – possibly a junior synonym of Allosaurus
- Apatodon – possibly a junior synonym of Allosaurus
- Apatosaurus – popularly known as Brontosaurus
- Appalachiosaurus
- Aragosaurus
- Aralosaurus
- "Araucanoraptor" – nomen nudum; Neuquenraptor
- Archaeoceratops
- Archaeodontosaurus
- Archaeopteryx – actually a bird
- "Archaeoraptor" – now known as the bird Yanornis and the dromaeosaur Microraptor
- Archaeornis – junior synonym of the bird Archaeopteryx
- Archaeornithoides
- Archaeornithomimus
- Archaeovolans – junior synonym of the bird Yanornis
- Arctosaurus – actually some sort of non-dinosaurian reptile
- Arcusaurus
- Arenysaurus
- Argentinosaurus
- Argyrosaurus
- Aristosaurus – junior synonym of Massospondylus
- Aristosuchus
- Arizonasaurus – actually a rauisuchian
- "Arkanosaurus" – variant spelling of "Arkansaurus"
- "Arkansaurus" – nomen nudum
- Arkharavia
- Arrhinoceratops
- Arstanosaurus
- Asiaceratops
- Asiamericana
- Asiatosaurus
- Astrodon
- Astrodonius – junior synonym of Astrodon
- Astrodontaurus – junior synonym of Astrodon
- Astrophocaudia
- Asylosaurus
- Atacamatitan
- Atlantosaurus – possible junior synonym of Apatosaurus or Camarasaurus
- Atlasaurus
- Atlascopcosaurus
- Atrociraptor
- Atsinganosaurus
- Aublysodon
- Aucasaurus
- "Augustia" – preoccupied name, now known as Agustinia
- Auroraceratops
- Australodocus
- Australovenator
- Austrocheirus
- Austroraptor
- Austrosaurus
- Avaceratops
- "Avalonia" – preoccupied name, now known as Avalonianus
- Avalonianus – actually a non-dinosaurian archosaur
- Aviatyrannis
- Avimimus
- Avipes – probably a non-dinosaurian dinosauromorph
- Avisaurus – actually an enantiornithine bird
- Azendohsaurus – a non-dinosaurian archosauromorph
Read more about this topic: List Of Dinosaurs