This post is a list of popular dinosaurs. There are 2 species below that are commonly regarded as dinosaurs, but are not technically dinosaurs: Elasmosaurus and Pterodactylus. This list was generated with the help of Google Search. There are 50 species listed below alphabetically.
Alioramus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY-SA 3.0
Allosaurus
Photo source: Wikimedia Commons, Fred Wierum
License: CC BY-SA 4.0
Amargasaurus
Photo source: Wikimedia Commons, Arthur Weasley
License: CC BY-SA 3.0
Anchiceratops
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY 3.0
Apatosaurus
Photo source: Wikimedia Commons, ДиБгд
Archaeopteryx
Photo source: Wikimedia Commons, Luna04
License: CC BY-SA 3.0
Argentinosaurus
Photo source: Wikimedia Commons, Zachi Evenor
License: CC BY 3.0
Baryonyx
License: CC BY-SA 3.0
Brachiosaurus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY-SA 3.0
Brontosaurus
Photo source: Wikimedia Commons, Tom Parker
License: CC BY-SA 4.0
Camarasaurus
Photo source: Wikimedia Commons, Dmitry Bogdanov
License: CC BY-SA 4.0
Carcharodontosaurus
Photo source: Wikimedia Commons, Fred Wierum
License: CC BY-SA 4.0
Carnotaurus
Photo source: Wikimedia Commons, Andrey Atuchin
License: CC BY-SA 4.0
Ceratosaurus
Photo source: Wikimedia Commons, DiBgd
License: CC BY-SA 3.0
Charonosaurus
Photo source: Wikimedia Commons, Debivort
License: CC BY-SA 3.0
Chindesaurus
Photo source: Wikimedia Commons, Jeff Martz
Coelophysis
Photo source: Wikimedia Commons, Park Ranger and Jeff Martz
License: CC BY 2.0
Deinonychus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY-SA 3.0
Dilophosaurus
Photo source: Wikimedia Commons, Arthur Weasley
License: CC BY-SA 3.0
Diplodocus
Photo source: Wikimedia Commons, Dmitry Bogdanov
License: CC BY 3.0
Dryptosaurus
Photo source: Wikimedia Commons, Josep Asensi (durbed.deviantart.com)
License: CC BY 3.0
Edmontosaurus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY-SA 3.0
Elasmosaurus (not a dinosaur)
Photo source: Wikimedia Commons, DiBgd
License: CC BY-SA 4.0
Gallimimus
Photo source: Wikimedia Commons, Steveoc 86
License: CC BY-SA 3.0
Giganotosaurus
Photo source: Wikimedia Commons, ДиБгд
Guanlong
Photo source: Wikimedia Commons, Durbed
License: CC BY-SA 3.0
Herrerasaurus
Photo source: Wikimedia Commons, Fred Wierum
License: CC BY-SA 4.0
Mamenchisaurus
Photo source: Wikimedia Commons, ДиБгд
License: CC BY-SA 3.0
Mantellisaurus
Photo source: Wikimedia Commons, Steveoc 86
License: CC BY-SA 3.0
Megalosaurus
Metriacanthosaurus
Photo source: Wikimedia Commons, FunkMonk (Michael B.H.)
License: CC BY-SA 3.0
Olorotitan
Photo source: Wikimedia Commons, ДиБгд
License: CC BY-SA 3.0
Omeisaurus
Photo source: Wikimedia Commons, Levi bernardo
License: CC BY-SA 3.0
Ornitholestes
Photo source: Wikimedia Commons, PaleoNeolithic
License: CC BY-SA 4.0
Parasaurolophus
Photo source: Wikimedia Commons, Tim Bekaert
Pinacosaurus
Photo source: Wikimedia Commons, Jack Mayer Wood
License: CC BY-SA 4.0
Pterodactylus (not a dinosaur)
Photo source: Wikimedia Commons, Matthew P. Martyniuk
License: CC BY-SA 4.0
Spinosaurus
Photo source: Wikimedia Commons, ДиБгд
License: CC BY-SA 4.0
Stegosaurus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY-SA 3.0
Struthiomimus
Photo source: Wikimedia Commons, Nobu Tamura (spinops.blogspot.com)
License: CC BY 3.0
Talarus
Photo source: Wikimedia Commons, Jack Mayer Wood
License: CC BY-SA 4.0
Tanycolagreus
Photo source: Wikimedia Commons, Smokeybjb
License: CC BY-SA 3.0
Therizinosaurus
Photo source: Wikimedia Commons, PaleoNeolithic
License: CC BY 4.0
Torvosaurus
Photo source: Wikimedia Commons, Fred Wierum
License: CC BY-SA 4.0
Triceratops
Photo source: Wikimedia Commons, Vikidia
License: CC BY-SA 3.0
Tuojiangosaurus
Photo source: Wikimedia Commons, Paleocolour
License: CC BY-SA 4.0
Tyrannosaurus Rex
Photo source: Wikimedia Commons, Durbed
License: CC BY-SA 3.0
Utahraptor
Photo source: Wikimedia Commons, Fred Wierum
License: CC BY-SA 4.0
Yutyrannus
Photo source: Wikimedia Commons, Tomopteryx
License: CC BY-SA 4.0