| Hadrosauridae |
| Hadrosauridae |- Protohadros ` - + - Claosaurus |- Gilmoreosaurus |- Telmatosaurus ` - Euhadrosauria |- Lambeosaurinae | ` - + ?- Bactrosaurus | ` - + - Parasaurolophini | | |?- Tsintaosaurus | | ` - + -Charonosaurus | | ` - Parasaurolophus | ` - Lambeosaurini | |?- Amurosaurus | |- Jaxartosaurus | ` - + - Lambeosaurus | ` - + - Barsboldia | |- Corythosaurus | ` - Hypacrosaurus ` - Hadrosaurinae |- Maiasaurini | |- Brachylophosaurus | ` - Maiasaura ` - + - Hadrosaurini | |?- Aralosaurus | |- Gryposaurus | ` - ?- Krytosaurus ` - + - Edmontosaurini | |- Anatotitan | |- Edmontosaurus | |- Shantungosaurus | ` - ?- Tanius ` - Saurolophini |- Prosaurolophus ` - Saurolophus |