Classification of Wilfarth 1940

Fm. †Hadrosauridae Cope 1869 [hadrosaurid]
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Subfm. †Hadrosaurinae Lambe 1918 [hadrosaurine]
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G. †Claosaurus Marsh 1890
G. †Edmontosaurus Lambe 1917
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†Edmontosaurus regalis Lambe 1917
G. †Kritosaurus Brown 1910
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†Kritosaurus notabilis Lambe 1914
Subfm. †Lambeosaurinae Parks 1923 [lambeosaurine]
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G. †Cheneosaurus Lambe 1917
G. †Corythosaurus Brown 1914
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G. †Hypacrosaurus Brown 1913
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G. †Lambeosaurus Parks 1923
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†Lambeosaurus lambei Parks 1923
†Lambeosaurus magnicristatus Sternberg 1935
G. †Parasaurolophus Parks 1922
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G. †Tetragonosaurus Parks 1931
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†Tetragonosaurus cranibrevis Sternberg 1935
Invalid names: Stephanosaurinae Lambe 1920 [replaced]
Subfm. †Saurolophinae Brown 1914
G. †Hadrosaurus Leidy 1858
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†Hadrosaurus foulkii Leidy 1858
G. †Gorgosaurus Lambe 1914
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†Gorgosaurus libratus Lambe 1914