|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Hadrosauridae
It was considered a nomen nudum by Hatcher et al. (1907); it was considered a nomen dubium by Lull and Wright (1942); it was considered a nomen dubium by Coombs and Galton (1988) and Dodson and Currie (1990).
It was assigned to Dinosauria by Cope (1876) and Cope (1876); to Orthopoda by Cope (1877); to Orthopoda by Cope (1877); to Trachodontidae by Hay (1902); to Reptilia by Huene (1909); and to Hadrosauridae by Cope (1883), Zittel (1890), Romer (1956), Tatarinov (1964), Kuhn (1964), Romer (1966) and Thulborn (1974).
Is something missing? Join the Paleobiology Database and enter the data
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.