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Dysagnus haydenianus

Reptilia - Hadrosauridae

Taxonomy
Dysagnus haydenianus was named by Cope (1876). It is not extant. Its type specimen is AMNH 5738.

It was considered a nomen dubium by Lull and Wright (1942); it was considered a nomen dubium by Coombs and Galton (1988), Dodson and Currie (1990) and Dodson et al. (2004).

Synonymy list
YearName and author
1876Dysagnus haydenianus Cope
1877Dysagnus haydenianus Cope p. 316
1902Dysagnus haydenianus Hay p. 505
1964Dysagnus haydenianus Kuhn p. 17

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
RankNameAuthor
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Ornithischia()
Neornithischia()
Ornithopoda()
Iguanodontia()
Dryomorpha
Ankylopollexia
Styracosterna
Hadrosauriformes
Hadrosauroidea()
familyHadrosauridae
genusDysagnus
specieshaydenianus

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.

Diagnosis
No diagnoses are available