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Mosasaurus impar

Reptilia - Squamata - Mosasauridae

Taxonomy
Drepanodon impar was named by Leidy (1856) [also said to be 1858 and p. 224; USNM has a cast of the type]. It is not a trace fossil.

It was recombined as Mosasaurus impar by Cope (1869); it was considered a nomen dubium by Miller (1967).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1856Drepanodon impar Leidy p. 255
1869Mosasaurus impar Cope p. 261

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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
RankNameAuthor
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Lepidosauromorpha(Benton 1983)
superorderLepidosauria()
orderSquamata
Episquamata
ToxicoferaVidal and Hedges 2005
superfamilyMosasauria(Marsh 1880)
familyMosasauridae
subfamilyMosasaurinaeGervais 1853
tribePlotosaurini
genusMosasaurus
speciesimpar()

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