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Gryposaurus

Reptilia - Hadrosauridae

Synonymy list
YearName and author
1914Gryposaurus Lambe p. 145
1918Gryposaurus Lambe p. 138
1920Gryposaurus Lambe pp. 67-68
1920Gryposaurus Parks p. 9
1924Gryposaurus Lull p. 272
1936Gryposaurus Sternberg p. 654
1953Gryposaurus Sternberg p. 11
1954Gryposaurus Sternberg p. 383
1990Gryposaurus Weishampel and Horner p. 556
1992Gryposaurus Horner p. 119
1993Gryposaurus Hunt and Lucas p. 80
1994Gryposaurus Forster and Sereno p. 25A
1997Gryposaurus Forster p. 294
1998Gryposaurus Godefroit et al. p. 51
2001Gryposaurus Eberth et al. p. 58
2004Gryposaurus Godefroit et al. p. 148 fig. 6
2004Gryposaurus Horner et al. p. 440
2005Gryposaurus Ryan and Evans p. 336
2006Gryposaurus Kirkland et al. p. 311 fig. 13
2006Gryposaurus Prieto-Márques et al. p. 938
2007Gryposaurus Gates and Sampson pp. 352-353
2008Gryposaurus Godefroit et al. p. 67 fig. 18
2008Gryposaurus Longrich p. 994
2009Gryposaurus Evans et al. p. 1316
2009Gryposaurus Pereda-Suberbiola et al. p. 568 fig. 6
2010Gryposaurus Cruzado-Caballero et al. p. 1510 fig. 4
2010Gryposaurus Prieto-Marquez p. 849
2010Gryposaurus Prieto-Marquez and Salinas p. 835 fig. 20
2010Gryposaurus Prieto-Márquez p. 5 fig. 2
2010Gryposaurus Prieto-Márquez and Wagner p. 1243 fig. 3
2012Gryposaurus Prieto-Márquez p. 529 fig. 14
2012Gryposaurus Ramírez-Velasco et al. p. 380
2013Gryposaurus Campione et al. p. 66
2013Gryposaurus Prieto-Marquez
2014Gryposaurus Bell p. 575
2014Gryposaurus Farke and Herrero p. 191
2016Gryposaurus Lehman et al. p. 346
2017Gryposaurus Cruzado-Caballero and Powell p. 12 fig. 13

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
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
subfamilyHadrosaurinaeLambe 1918
tribeKritosauriniLapparent and Lavocat 1955
genusGryposaurus

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
ReferenceDiagnosis
T. A. Gates and S. D. Sampson 2007Hadrosaurine hadrosaurids possessing the following autapomorphies: dorsolateral
flare on the medial margin of the premaxillary lateral process; unexcavated nasal arch located anterior to the orbits; and sigmoidal nasofrontal suture characterized by a small median process of the nasal inserting between the midline of the frontals. Members of the genus also possess the following unique combination of characters: dorsoventrally deep skull; anterior process of nasal terminates along the dorsal margin of the external naris; ventral nasal process comprising approximately 25% of the ventral margin of the external nares; abbreviated circumnarial depression, extending posteriorly only as far as the lacrimal; jugal with large offset posteroventral flange, postorbital process at or near 90°, and narrow posterior process; and frontal contribution to the orbital rim.
A. Prieto-Marquez 2010Hadrosaurid dinosaur characterized by the following autapomorphies: nasal bearing a protuberance anterior to the orbits, which is arcuate in many but not all specimens, and that rises above the level of the frontal in adults; dorsolateral flaring on the medial margin of the posteroventral process of the premaxilla; posterodorsal margin of the circumnarial depression gently incised and located dorsal to the anterior half of the lacrimal; nasofrontal suture characterized by a small median nasal process inserting between the midline of the frontals; and massive proximodorsal corner of the paroccipital process that is the thickest among hadrosaurids, with a thickness that is greater than the maximum mediolateral width of the foramen magnum (diagnosis modified from that in Horner, 1992, and Gates and Sampson, 2007).