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Kritosaurini

Reptilia - Hadrosauridae

Discussion

The most exclusive clade of hadrosaurids containing Kritosaurus navajovius Brown, 1910, Gryposaurus notabilis Lambe, 1914, and Naashoibitosaurus ostromi Hunt & Lucas, 1993

Taxonomy
Kritosaurini was named by Lapparent and Lavocat (1955). It was considered monophyletic by Prieto-Marquez (2013).

It was assigned to Saurolophinae by Prieto-Marquez (2013) and Lehman et al. (2016); and to Hadrosaurinae by Cruzado-Caballero and Powell (2017).

Synonymy list
YearName and author
1955Kritosaurini Lapparent and Lavocat
2013Kritosaurini Prieto-Marquez
2016Kritosaurini Lehman et al. p. 346
2017Kritosaurini Cruzado-Caballero and Powell p. 10

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
RankNameAuthor
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Ornithopoda()
—Clypeodonta
—Iguanodontia()
—Dryomorpha
—Styracosterna
—Hadrosauriformes
—Hadrosauroidea()
familyHadrosauridae
subfamilyHadrosaurinaeLambe 1918
tribeKritosauriniLapparent and Lavocat 1955
tribeKritosauriniLapparent and Lavocat 1955

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.

Tr. †Kritosaurini Lapparent and Lavocat 1955
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G. †Coahuilasaurus Longrich et al. 2024
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†Coahuilasaurus lipani Longrich et al. 2024
G. †Gryposaurus Lambe 1914
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†Gryposaurus alsatei Lehman et al. 2016
†Gryposaurus latidens Horner 1992
†Gryposaurus monumentensis Gates and Sampson 2007
†Gryposaurus notabilis Lambe 1914
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Invalid names: Gryposaurus incurvimanus Parks 1919 [synonym]
G. †Huallasaurus Rozadilla et al. 2021
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†Huallasaurus australis Bonaparte et al. 1984
G. †Kelumapusaura Rozadilla et al. 2021
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†Kelumapusaura machi Rozadilla et al. 2021
G. †Kritosaurus Brown 1910
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†Kritosaurus horneri Hunt and Lucas 1993 [Anasazi lizard]
†Kritosaurus navajovius Brown 1910
G. †Naashoibitosaurus Hunt and Lucas 1993
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†Naashoibitosaurus ostromi Hunt and Lucas 1993
G. †Secernosaurus Brett-Surman 1979
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†Secernosaurus koerneri Brett-Surman 1979
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Maximum body mass: 3000 kgg
Minimum body mass: 1000 kgg
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: g = genus, subo = suborder, o = order
References: Marsh 1875, Peczkis 1995, Benton 1983

Age range: base of the Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma

Collections (51 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Santonian85.8 - 83.5Canada (Alberta) Kritosaurus sp. (48834 71485)
Campanian - Maastrichtian83.6 - 66.0Argentina (Chubut) Secernosaurus koerneri (58574)
Judithian83.5 - 70.6USA (Texas) Kritosaurus sp. (48941)
Late/Upper Campanian83.5 - 70.6USA (Montana) Claosaurus sp. (26767) Gryposaurus sp. (22689)
Late/Upper Campanian83.5 - 70.6USA (New Mexico) Diclonius sp. (35518) Edmontosaurus saskatchewanensis (36269) Kritosaurus navajovius (36541 46984 53980 154462 154639) Kritosaurus sp. (55882 56271 56293 56429 56646 62489 62535 150884) Kritosaurus sp., Kritosaurus navajovius (47818 47820)
Late/Upper Campanian83.5 - 70.6USA (Utah) Gryposaurus sp. (75467 97806 172613) Gryposaurus sp. A (230869)
Late/Upper Campanian83.5 - 70.6Canada (Alberta) Gryposaurus notabilis (58947) Gryposaurus sp. (59012 59013) Hadrosaurus sp. (59102) Kritosaurus notabilis (11919 55317 58946) Kritosaurus sp. (59119 96534)
Middle Campanian83.5 - 70.6Canada (Aragón) Kritosaurini indet. (229969)
Middle Campanian83.5 - 70.6USA (Montana) Gryposaurus latidens (47101) Hadrosauridae indet. (142497) Kritosaurini indet., Hadrosaurinae indet. (14437)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Montana) Kritosaurus sp. (142510)
Middle Campanian - Late/Upper Campanian83.5 - 70.6Canada (Alberta) Kritosaurus incurvimanus (46331)
Middle Campanian - Late/Upper Campanian83.5 - 70.6USA (Texas) Kritosaurus sp. (22709 189805)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Canada (Alberta) Saurolophinae indet. (163050)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0Argentina (Río Negro) Kelumapusaura machi (231728) Kritosaurus australis (45088) Kritosaurus sp. (45087)
Maastrichtian72.1 - 66.0USA (Texas) Edmontosaurus sp. (187094) Kritosaurus sp. (187093)
Late/Upper Maastrichtian70.6 - 66.0USA (Texas) Gryposaurus alsatei (187092)