Saurolophinae is a subfamily of hadrosaurid dinosaurs. It has since the mid-20th century generally been called the Hadrosaurinae, a group of largely non-crested hadrosaurs related to the crested sub-family Lambeosaurinae. However, the name Hadrosaurinae is based on the genus Hadrosaurus which was found in more recent studies to be more primitive than either lambeosaurines or other traditional "hadrosaurines", like Edmontosaurus and Saurolophus. As a result of this, the name Hadrosaurinae was dropped or restricted to Hadrosaurus alone, and the subfamily comprising the traditional "hadrosaurines" was renamed the Saurolophinae.[1] Recent phylogenetic work by Hai Xing indicates that Hadrosaurus is placed within the monophyletic group containing all non-lambeosaurine hadrosaurids.[2] Under this view, the traditional Hadrosaurinae is resurrected, with the Hadrosauridae being divided into two clades: Hadrosaurinae and Lambeosaurinae.
Saurolophinae was first defined as a clade in a 2010 phylogenetic analysis by Prieto-Márquez.[3] Traditionally, the "crestless" branch of the family Hadrosauridae had been named Hadrosaurinae. However, the use of the term Hadrosaurinae was questioned in a comprehensive study of hadrosaurid relationships by Albert Prieto-Márquez in 2010. Prieto-Márquez noted that, though the name Hadrosaurinae had been used for the clade of mostly crestless hadrosaurids by nearly all previous studies, its type species, Hadrosaurus foulkii, has almost always been excluded from the clade that bears its name, in violation of the rules for naming animals set out by the ICZN. Prieto-Márquez (2010) defined Hadrosaurinae as only the lineage containing H. foulkii, and used the name Saurolophinae instead for the traditional grouping.[3]
The cladogram below follows Godefroit et al. (2012) analysis.[4]
Bactrosaurus
Hadrosauridae
Hadrosaurinae
Hadrosaurus
Lophorhothon
Saurolophidae
Lambeosaurinae
Saurolophinae
Wulagasaurus
Brachylophosaurini
Acristavus
Maiasaura
Brachylophosaurus
Kritosaurus
Gryposaurus latidens
Gryposaurus notabilis
Gryposaurus monumentensis
Saurolophini
Prosaurolophus
Saurolophus angustirostris
Saurolophus osborni
Edmontosaurini
Kerberosaurus
Kundurosaurus
Edmontosaurus annectens
Edmontosaurus regalis
The following cladogram was recovered in the 2013 phylogenetic analysis by Prieto-Márquez (the relationships within Lambeosaurinae and between basal hadrosauroids aren't shown).[1]
Telmatosaurus
Lophorhothon
Hadrosauridae
Hadrosaurus
Saurolophidae
Lambeosaurinae
Saurolophinae
Brachylophosaurini
Acristavus
Maiasaura
Brachylophosaurus
Kerberosaurus
Wulagasaurus
Edmontosaurini
Shantungosaurus
Edmontosaurus annectens
Edmontosaurus regalis
PASAC-1 (Unnamed Sabinas species)
Saurolophini
Prosaurolophus
Saurolophus morrisi
Saurolophus osborni
Saurolophus angustirostris
Kritosaurini
Naashoibitosaurus
Kritosaurus horneri
Kritosaurus navajovius
Gryposaurus latidens
Gryposaurus notabilis
Gryposaurus monumentensis
Aquilarhinus
Secernosaurus
Willinakaqe
In a 2023 study, Alarcón-Muñoz et al. implemented an updated version of the phylogenetic matrix of Rozadilla et al. (2022) to analyze the relationships of saurolophines and hadrosaurids. They proposed the name Austrokritosauria for the clade of entirely South American saurolophines closely related to kritosaurins. The results of their phylogenetic analyses of Saurolophinae are displayed in the cladogram below.[5]
Saurolophinae
Wulagasaurus
Acristavus
Maiasaura
Probrachylophosaurus
Brachylophosaurus
Austrokritosauria
Secernosaurus
Bonapartesaurus
Kelumapusaura
Huallasaurus
Kritosaurini
Kritosaurus
Rhinorex
Gryposaurus latidens
Gryposaurus notabilis
Gryposaurus monumentensis
Kamuysaurus
Prosaurolophus
Saurolophus osborni
Saurolophus angustirostris
Laiyangosaurus
Kerberosaurus
Shantungosaurus
Edmontosaurus regalis
Edmontosaurus annectens
^ abcPrieto-Márquez, A. (2013). "Skeletal morphology of Kritosaurus navajovius (Dinosauria:Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini". Journal of Systematic Palaeontology. 12 (2): 133–175. doi:10.1080/14772019.2013.770417. S2CID 84942579.
^Xing, H.; Wang, D.; Han, F.; Sullivan, C.; Ma, Q.; He, Y.; Hone, D. W. E.; Yan, R.; Du, F.; Xu, X. (2014). "A New Basal Hadrosauroid Dinosaur (Dinosauria: Ornithopoda) with Transitional Features from the Late Cretaceous of Henan Province, China". PLOS ONE. 9 (6): e98821. doi:10.1371/journal.pone.0098821. PMC 4047018. PMID 24901454.
^ abPrieto-Márquez, A. (2010). "Global phylogeny of Hadrosauridae (Dinosauria: Ornithopoda) using parsimony and Bayesian methods". Zoological Journal of the Linnean Society. 159 (2): 435–502. doi:10.1111/j.1096-3642.2009.00617.x.
^Godefroit, P.; Bolotsky, Y. L.; Lauters, P. (2012). "A New Saurolophine Dinosaur from the Latest Cretaceous of Far Eastern Russia". PLOS ONE. 7 (5): e36849. doi:10.1371/journal.pone.0036849. PMC 3364265. PMID 22666331.
^Alarcón-Muñoz, Jhonatan; Vargas, Alexander O.; Püschel, Hans P.; Soto-Acuña, Sergio; Manríquez, Leslie; Leppe, Marcelo; Kaluza, Jonatan; Milla, Verónica; Gutstein, Carolina S.; Palma-Liberona, José; Stinnesbeck, Wolfgang; Frey, Eberhard; Pino, Juan Pablo; Bajor, Dániel; Núñez, Elaine; Ortiz, Héctor; Rubilar-Rogers, David; Cruzado-Caballero, Penélope (2023-06-16). "Relict duck-billed dinosaurs survived into the last age of the dinosaurs in subantarctic Chile". Science Advances. 9 (24). doi:10.1126/sciadv.adg2456. ISSN 2375-2548. PMC 10275600.
Saurolophinae is a subfamily of hadrosaurid dinosaurs. It has since the mid-20th century generally been called the Hadrosaurinae, a group of largely non-crested...
(Lambeosaurinae), which had hollow cranial crests or tubes; and the saurolophines (Saurolophinae), identified as hadrosaurines (Hadrosaurinae) in most pre-2010 works...
Hadrosauridae and Hadrosaurinae. The other subfamily in Hadrosauridae then was Saurolophinae, which included Stephanosaurus (= Lambeosaurus), Cheneosaurus, Corythosaurus...
put it in its own subfamily in "Trachodontidae" (=Hadrosauridae), the Saurolophinae. At the time, this also included Corythosaurus and Hypacrosaurus, the...
Alarcón-Muñoz et al. erected Austrokritosauria as a new clade within the Saurolophinae, as a sister taxon to the Kritosaurini. Their phylogenetic matrix was...
subfamily comprising the traditional "hadrosaurines" was renamed the Saurolophinae. Below is a simplified cladogram recovered by Ramírez-Velasco et al...
relatives) †Hadrosauridae ("duck-billed dinosaurs"; often with crests) †Saurolophinae (hadrosaurids with solid, small, no crests) †Brachylophosaurini (short-crested)...
(=Euhadrosauria), which contains the major subfamilies Lambeosaurinae and Saurolophinae. This, along with the recovery of several hadrosauromorph taxa at the...
the sister taxon to the hadrosaurid subfamilies Lambeosaurinae and Saurolophinae. This, along with the other Appalachian hadrosaur Hadrosaurus and possibly...
an adaptation that later arose interdependently in the subfamilies Saurolophinae and Lambeosaurinae. It is closely related to Brachylophosaurus and Maiasaura...
contained Aralosaurus, Brachylophosaurus, Hadrosaurus, Lambeosaurinae, Saurolophinae, and Kritosaurus (including Gryposaurus). It was not until 2014 that...
a member of the hadrosaurid tribe Kritosaurini within the subfamily Saurolophinae. North American animals such as Kritosaurus and Gryposaurus are also...
to the Kritosaurini. The results of their phylogenetic analyses of Saurolophinae are displayed in the cladogram below: Kelumapusaura is known from the...
Hadrosauridae). Inside Trachodontidae were the subfamilies Trachodontinae and Saurolophinae. Brown classified Hadrosaurus, Trachodon, Claosaurus, and Kritosaurus...
related to kritosaurins. The results of their phylogenetic analyses of Saurolophinae are displayed in the cladogram below: Dinosaurs portal Timeline of hadrosaur...
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