Saurolophinae

Saurolophines Temporal range: Late Cretaceous, 79–66 Ma PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Order:	†Ornithischia
Suborder:	†Ornithopoda
Family:	†Hadrosauridae
Clade:	†Euhadrosauria
Subfamily:	†Saurolophinae Lambe, 1918
Type species
†Saurolophus osborni Brown, 1912
Genera[1]
Barsboldia Wulagasaurus? Brachylophosaurini Acristavus Brachylophosaurus Maiasaura Probrachylophosaurus Wulagasaurus? Edmontosaurini Anatosaurus Edmontosaurus Huaxiaosaurus Kerberosaurus? Kundurosaurus? Shantungosaurus Ugrunaaluk Kritosaurini (=Gryposaurini) Anasazisaurus Gryposaurus Kritosaurus Latirhinus[2] Naashoibitosaurus Rhinorex[3] Secernosaurus Willinakaqe Saurolophini Augustynolophus[4] Prosaurolophus Saurolophus Kerberosaurus? Kundurosaurus?

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.^[5] Therefore, the traditional Hadrosaurinae should be treated as before: Hadrosauridae is divided into two clades: Hadrosaurinae and Lambeosaurinae.

Saurolophinae was first defined as a clade in a 2010 phylogenetic analysis by Prieto-Márquez.^[6] 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.^[6]

The cladogram below follows Godefroit et al. (2012) analysis.^[7]

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 UTEP 37.7 (Unnamed Big Bend species) Secernosaurus Willinakaqe

Graphical timeline of taxonomy

See also

• Timeline of hadrosaur research

References

1. Prieto-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. in press. doi:10.1080/14772019.2013.770417.
2. Prieto-Márquez, Albert; Serrano Brañas, Claudia Inés (2012). "Latirhinus uitstlani, a 'broad-nosed' saurolophine hadrosaurid (Dinosauria, Ornithopoda) from the late Campanian (Cretaceous) of northern Mexico". Historical Biology 24 (6): 607–619. doi:10.1080/08912963.2012.671311.
3. & Scheetz (2014): A new saurolophine hadrosaurid (Dinosauria: Ornithopoda) from the Campanian of Utah, North America Journal of Systematic Paleontology. doi: 10.1080/14772019.2014.950614
4. Albert Prieto-Márquez, Jonathan R. Wagner, Phil R. Bell and Luis M. Chiappe, 2014, "The late-surviving ‘duck-billed’ dinosaur Augustynolophus from the upper Maastrichtian of western North America and crest evolution in Saurolophini", Geological Magazine doi:10.1017/S0016756814000284
5. 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.
6. Prieto-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.
7. Godefroit, P.; Bolotsky, Y. L.; Lauters, P. (2012). Joger, Ulrich, ed. "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.