Saurolophinae

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Saurolophines
Temporal range: Late Cretaceous, 79–66 Ma
Oxford Edmontosaurus.jpg
Fossil mount of Edmontosaurus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Suborder: Ornithopoda
Family: Hadrosauridae
Clade: Euhadrosauria
Subfamily: Saurolophinae
Lambe, 1918
Type species
Saurolophus osborni
Brown, 1912
Genera and tribes[1]

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

UTEP 37.7 (Unnamed Big Bend species)

Secernosaurus

Willinakaqe

Graphical timeline of taxonomy[edit]

21st century in paleontology20th century in paleontology19th century in paleontology2090s in paleontology2080s in paleontology2070s in paleontology2060s in paleontology2050s in paleontology2040s in paleontology2030s in paleontology2020s in paleontology2010s in paleontology2000s in paleontology1990s in paleontology1980s in paleontology1970s in paleontology1960s in paleontology1950s in paleontology1940s in paleontology1930s in paleontology1920s in paleontology1910s in paleontology1900s in paleontology1890s in paleontology1880s in paleontology1870s in paleontology1860s in paleontology1850s in paleontology1840s in paleontology1830s in paleontology1820s in paleontologyAugustynolophusWillinakaqeSecernosaurusKritosaurusGryposaurusAnasazisaurusNaashoibitosaurusSaurolophusProsaurolophusEdmontosaurusShantungosaurusWulagasaurusKundurosaurusKerberosaurusBrachylophosaurusMaiasauraAcristavusRhinorex21st century in paleontology20th century in paleontology19th century in paleontology2090s in paleontology2080s in paleontology2070s in paleontology2060s in paleontology2050s in paleontology2040s in paleontology2030s in paleontology2020s in paleontology2010s in paleontology2000s in paleontology1990s in paleontology1980s in paleontology1970s in paleontology1960s in paleontology1950s in paleontology1940s in paleontology1930s in paleontology1920s in paleontology1910s in paleontology1900s in paleontology1890s in paleontology1880s in paleontology1870s in paleontology1860s in paleontology1850s in paleontology1840s in paleontology1830s in paleontology1820s in paleontology

See also[edit]

References[edit]

  1. ^ a b c 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. ^ 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 4047018Freely accessible. PMID 24901454. 
  3. ^ a b 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. 
  4. ^ 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.