Saurolophinae


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. Recent phylogenetic work by Hai Xing indicates that Hadrosaurus is placed within the monophyletic group containing all non-lambeosaurine hadrosaurids. 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. 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 defined Hadrosaurinae as only the lineage containing H. foulkii, and used the name Saurolophinae instead for the traditional grouping.
The cladogram below follows Godefroit et al. analysis.
The following cladogram was recovered in the 2013 phylogenetic analysis by Prieto-Márquez.

Graphical timeline of taxonomy


ImageSize = width:1500px height:auto barincrement:15px
PlotArea = left:10px bottom:50px top:10px right:10px
Period = from:1824 till:2100
TimeAxis = orientation:horizontal
ScaleMajor = unit:year increment:50 start:1824
ScaleMinor = unit:year increment:10 start:1824
TimeAxis = orientation:hor
AlignBars = justify
Colors =
#legends
id:CAR value:claret
id:ANK value:rgb
id:HER value:teal
id:HAD value:green
id:OMN value:blue
id:black value:black
id:white value:white
id:1900s value:rgb
id:2000s value:rgb
id:2000syears value:rgb
id:1900syears value:rgb
id:1700s value:rgb
id:1700syears value:rgb
id:latecretaceous value:rgb
id:1800syears value:rgb
id:paleogene value:rgb
id:paleocene value:rgb
id:eocene value:rgb
id:oligocene value:rgb
id:1800s value:rgb
id:miocene value:rgb
id:pliocene value:rgb
id:quaternary value:rgb
id:pleistocene value:rgb
id:holocene value:rgb
BarData=
bar:eratop
bar:space
bar:periodtop
bar:space
bar:NAM1
bar:NAM2
bar:NAM3
bar:NAM4
bar:NAM5
bar:NAM6
bar:space
bar:period
bar:space
bar:era
PlotData=
align:center textcolor:black fontsize:M mark: width:25
shift:

bar:periodtop
from: 1824 till: 1830 color:1800syears text:20s
from: 1830 till: 1840 color:1800syears text:30s
from: 1840 till: 1850 color:1800syears text:40s
from: 1850 till: 1860 color:1800syears text:50s
from: 1860 till: 1870 color:1800syears text:60s
from: 1870 till: 1880 color:1800syears text:70s
from: 1880 till: 1890 color:1800syears text:80s
from: 1890 till: 1900 color:1800syears text:90s
from: 1900 till: 1910 color:1900syears text:00s
from: 1910 till: 1920 color:1900syears text:10s
from: 1920 till: 1930 color:1900syears text:20s
from: 1930 till: 1940 color:1900syears text:30s
from: 1940 till: 1950 color:1900syears text:40s
from: 1950 till: 1960 color:1900syears text:50s
from: 1960 till: 1970 color:1900syears text:60s
from: 1970 till: 1980 color:1900syears text:70s
from: 1980 till: 1990 color:1900syears text:80s
from: 1990 till: 2000 color:1900syears text:90s
from: 2000 till: 2010 color:2000syears text:00s
from: 2010 till: 2020 color:2000syears text:10s
from: 2020 till: 2030 color:2000syears text:20s
from: 2030 till: 2040 color:2000syears text:30s
from: 2040 till: 2050 color:2000syears text:40s
from: 2050 till: 2060 color:2000syears text:50s
from: 2060 till: 2070 color:2000syears text:60s
from: 2070 till: 2080 color:2000syears text:70s
from: 2080 till: 2090 color:2000syears text:80s
from: 2090 till: 2100 color:2000syears text:90s
bar:eratop
from: 1824 till: 1900 color:1800s text:19th
from: 1900 till: 2000 color:1900s text:20th
from: 2000 till: 2100 color:2000s text:21st
PlotData=
align:left fontsize:M mark: width:5 anchor:till align:left
color:1900s bar:NAM5 at:2014 mark: text:Rhinorex
color:1900s bar:NAM6 at:2011 mark: text:Acristavus
color:1900s bar:NAM4 at:1979 mark: text:Maiasaura
color:1900s bar:NAM1 at:1953 mark: text:Brachylophosaurus
color:1900s bar:NAM2 at:2004 mark: text:Kerberosaurus
color:1900s bar:NAM2 at:2012 mark: text:Kundurosaurus
color:1900s bar:NAM3 at:2008 mark: text:Wulagasaurus
color:1800s bar:NAM2 at:1973 mark: text:Shantungosaurus
color:1900s bar:NAM1 at:1892 mark: text:Edmontosaurus
color:1900s bar:NAM4 at:1916 mark: text:Prosaurolophus
color:1800s bar:NAM2 at:1912 mark: text:Saurolophus
color:1800s bar:NAM5 at:1993 mark: text:Naashoibitosaurus
color:1900s bar:NAM1 at:1993 mark: text:Anasazisaurus
color:1800s bar:NAM1 at:1914 mark: text:Gryposaurus
color:1800s bar:NAM3 at:1910 mark: text:Kritosaurus
color:1900s bar:NAM3 at:1979 mark: text:Secernosaurus
color:1900s bar:NAM4 at:2010 mark: text:Willinakaqe
color:1900s bar:NAM1 at:2014 mark: text:Augustynolophus
PlotData=
align:center textcolor:black fontsize:M mark: width:25
bar:period
from: 1824 till: 1830 color:1800syears text:20s
from: 1830 till: 1840 color:1800syears text:30s
from: 1840 till: 1850 color:1800syears text:40s
from: 1850 till: 1860 color:1800syears text:50s
from: 1860 till: 1870 color:1800syears text:60s
from: 1870 till: 1880 color:1800syears text:70s
from: 1880 till: 1890 color:1800syears text:80s
from: 1890 till: 1900 color:1800syears text:90s
from: 1900 till: 1910 color:1900syears text:00s
from: 1910 till: 1920 color:1900syears text:10s
from: 1920 till: 1930 color:1900syears text:20s
from: 1930 till: 1940 color:1900syears text:30s
from: 1940 till: 1950 color:1900syears text:40s
from: 1950 till: 1960 color:1900syears text:50s
from: 1960 till: 1970 color:1900syears text:60s
from: 1970 till: 1980 color:1900syears text:70s
from: 1980 till: 1990 color:1900syears text:80s
from: 1990 till: 2000 color:1900syears text:90s
from: 2000 till: 2010 color:2000syears text:00s
from: 2010 till: 2020 color:2000syears text:10s
from: 2020 till: 2030 color:2000syears text:20s
from: 2030 till: 2040 color:2000syears text:30s
from: 2040 till: 2050 color:2000syears text:40s
from: 2050 till: 2060 color:2000syears text:50s
from: 2060 till: 2070 color:2000syears text:60s
from: 2070 till: 2080 color:2000syears text:70s
from: 2080 till: 2090 color:2000syears text:80s
from: 2090 till: 2100 color:2000syears text:90s
bar:era
from: 1824 till: 1900 color:1800s text:19th
from: 1900 till: 2000 color:1900s text:20th
from: 2000 till: 2100 color:2000s text:21st