Iguanodontia

Reconstruction of Iguanodon atherfieldensis, copyright Steveoc 86.

Belongs within: Ornithopoda.
Contains: Hadrosauroidea.

The Iguanodontia are a diverse group of bipedal and facultatively quadrupedal herbivorous dinosaurs known from the Late Jurassic and Cretaceous, recognised by Norman (2004) as the clade of all taxa closer to Edmontosaurus than Thescelosaurus.

Characters (from Norman 2004): Premaxilla with transversely expanded and edentulous margin; predentary with smoothly convex rostral margin in dorsal aspect; dentary ramus deep, with parallel dorsal and ventral borders; sternal rib ossification absent; one phalanx lost on manus digit III; prepubic process compressed, blade-shaped.

<==Iguanodontia [Iguanodontidae]
    |  i. s.: Albisaurus scutifer Fritsch 1905 (n. d.) N04
    |         Loncosaurus argentinus Ameghino 1898 (n. d.) N04
    |         Tichosteus (n. d.) N04
    |           |--T. aequifacies Cope 1877 (n. d.) N04
    |           `--T. lucasanus Cope 1877 (n. d.) N04
    |--Tenontosaurus Ostrom 1970 N04
    |    |--T. dossi Winkler, Murry & Jacobs 1997 N04
    |    `--T. tilletti Ostrom 1970 N04
    `--+--Muttaburrasaurus Bartholomai & Molnar 1981 N04
       |    `--M. langdoni Bartholomai & Molnar 1981 N04
       `--Dryomorpha N04
            |  i. s.: Callovosaurus Galton 1980 (n. d.) N85, N04
            |           `--*C. leedsi (Lydekker 1889) [=Camptosaurus leedsi] N04
            |         Kangnasaurus coetzeei Haughton 1915 (n. d.) N85, N04
            |--Dryosauridae N04
            |    |--Planicoxa DiCroce & Carpenter 2001 N04
            |    |    `--P. venenica DiCroce & Carpenter 2001 N04
            |    |--Dryosaurus Marsh 1894 [incl. Dysalotosaurus Virchow 1919] N04
            |    |    |--D. altus (Marsh 1878) [=Laosaurus altus] N04
            |    |    `--D. lettowvorbecki (Virchow 1919) [=Dysalotosaurus lettowvorbecki] N04
            |    `--Valdosaurus Galton 1977 N04
            |         |--V. canaliculatus (Galton 1975) (see below for synonymy) N04
            |         `--V. nigeriensis Galton & Taquet 1982 N04
            `--Ankylopollexia N04
                 |  i. s.: Draconyx Mateus & Antunes 2001 N04
                 |           `--D. loureiroi Mateus & Antunes 2001 N04
                 |--Camptosaurus Marsh 1885 (see below for synonymy) N04
                 |    |--C. amplus (Marsh 1879) [=Camptonotus amplus] N04
                 |    |--C. depressus Gilmore 1909 N04
                 |    |--C. dispar (Marsh 1879) (see below for synonymy) N04
                 |    |--C. hoggi (Owen 1874) [=Iguanodon hoggi] N04
                 |    `--C. prestwichii (Hulke 1880) [=Iguanodon prestwichii] N04
                 `--Styracosterna N04
                      |--Lurdusaurus Taquet & Russell 1999 [incl. Gravisaurus Chabli 1988] N04
                      |    `--L. arenatus Taquet & Russell 1999 [incl. Gravisaurus tenerensis Chabli 1988] N04
                      |--Equijubus You, Luo et al. 2003 N04
                      |    `--E. normani You, Luo et al. 2003 N04
                      `--Iguanodontoidea [Hadrosauriformes] N04
                           |  i. s.: Craspedodon Dollo 1883 N04
                           |           `--C. lonzeensis Dollo 1883 N04
                           |         Fukuisaurus Kobayashi & Azuma 2003 N04
                           |           `--F. tetoriensius Kobayashi & Azuma 2003 N04
                           |         Shuangmiaosaurus You, Ji et al. 2003 N04
                           |           `--S. gilmorei You, Ji et al. 2003 N04
                           |--Hadrosauroidea N04
                           `--Iguanodon Mantell 1825 [incl. Heterosaurus Cornuel 1850, Iguanosaurus Ritgen 1828] N04
                                |--*I. anglicus Holl 1829 WU03, N04 (see below for synonymy)
                                |--I. atherfieldensis Hooley 1924 (see below for synonymy) N04
                                |--I. bernissartensis Boulenger 1881 [incl. I. seelyi Hulke 1882] N04
                                |--I. dawsoni Lydekker 1888 N04
                                |--I. exogirarus Fritsch 1878 (n. d.) N04
                                |--I. fittoni Lydekker 1889 [incl. I. hollingtoniensis Lydekker 1889] N04
                                |--I. lakotaensis Weishampel & Bjork 1989 N04
                                `--I. ottingeri Galton & Jensen 1979 (n. d.) N04

Camptosaurus Marsh 1885 [incl. Brachyrophus Cope 1878, Cumnoria Seeley 1999, Symphyrophus Cope 1878; Camptosauridae] N04

Camptosaurus dispar (Marsh 1879) [=Camptonotus dispar; incl. Brachyrophus altarkansanus Cope 1878, Camptosaurus browni Gilmore 1909, Camptosaurus medius Marsh 1894, Symphyrophus musculosus Cope 1878, Camptosaurus nanus Marsh 1894] N04

*Iguanodon anglicus Holl 1829 WU03, N04 [incl. Cetiosaurus brevis Owen 1842 N04, Streptospondylus major Owen 1842 N04]

Iguanodon atherfieldensis Hooley 1924 [incl. Sphenospondylus gracilis Lydekker 1888, I. mantelli Mayer 1832, Heterosaurus neocomiensis Cornuel 1850, Vectisaurus valdensis Hulke 1879] N04

Valdosaurus canaliculatus (Galton 1975) [=Dryosaurus canaliculatus; incl. Camptosaurus valdensis Lydekker 1889] N04

*Type species of generic name indicated

REFERENCES

[N85] Norman, D. 1985 (reprinted 2000). The Illustrated Encyclopedia of Dinosaurs. Salamander Books: London.

[N04] Norman, D. B. 2004. Basal Iguanodontia. In: Weishampel, D. B., P. Dodson & H. Osmólska (eds) The Dinosauria 2^nd ed. pp. 413–437. University of California Press: Berkeley.

[WU03] Wilson, J. A., & P. Upchurch. 2003. A revision of Titanosaurus Lydekker (Dinosauria—Sauropoda), the first dinosaur genus with a ‘Gondwanan’ distribution. Journal of Systematic Palaeontology 1 (3): 125–160.