The longest Ornithischians (Ornithischia) TOP 10

The largest Ornithischians (Ornithischia) TOP 10

Length, dimensions, size of Ornithischians (Ornithischia)

The Ornithischia is one of the two clade of dinosaurs in addition to the Saurischia.

This distinction between dinosaurs was a big step towards better understanding of their relationships and was made in 1887 by Harry Govier Seeley from King’s College London . By then some well-preserved dinosaur skeletons had been described , and Seeley noticed that they could be divided into two groups based on their pelvic anatomy . Seeley called these two groups Saurischia and Ornithischia.

Today we present the world’s largest list of Ornithischians (Ornithischia) ranked by length. Soon we will present a list of the heaviest Ornithischians (Ornithischia).

The longest Ornithischians (Ornithischia) TOP 10


NoDinosaurLength [m]Length [ft]
1Shantungosaurus giganteus15.3 m50.2 ft
2Edmontosaurus annectens15.0 m49.2 ft
3Barsboldia sicinskii14.3 m46.9 ft
4Hypsibema crassicauda14.0 m45.9 ft
5“Hadrosaurus” breviceps13.7 m44.9 ft
6Saurolophus angustirostris12.9 m42.3 ft
7“Trachodon” longiceps12.8 m42.0 ft
8Iguanodon bernissartensis12.5 m41.0 ft
9Magnapaulia laticaudus12.5 – 14.8 m41.0 – 48.6 ft
10Parrosaurus missouriensis12.0 m39.4 ft
11Edmontosaurus regalis11.5 m37.7 ft
12Ornithotarsus immanis11.2 m36.7 ft
13Amurosaurus riabinini10.9 m35.8 ft
14Probrachylophosaurus bergei10.6 m34.8 ft
15Charonosaurus jiayinensis10.5 m34.4 ft
16Delapparentia turolensis10.5 m34.4 ft
17Hypacrosaurus stebingeri10.5 m34.4 ft
18Hypacrosaurus altispinus10.4 m34.1 ft
19Trachodon mirabilis10.4 m34.1 ft
20Saurolophus osborni10.2 m33.5 ft
21Barilium dawsoni10.0 m32.8 ft
22Lanzhousaurus magnidens10.0 m32.8 ft
23Shuangmiaosaurus gilmorei10.0 m32.8 ft
24Iguanacolossus fortis9.8 m32.2 ft
25“Iguanodon” orientalis9.8 m32.2 ft
26Tsintaosaurus spinorhinus9.8 m32.2 ft
27Brachylophosaurus canadensis9.7 m31.8 ft
28Parasaurolophus tubicen9.7 m31.8 ft
29Corythosaurus casuarius9.5 m31.2 ft
30Magnamanus soriaensis9.5 m31.2 ft
31Yunganglong datongensis9.5 m31.2 ft
32Datonglong tianzhenensis9.3 m30.5 ft
33Prosaurolophus maximus9.3 m30.5 ft
34Stegosaurus ungulatus9.3 m30.5 ft
35“Hadrosaurus” cavatus9.2 m30.2 ft
36Triceratops maximus9.2 m30.2 ft
37Kritosaurus navajovius9.1 m29.9 ft
38Bayannurosaurus perfectus9.0 m29.5 ft
39Gryposaurus alsatei9.0 m29.5 ft
40“Hanwulosaurus”9.0 m29.5 ft
41Olorotitan arharensis8.9 m29.2 ft
42Augustynolophus morrisi8.8 m28.9 ft
43“Claosaurus” affinis8.8 m28.9 ft
44Lurdusaurus arenatus8.8 m28.9 ft
45Muttaburrasaurus langdoni8.8 m28.9 ft
46Kukufeldia tilgatensis8.7 m28.5 ft
47Parasaurolophus cyrtocristatus8.7 m28.5 ft
48Secernosaurus koerneri8.7 m28.5 ft
49Anasazisaurus horneri8.6 m28.2 ft
50“Brachylophosaurus” goodwini8.6 m28.2 ft
51Corythosaurus intermedius8.6 m28.2 ft
52Plesiohadros djadokhtaensis8.6 m28.2 ft
53Ugrosaurus olsoni8.6 m28.2 ft
54Triceratops horridus8.5 m27.9 ft
55Eotriceratops xerinsularis8.4 m27.6 ft
56Maiasaura peeblesorum8.4 m27.6 ft
57Mandschurosaurus amurensis8.4 m27.6 ft
58Triceratops prorsus8.4 m27.6 ft
59Wulagasaurus dongi8.4 m27.6 ft
60Kerberosaurus manakini8.3 m27.2 ft
61Ouranosaurus nigeriensis8.3 m27.2 ft
62Triceratops albertensis8.3 m27.2 ft
63Adelolophus hutchisoni8.2 m26.9 ft
64Dacentrurus armatus8.2 m26.9 ft
65Parasaurolophus walkeri8.2 m26.9 ft
66Gryposaurus notabilis8.1 m26.6 ft
67Ankylosaurus magniventris8.0 m26.2 ft
68Gryposaurus latidens8.0 m26.2 ft
69Hypselospinus fittoni8.0 m26.2 ft
70Kamuysaurus japonicus8.0 m26.2 ft
71Laiyangosaurus youngi8.0 m26.2 ft
72Sirindhorna khoratensis8.0 m26.2 ft
73Stegosaurus armatus8.0 m26.2 ft
74Stegosaurus stenops8.0 – 9.3 m26.2 – 30.5 ft
75Torosaurus latus8.0 m26.2 ft
76Trachodon cantabrigiensis8.0 m26.2 ft



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