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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

No	Dinosaur	Length [m]	Length [ft]
1	Shantungosaurus giganteus	15.3 m	50.2 ft
2	Edmontosaurus annectens	15.0 m	49.2 ft
3	Barsboldia sicinskii	14.3 m	46.9 ft
4	Hypsibema crassicauda	14.0 m	45.9 ft
5	“Hadrosaurus” breviceps	13.7 m	44.9 ft
6	Saurolophus angustirostris	12.9 m	42.3 ft
7	“Trachodon” longiceps	12.8 m	42.0 ft
8	Iguanodon bernissartensis	12.5 m	41.0 ft
9	Magnapaulia laticaudus	12.5 – 14.8 m	41.0 – 48.6 ft
10	Parrosaurus missouriensis	12.0 m	39.4 ft
11	Edmontosaurus regalis	11.5 m	37.7 ft
12	Ornithotarsus immanis	11.2 m	36.7 ft
13	Amurosaurus riabinini	10.9 m	35.8 ft
14	Probrachylophosaurus bergei	10.6 m	34.8 ft
15	Charonosaurus jiayinensis	10.5 m	34.4 ft
16	Delapparentia turolensis	10.5 m	34.4 ft
17	Hypacrosaurus stebingeri	10.5 m	34.4 ft
18	Hypacrosaurus altispinus	10.4 m	34.1 ft
19	Trachodon mirabilis	10.4 m	34.1 ft
20	Saurolophus osborni	10.2 m	33.5 ft
21	Barilium dawsoni	10.0 m	32.8 ft
22	Lanzhousaurus magnidens	10.0 m	32.8 ft
23	Shuangmiaosaurus gilmorei	10.0 m	32.8 ft
24	Iguanacolossus fortis	9.8 m	32.2 ft
25	“Iguanodon” orientalis	9.8 m	32.2 ft
26	Tsintaosaurus spinorhinus	9.8 m	32.2 ft
27	Brachylophosaurus canadensis	9.7 m	31.8 ft
28	Parasaurolophus tubicen	9.7 m	31.8 ft
29	Corythosaurus casuarius	9.5 m	31.2 ft
30	Magnamanus soriaensis	9.5 m	31.2 ft
31	Yunganglong datongensis	9.5 m	31.2 ft
32	Datonglong tianzhenensis	9.3 m	30.5 ft
33	Prosaurolophus maximus	9.3 m	30.5 ft
34	Stegosaurus ungulatus	9.3 m	30.5 ft
35	“Hadrosaurus” cavatus	9.2 m	30.2 ft
36	Triceratops maximus	9.2 m	30.2 ft
37	Kritosaurus navajovius	9.1 m	29.9 ft
38	Bayannurosaurus perfectus	9.0 m	29.5 ft
39	Gryposaurus alsatei	9.0 m	29.5 ft
40	“Hanwulosaurus”	9.0 m	29.5 ft
41	Olorotitan arharensis	8.9 m	29.2 ft
42	Augustynolophus morrisi	8.8 m	28.9 ft
43	“Claosaurus” affinis	8.8 m	28.9 ft
44	Lurdusaurus arenatus	8.8 m	28.9 ft
45	Muttaburrasaurus langdoni	8.8 m	28.9 ft
46	Kukufeldia tilgatensis	8.7 m	28.5 ft
47	Parasaurolophus cyrtocristatus	8.7 m	28.5 ft
48	Secernosaurus koerneri	8.7 m	28.5 ft
49	Anasazisaurus horneri	8.6 m	28.2 ft
50	“Brachylophosaurus” goodwini	8.6 m	28.2 ft
51	Corythosaurus intermedius	8.6 m	28.2 ft
52	Plesiohadros djadokhtaensis	8.6 m	28.2 ft
53	Ugrosaurus olsoni	8.6 m	28.2 ft
54	Triceratops horridus	8.5 m	27.9 ft
55	Eotriceratops xerinsularis	8.4 m	27.6 ft
56	Maiasaura peeblesorum	8.4 m	27.6 ft
57	Mandschurosaurus amurensis	8.4 m	27.6 ft
58	Triceratops prorsus	8.4 m	27.6 ft
59	Wulagasaurus dongi	8.4 m	27.6 ft
60	Kerberosaurus manakini	8.3 m	27.2 ft
61	Ouranosaurus nigeriensis	8.3 m	27.2 ft
62	Triceratops albertensis	8.3 m	27.2 ft
63	Adelolophus hutchisoni	8.2 m	26.9 ft
64	Dacentrurus armatus	8.2 m	26.9 ft
65	Parasaurolophus walkeri	8.2 m	26.9 ft
66	Gryposaurus notabilis	8.1 m	26.6 ft
67	Ankylosaurus magniventris	8.0 m	26.2 ft
68	Gryposaurus latidens	8.0 m	26.2 ft
69	Hypselospinus fittoni	8.0 m	26.2 ft
70	Kamuysaurus japonicus	8.0 m	26.2 ft
71	Laiyangosaurus youngi	8.0 m	26.2 ft
72	Sirindhorna khoratensis	8.0 m	26.2 ft
73	Stegosaurus armatus	8.0 m	26.2 ft
74	Stegosaurus stenops	8.0 – 9.3 m	26.2 – 30.5 ft
75	Torosaurus latus	8.0 m	26.2 ft
76	Trachodon cantabrigiensis	8.0 m	26.2 ft