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The longest and largest ornithopods

The longest and largest ornithopods Top 10

Ornithopoda means “bird feet”, from the Greek ornithos (“bird”) and pous (“feet”).

Ornithopods are a group of ornithischian dinosaurs that started out as small, bipedal running grazers, and grew in size and numbers until they became one of the most successful groups of herbivores in the Cretaceous world, and dominated the North American landscape.

Ornithopoda is an order of dinosaurs that includes a diverse group of herbivorous species that are characterized by their bipedal posture and bird-like feet. They lived during the Jurassic and Cretaceous periods, and were widespread throughout the world.

Shantungosaurus giganteus

Ornithopods were generally smaller than other groups of dinosaurs, with many species reaching lengths of only a few meters. They had relatively long legs and small, slender bodies, and their feet were adapted for running and walking on two legs. Most ornithopods were herbivorous, and they had beak-like jaws and cheek teeth that were adapted for grinding up plant material.

One of the most well-known groups of ornithopods is the hadrosaurs, or “duck-billed” dinosaurs, which are known for their distinctive crests and head shapes. Other important groups within Ornithopoda include the iguanodontids, hypsilophodontids, and pachycephalosaurids.

Shantungosaurus, meaning “Shandong Lizard”. It is one of the longest and largest known hadrosaurids; the composite skeleton of a medium-sized individual mounted at the Geological Institute of China in Beijing measures 14.72 meters (48.3 ft) in length, and the type skull is 1.63 meters (5.3 ft) long. The weight of this genus is estimated at up to 16 tonnes (18 short tons). With a composite mounted skeleton 16.6 meters long (54.5 ft) it is currently the largest known ornithischian and, indeed the largest non-sauropod dinosaur.

The longest ornithopods Top 10

  1. Huaxiaosaurus aigahtens: 18.7 m (61 ft)
  2. Shantungosaurus giganteus: 15–17 m (49–56 ft)
  3. Hypsibema crassicauda: 15 m (49 ft)
  4. Hypsibema missouriensis (Parrosaurus): 15 m (49 ft)
  5. Barsboldia: 12-14 m (39 – 46 ft)
  6. Edmontosaurus regalis: 9–13 m (30–43 ft)
  7. Iguanodon bernissartensis: 10–13 m (33–43 ft)
  8. Magnapaulia laticaudus: 12.5 m (41 ft)
  9. Saurolophus angustirostris: 12 m (39 ft)
  10. Ornithotarsus immanis: 12 m (39 ft)
  11. Edmontosaurus annectens (Anatosaurus): 9–12 m (30–39 ft)
  12. Kritosaurus sp.: 11 m (36 ft)
  13. Brachylophosaurus canadensis: 8.5–11 m (28–36 ft)
  14. Kritosaurus: 11 m (36 ft)
  15. Parasaurolophus: 10 m (33 ft)
Largest ornithopods
The longest and largest ornithopods.

The longest ornithopods Top 10 – update AD 2020


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 m41.0 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
34“Hadrosaurus” cavatus9.2 m30.2 ft
35Kritosaurus navajovius9.1 m29.9 ft
36Bayannurosaurus perfectus9.0 m29.5 ft
37Gryposaurus alsatei9.0 m29.5 ft
38Olorotitan arharensis8.9 m29.2 ft
39Augustynolophus morrisi8.8 m28.9 ft
40“Claosaurus” affinis8.8 m28.9 ft
41Lurdusaurus arenatus8.8 m28.9 ft
42Muttaburrasaurus langdoni8.8 m28.9 ft
43Kukufeldia tilgatensis8.7 m28.5 ft
44Parasaurolophus cyrtocristatus8.7 m28.5 ft
45Secernosaurus koerneri8.7 m28.5 ft
46Anasazisaurus horneri8.6 m28.2 ft
47“Brachylophosaurus” goodwini8.6 m28.2 ft
48Corythosaurus intermedius8.6 m28.2 ft
49Plesiohadros djadokhtaensis8.6 m28.2 ft
50Maiasaura peeblesorum8.4 m27.6 ft
51Mandschurosaurus amurensis8.4 m27.6 ft
52Wulagasaurus dongi8.4 m27.6 ft
53Kerberosaurus manakini8.3 m27.2 ft
54Ouranosaurus nigeriensis8.3 m27.2 ft
55Adelolophus hutchisoni8.2 m26.9 ft
56Parasaurolophus walkeri8.2 m26.9 ft
57Gryposaurus notabilis8.1 m26.6 ft
58Gryposaurus latidens8.0 m26.2 ft
59Hypselospinus fittoni8.0 m26.2 ft
60Kamuysaurus japonicus8.0 m26.2 ft
61Laiyangosaurus youngi8.0 m26.2 ft
62Sirindhorna khoratensis8.0 m26.2 ft
63Trachodon cantabrigiensis8.0 m26.2 ft



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