Dinosaur size

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For other large prehistoric reptiles, see Largest prehistoric organisms#Reptiles (Reptilia).

Size has been one of the most interesting aspects of dinosaur science to the general public. This article lists the largest and smallest dinosaurs from various groups, sorted in order of weight and length.

Scale diagram comparing a human and the largest known dinosaurs of five major clades

This list excludes unpublished size estimates (such as those for Bruhathkayosaurus, possibly the largest dinosaur of all). In some cases, dinosaurs are known that will be included on this list if/when they are officially described. In addition, weight estimates for dinosaurs are much more variable than length estimates, because estimating length for extinct animals is much more easily done from a skeleton than estimating weight.

General records[edit]

Longest dinosaurs[edit]

See also Longest sauropods

The ten longest known dinosaurs, based on published length estimates.

  1. Amphicoelias fragillimus: 58 m (190 ft)[1]
  2. Turiasaurus riodevensis: 30–39 m (98–128 ft)[2][3][4]
  3. Argentinosaurus huinculensis: 30–36 m (98–118 ft)?[1][4]
  4. Mamenchisaurus sinocanadorum: 35 m (115 ft)[2][dubious ]
  5. Supersaurus vivianae: 33–34 m (108–112 ft)[5]
  6. Sauroposeidon proteles: 28–34 m (92–112 ft)[1][6][7]
  7. Futalognkosaurus dukei: 28–34 m (92–112 ft)[4][8]
  8. "Antarctosaurus" giganteus: 30–33 m (98–108 ft)[2][4]
  9. Diplodocus hallorum: 30–33 m (98–108 ft)[5][9]
  10. Xinjiangtitan shanshanesis: 30–32 m (98–105 ft)[10]

Heaviest dinosaurs[edit]

See also Heaviest sauropods

The ten largest known dinosaur species by weight, based on published weight estimates.

  1. Amphicoelias fragillimus: 122.4 t (134.9 short tons)[1]
  2. Argentinosaurus huinculensis: 60–88 t (66–97 short tons)[11][12][13]
  3. Puertasaurus reuili: (comparable to Argentinosaurus)[14]
  4. Futalognkosaurus dukei: (comparable to Argentinosaurus and Puertasaurus)[8]
  5. "Antarctosaurus" giganteus: 69 t (76 short tons)[12]
  6. Sauroposeidon proteles: 50–60 t (55–66 short tons)[6][7]
  7. Dreadnoughtus schrani: 59.3 t (65.4 short tons)[15]
  8. Paralititan stromeri: 59 t (65 short tons)[11]
  9. Unnamed (MPM-PV-39): 58 t (64 short tons)[16]
  10. Brachiosaurus altithorax: 28.7–56.3 t (31.6–62.1 short tons)[17][18][19]

Shortest non-avian dinosaurs[edit]

The shortest known non-avian dinosaur species, based on published length estimates.

  1. Epidexipteryx hui: 25 cm (9.8 in)[20]
  2. Eosinopteryx brevipenna: 30 cm (12 in)[21]
  3. "Ornithomimus" minutus: 30 cm (12 in)[4]
  4. Palaeopteryx thomsoni: 30 cm (12 in)?[4]
  5. Nqwebasaurus thwazi: 30 cm (0.98 ft)[22]
  6. Parvicursor remotus: 30–39 cm (12–15 in)[4][23]
  7. Unnamed (BEXHM: 2008.14.1): 33–50 cm (13–20 in)[4][24]
  8. Xixianykus zhangi: 50 cm (20 in)[4]
  9. Alwalkeria maleriensis: 50 cm (20 in)?[4]

Lightest non-avian dinosaurs[edit]

The ten smallest known non-avian dinosaurs by weight, based on published weight estimates.

  1. Parvicursor remotus: 137–162 g (4.8–5.7 oz)[19][23]
  2. Epidexipteryx hui: 164–391 g (5.8–13.8 oz)[19][20]
  3. Compsognathus longipes: 0.26–3.5 kg (0.57–7.72 lb)[22][25]
  4. Ceratonykus oculatus: 0.3 kg (0.66 lb)[19]
  5. Juravenator starki: 0.34–0.41 kg (0.75–0.90 lb)[19][22]
  6. Ligabueino andesi: 0.35 kg (0.77 lb)[19]
  7. Microraptor zhaoianus: 0.4 kg (0.88 lb)[19]
  8. Fruitadens haagarorum: 0.50–0.75 kg (1.1–1.7 lb)[19][26]
  9. Sinosauropteryx prima: 0.55–0.99 kg (1.2–2.2 lb)[19][22]
  10. Rahonavis ostromi: 0.58 kg (1.3 lb)[19]

Theropods[edit]

Main article: Theropoda

Sizes are given with a range, where possible, of estimates that have not been contradicted by more recent studies. In cases where a range of currently accepted estimates exist, sources are given for the sources with the lowest and highest estimates, respectively, and only the highest values are given if these individual sources give a range of estimates.

Longest theropods[edit]

Size comparison of selected giant theropod dinosaurs

Size by overall length, including tail, of all theropods over 12 meters.

  1. Spinosaurus aegyptiacus: 14.3–18 m (47–59 ft)[22][27]
  2. Oxalaia quilombensis: 12–14 m (39–46 ft)[28]
  3. Giganotosaurus carolinii: 12.2–13.2 m (40–43 ft)[4][29]
  4. Carcharodontosaurus saharicus: 12–13 m (39–43 ft)[4][22]
  5. Chilantaisaurus tashuikouensis: 11–13 m (36–43 ft)?[2][4]
  6. Saurophaganax maximus: 10.5–13 m (34–43 ft)?[2][4]
  7. Mapusaurus roseae: 12.2–12.6 m (40–41 ft)[4][29]
  8. Tyrannosaurus rex: 12.3 m (40 ft)[30]
  9. Tyrannotitan chubutensis: 12.2 m (40 ft)[4]
  10. Acrocanthosaurus atokensis: 11–12 m (36–39 ft)[2][4]
  11. Bahariasaurus ingens: 11–12 m (36–39 ft)?[2][4]
  12. Torvosaurus tanneri: 9–12 m (30–39 ft)[4]
  13. Allosaurus fragilis: 8.5–12 m (28–39 ft)[4]

Heaviest theropods[edit]

Size by overall weight of all theropods with maximum weight estimates of over 5 metric tons.

  1. Spinosaurus aegyptiacus: 7–20.9 t (7.7–23.0 short tons)[22][27]
  2. Carcharodontosaurus saharicus: 6.1–15.1 t (6.7–16.6 short tons)[22][25]
  3. Giganotosaurus carolinii: 6.1–13.8 t (6.7–15.2 short tons)[19][22][25][31]
  4. Tyrannosaurus rex: 6–9.5 t (6.6–10.5 short tons)[19][22][30][32]
  5. Oxalaia quilombensis: 5–7 t (5.5–7.7 short tons)[28][31]
  6. Acrocanthosaurus atokensis: 5.6–6.2 t (6.2–6.8 short tons)[22][33]
  7. Tyrannotitan chubutensis: 4.9–5.6 t (5.4–6.2 short tons)[19][31]
  8. Suchomimus tenerensis: 2.7–5.2 t (3.0–5.7 short tons)[22][25][31]
  9. Therizinosaurus cheloniformis: 5 t (5.5 short tons)[2]
  10. Tarbosaurus bataar: 4–5 t (4.4–5.5 short tons)[2][34]

Shortest non-avian theropods[edit]

Size comparison of the smallest non-avialan theropods

A list of all known non-avian theropods with an adult length of under 70 centimeters, excluding soft tissue such as feathered tails.

  1. Epidexipteryx hui: 25 cm (9.8 in)[20]
  2. Eosinopteryx brevipenna: 30 cm (12 in)[21]
  3. Nqwebasaurus thwazi: 30 cm (12 in)[22]
  4. "Ornithomimus" minutus: 30 cm (12 in)[4]
  5. Palaeopteryx thompsoni: 30 cm (12 in)?[4]
  6. Parvicursor remotus: 30–39 cm (12–15 in)[4][23]
  7. Unnamed (BEXHM: 2008.14.1): 33–50 cm (13–20 in)[4][24]
  8. Xixianykus zhangi: 50 cm (20 in)[4]
  9. Alwalkeria maleriensis: 50 cm (20 in)?[4]
  10. Jinfengopteryx elegans: 55 cm (1.80 ft)[35]
  11. Albinykus baatar: 60 cm (2.0 ft)[4]
  12. Linhenykus monodactylus: 60 cm (2.0 ft)[4]
  13. Pamparaptor micros: 60 cm (2.0 ft)[4]
  14. Shuvuuia deserti: 60 cm (2.0 ft)[4]

Lightest non-avian theropods[edit]

A list of all known non-avian theropods with an adult weight of 1 kilogram or less.

  1. Parvicursor remotus: 137–162 g (4.8–5.7 oz)[19][23]
  2. Epidexipteryx hui: 164–391 g (5.8–13.8 oz)[19][20]
  3. Compsognathus longipes: 0.26–3.5 kg (0.57–7.72 lb)[22][25]
  4. Ceratonykus oculatus: 0.3 kg (0.66 lb)[19]
  5. Juravenator starki: 0.34–0.41 kg (0.75–0.90 lb)[19][22]
  6. Ligabueino andesi: 0.35 kg (0.77 lb)[19]
  7. Microraptor zhaoianus: 0.4 kg (0.88 lb)[19]
  8. Sinosauropteryx prima: 0.55–0.99 kg (1.2–2.2 lb)[19][22]
  9. Rahonavis ostromi: 0.58 kg (1.3 lb)[19]
  10. Mahakala omnogovae: 0.76–0.79 kg (1.7–1.7 lb)[19][31]
  11. Xiaotingia zhengi: 0.79 kg (1.7 lb)[19]
  12. Mei long: 0.85 kg (1.9 lb)[19]
  13. Microraptor gui: 0.95–1.50 kg (2.1–3.3 lb)[19][36]

Sauropods[edit]

Main article: Sauropoda

Sauropod size is difficult to estimate given their usually fragmentary state of preservation. Sauropods are often preserved without their tails, so the margin of error in overall length estimates is high. Mass is calculated using the cube of the length, so for species in which the length is particularly uncertain, the weight is even more so. Estimates that are particularly uncertain (due to very fragmentary or lost material) are preceded by a question mark. Each number represents the highest estimate of a given research paper.

Note that, generally, the giant sauropods can be divided into two categories: the shorter but stockier and more massive forms (mainly titanosaurs and some brachiosaurids), and the longer but slenderer and more light-weight forms (mainly diplodocids).

Longest sauropods[edit]

Size comparison of selected giant sauropod dinosaurs

A list of sauropods that reached 30 meters or more in length, including neck and tail.

  1. Amphicoelias fragillimus: 58 m (190 ft)[1]
  2. Turiasaurus riodevensis: 30–39 m (98–128 ft)[2][3][4]
  3. Argentinosaurus huinculensis: 30–36 m (98–118 ft)[1][4]
  4. Mamenchisaurus sinocanadorum: 35 m (115 ft)[2][dubious ]
  5. Supersaurus vivianae: 33–34 m (108–112 ft)[5]
  6. Futalognkosaurus dukei: 28–34 m (92–112 ft)[4][8]
  7. Sauroposeidon proteles: 28–34 m (92–112 ft)[1][6][7]
  8. "Antarctosaurus" giganteus: 30–33 m (98–108 ft)[2][4]
  9. Diplodocus hallorum: 30–33 m (98–108 ft)[5][9]
  10. Xinjiangtitan shanshanesis: 30–32 m (98–105 ft)[10]
  11. Paralititan stromeri: 20–32 m (66–105 ft)[2][4]
  12. Puertasaurus reuili: 30 m (98 ft)[2]
  13. Alamosaurus sanjuanensis: 30 m (98 ft)[4][37]
  14. Ruyangosaurus giganteus: 30 m (98 ft)[2]
  15. Daxiatitan binglingi: 30 m (98 ft)[38]
  16. Hudiesaurus sinojapanorum: 20–30 m (66–98 ft)[4][39]

Heaviest sauropods[edit]

Size by overall weight of all sauropods 40 metric tons and over.

  1. Amphicoelias fragillimus: 122.4 t (134.9 short tons)[1]
  2. Argentinosaurus huinculensis: 60–90 t (66–99 short tons)[11][12][13][19]
  3. "Antarctosaurus" giganteus: 69–80 t (76–88 short tons)[2][12]
  4. Mamenchisaurus sinocanadorum: 75 t (83 short tons)[2][dubious ]
  5. Sauroposeidon proteles: 40–60 t (44–66 short tons)[2][7]
  6. Dreadnoughtus schrani: 59.3 t (65.4 short tons)[15]
  7. Paralititan stromeri: 59 t (65 short tons)[11]
  8. Unnamed (MPM-PV-39): 58 t (64 short tons)[16]
  9. Brachiosaurus altithorax: 28.7–56.3 t (31.6–62.1 short tons)[17][18][19][40]
  10. Turiasaurus riodevensis: 40–50.9 t (44.1–56.1 short tons)[2][3][19]
  11. Puertasaurus reuili: 50 t (55 short tons)[2]
  12. Ruyangosaurus giganteus: 50 t (55 short tons)[2]
  13. Alamosaurus sanjuanensis: (comparable to Argentinosaurus and Puertasaurus)[37]
  14. Futalognkosaurus dukei: 38.1–50 t (42.0–55.1 short tons)[2][19]
  15. Camarasaurus supremus: 47 t (52 short tons)[18]
  16. Diplodocus hallorum: 30–42.5 t (33.1–46.8 short tons)[1][2][18]
  17. Supersaurus vivianae: 32–40.2 t (35.3–44.3 short tons)[1][5][18]
  18. Elaltitan lilloi: 42.9 t (47.3 short tons)[19]
  19. Tehuelchesaurus benitezii: 41.3 t (45.5 short tons)[19]
  20. Apatosaurus louisae: 18–41.3 t (19.8–45.5 short tons)[2][19][41][42]

Shortest sauropods[edit]

A list of all sauropods measuring 9 metres (30 ft) or less in length.

  1. Ohmdenosaurus liasicus: 4 m (13 ft)[4]
  2. Lirainosaurus astibiae: 4–6 m (13–20 ft)[43]
  3. Blikanasaurus cromptoni: 5 m (16 ft)[4]
  4. Magyarosaurus dacus: 6 m (20 ft)[2]
  5. Europasaurus holgeri: 6.2 m (20 ft)[4][44]
  6. Vulcanodon karibaensis: 6.5 m (21 ft)[4]
  7. Isanosaurus attavipachi: 6.5 m (21 ft)[45]
  8. Neuquensaurus australis: 7 m (23 ft)[46]
  9. Antetonitrus ingenipes: 8–10 m (26–33 ft)[47]
  10. Shunosaurus lii: 8.7–11 m (29–36 ft)[2][4][25][48]
  11. Zizhongosaurus chuanchengensis: 9 m (30 ft)[4]
  12. Algoasaurus bauri: 9 m (30 ft)[4][49]
  13. Kotasaurus yamanpalliensis: 9 m (30 ft)[4]
  14. Volkheimeria chubutensis: 9 m (30 ft)[4]
  15. Zapalasaurus bonapartei: 9 m (30 ft)[2]
  16. Tazoudasaurus naimi: 9–10 m (30–33 ft)[4][50]
  17. Nigersaurus taqueti: 9–14.1 m (30–46 ft)[2][51]

Lightest sauropods[edit]

Size by overall weight of all sauropods 5 t (5.5 short tons)onnes and under.

  1. Pleurocoelus nanus: 0.5 t (0.55 short ton)[19]
  2. Magyarosaurus dacus: 0.75 t (0.83 short ton)[19]
  3. Europasaurus holgeri: 0.8–1 t (0.88–1.10 short tons) [19][44]
  4. Bonatitan reigi: 1 t (1.1 short tons)[19]
  5. Lapparentosaurus madagascariensis: 1.4 t (1.5 short tons)[19]
  6. Lessemsaurus sauropoides: 1.8 t (2.0 short tons) [19]
  7. Lirainosaurus astibiae: 1.8–4 t (2.0–4.4 short tons) [19][43]
  8. Shunosaurus lii: 2.2–6.7 t (2.4–7.4 short tons) [19][25][51][52]
  9. Ampelosaurus atacis: 2.5 t (2.8 short tons)[19]
  10. Amargasaurus cazaui: 2.6–3.8 t (2.9–4.2 short tons) [12][52]
  11. Hypselosaurus priscus: 2.7–8 t (3.0–8.8 short tons) [53]
  12. Euhelopus zdanskyi: 3.4 t (3.7 short tons) [52]
  13. Neuquensaurus australis: 3.5–6.1 t (3.9–6.7 short tons) [19][44]
  14. Rinconsaurus caudamirus: 4.1 t (4.5 short tons)[19]
  15. Atacamatitan chilensis: 4.3 t (4.7 short tons)[19]
  16. Dicraeosaurus hansemanni 4.4–5 t (4.9–5.5 short tons) [25][52]

Ornithopods[edit]

Main article: Ornithopoda

Longest ornithopods[edit]

Size comparison of selected giant ornithopod dinosaurs

Size by overall length, including tail, of all ornithopods over 11 meters.

  1. Huaxiaosaurus aigahtens: 18.7 m (61 ft)[54]
  2. Shantungosaurus giganteus: 15–17 m (49–56 ft)[4][25][55]
  3. Hypsibema crassicauda: 15 m (49 ft)?[4]
  4. Hypsibema missouriensis (Parrosaurus):[4] 15 m (49 ft)?[4]
  5. Edmontosaurus regalis: 9–13 m (30–43 ft)[2][56][57]
  6. Iguanodon bernissartensis: 10–13 m (33–43 ft)[4][58]
  7. Magnapaulia laticaudus: 12.5 m (41 ft)[59]
  8. Edmontosaurus annectens (Anatosaurus): 9–12 m (30–39 ft)[2][4][60]
  9. Saurolophus angustirostris: 12 m (39 ft)[2][61]
  10. Ornithotarsus immanis: 12 m (39 ft)?[4]
  11. Kritosaurus sp.: 11 m (36 ft)[62]
  12. Brachylophosaurus canadensis: 8.5–11 m (28–36 ft)[2][4]

Heaviest ornithopods[edit]

Size by mass of all ornithopods over 5 tonnes.

  1. Shantungosaurus giganteus: 9.9–22.5 t (10.9–24.8 short tons)[2][19][25][52][63]
  2. Iguanodon seeleyi: 15 t (17 short tons)[19]
  3. Saurolophus angustirostris: 6.6–9 t (7.3–9.9 short tons)[2]
  4. Iguanodon bernissartensis: 8.3–8.6 t (9.1–9.5 short tons)[19][40]
  5. Edmontosaurus annectens (Anatotitan): 3.2–7.6 t (3.5–8.4 short tons)[19][25][52]
  6. Brachylophosaurus canadensis: 4.5–7 t (5.0–7.7 short tons)[2][19]
  7. Saurolophus osborni: 6.6 t (7.3 short tons)[19]
  8. Lanzhousaurus magnidens: 6 t (6.6 short tons)[2]
  9. Parasaurolophus walkeri: 3–5.1 t (3.3–5.6 short tons)[19][25][42]
  10. Charonosaurus jiayinensis: 5 t (5.5 short tons)[2]
  11. Barsboldia sicinskii: 5 t (5.5 short tons)[2]

Shortest ornithopods[edit]

Size by length of all ornithopods under 1.8 metres (5.9 ft) long.

  1. Gasparinisaura cincosaltensis: 0.65–1.7 m (2.1–5.6 ft)[2][4][25]
  2. Leaellynasaura amicagraphica: 0.9–3 m (3.0–9.8 ft)[2][4]
  3. Valdosaurus canaliculatus: 1.3 m (4.3 ft)[2]
  4. Notohypsilophodon comodorensis: 1.3 m (4.3 ft)[2]
  5. Fulgurotherium australe: 1.3–2 m (4.3–6.6 ft)[2][4]
  6. Siluosaurus zhangqiani: 1.4 m (4.6 ft)[4]
  7. Qantassaurus intrepidus: 1.4–2 m (4.6–6.6 ft)[2][4]
  8. Changchunsaurus parvus: 1.5 m (4.9 ft)[2]
  9. Thescelosaurus sp.: 1.5 m (4.9 ft)[25]
  10. Yandusaurus hongheensis: 1.5–3.8 m (4.9–12.5 ft)[2][4]
  11. Yueosaurus tiantaiensis: 1.8 m (5.9 ft)[4]
  12. Haya griva: 1.8 m (5.9 ft)[4]
  13. Hypsilophodon foxii: 1.8–2 m (5.9–6.6 ft)[2][4]

Lightest ornithopods[edit]

Size by mass of all ornithopods under 20 kg.

  1. Gasparinisaura cincosaltensis: 1–13 kg (2.2–28.7 lb)[2][19][25][31]
  2. Yueosaurus tiantaiensis: 3.9 kg (8.6 lb)[19]
  3. Fulgurotherium australe: 6 kg (13 lb)[2]
  4. Notohypsilophodon comodorensis: 6 kg (13 lb)[2]
  5. Yandusaurus hongheensis: 6.6–7.5 kg (15–17 lb)[25][52]
  6. Hypsilophodon foxii: 7–21 kg (15–46 lb)[2][25][52]
  7. Thescelosaurus sp.: 7.9–86 kg (17–190 lb)[25][52]
  8. Valdosaurus canaliculatus: 10 kg (22 lb)[2]
  9. Haya griva: 11 kg (24 lb)[19]
  10. Agilisaurus louderbacki: 12 kg (26 lb)[2]
  11. Drinker nisti: 20 kg (44 lb)[2]
  12. Changchunsaurus parvus: 20 kg (44 lb)[2]
  13. Qantassaurus intrepidus: 20 kg (44 lb)[2]
  14. Zephyrosaurus schaffi: 20 kg (44 lb)[2]
  15. Oryctodromeus cubicularis: 20 kg (44 lb)[2]
  16. Orodromeus makelai: 20 kg (44 lb)[19]

Ceratopsians[edit]

Main article: Ceratopsia

Longest ceratopsians[edit]

Size comparison of selected giant ceratopsian dinosaurs

Size by overall length, including tail, of all ceratopsians measuring 7 meters or more in length.

  1. Titanoceratops ouranos: 9 m (30 ft)[4]
  2. Eotriceratops xerinsularis: 8.5–9 m (28–30 ft)[2][4]
  3. Triceratops horridus: 8–9 m (26–30 ft)[2][4][25]
  4. Triceratops prorsus: 8–9 m (26–30 ft)[2][4]
  5. Torosaurus latus: 8–9 m (26–30 ft)[2][4]
  6. Ojoceratops fowleri: 8 m (26 ft)[4]
  7. Coahuilaceratops magnacuerna: 8 m (26 ft)[4]
  8. Pentaceratops sternbergii: 6.4–8 m (21–26 ft)[2][4][25]
  9. Pachyrhinosaurus canadensis: 6–8 m (20–26 ft)[2][4]
  10. Pachyrhinosaurus lakustai: 5–8 m (16–26 ft)[2][4]
  11. Nedoceratops hatcheri: 7.6 m (25 ft)[4]
  12. Utahceratops gettyi: 7 m (23 ft)[4]
  13. Sinoceratops zhuchengensis: 7 m (23 ft)[4]
  14. Mojoceratops perifania: 7 m (23 ft)[4]
  15. Chasmosaurus belli: 4.8–7 m (16–23 ft)[2][4]
  16. Vagaceratops irvinensis: 4.5–7 m (15–23 ft)[2][4]
  17. Arrhinoceratops brachyops: 4.5–7 m (15–23 ft)[2][4]
  18. Agujaceratops mariscalensis: 4.3–7 m (14–23 ft)[2][4]
  19. Chasmosaurus russelli: 4.3–7 m (14–23 ft)[2][4]

Heaviest ceratopsians[edit]

A list of all ceratopsians over 2 tonnes.

  1. Triceratops horridus: 5–14 t (5.5–15.4 short tons)[2][19][25][40]
  2. Triceratops prorsus: 6.5–11 t (7.2–12.1 short tons)[2][19][52]
  3. Titanoceratops ouranos: 6.5–11 t (7.2–12.1 short tons)[19][64][65]
  4. Eotriceratops xerinsularis: 10 t (11 short tons)[2]
  5. Pentaceratops sternbergii: 3–4.8 t (3.3–5.3 short tons)[2][25]
  6. Pachyrhinosaurus canadensis: 3–4.4 t (3.3–4.9 short tons)[2][19][42]
  7. Styracosaurus albertensis: 4.2 t (4.6 short tons)[19]
  8. Agujaceratops mariscalensis: 2.6 t (2.9 short tons)[19]
  9. Centrosaurus apertus: 1.1–2.5 t (1.2–2.8 short tons)[19][25]
  10. Coronosaurus brinkmani: 2 t (2.2 short tons)[2]
  11. Rubeosaurus ovatus: 2 t (2.2 short tons)[2]
  12. Achelousaurus horneri: 2 t (2.2 short tons)[2]
  13. Pachyrhinosaurus lakustai: 2 t (2.2 short tons)[2]
  14. Chasmosaurus belli: 2 t (2.2 short tons)[2]

Shortest ceratopsians[edit]

A list of all ceratopsians 100 centimetres (3.3 ft) or less in length.

  1. Yamaceratops dorngobiensis: 50–150 cm (1.6–4.9 ft)[2][4]
  2. Archaeoceratops yujingziensis: 55 cm (1.80 ft)[66]
  3. Graciliceratops mongoliensis: 60 cm (2.0 ft)[4]
  4. Microceratus gobiensis: 60 cm (2.0 ft)[4]
  5. Chaoyangsaurus youngi: 60–100 cm (2.0–3.3 ft)[2][4]
  6. Xuanhuaceratops niei: 60–100 cm (2.0–3.3 ft)[2][4]
  7. Archaeoceratops oshimai: 67–150 cm (2.20–4.92 ft)[2][4][66]
  8. Bagaceratops rozhdestvenskyi: 80–90 cm (2.6–3.0 ft)[2][4]
  9. Psittacosaurus lujiatunensis: 90 cm (3.0 ft)[2]
  10. Ajkaceratops kozmai: 100 cm (3.3 ft)[67]
  11. Psittacosaurus gobiensis: 100 cm (3.3 ft)[2][68]

Lightest ceratopsians[edit]

A list of all ceratopsians under 15 kg.

  1. Liaoceratops yanzigouensis: 2 kg (4.4 lb)[2]
  2. Yamaceratops dorngobiensis: 2 kg (4.4 lb)[2]
  3. Psittacosaurus sinensis: 4.1 kg (9.0 lb)[19]
  4. Psittacosaurus lujiatunensis: 5 kg (11 lb)[2]
  5. Yinlong downsi: 5.5 kg (12 lb)[19]
  6. Micropachycephalosaurus hongtuyanensis: 5.9 kg (13 lb)[19]
  7. Chaoyangsaurus youngi: 6 kg (13 lb)[2]
  8. Xuanhuaceratops niei: 6 kg (13 lb)[2]
  9. Psittacosaurus gobiensis: 6–9.4 kg (13–21 lb)[2][19]
  10. Bagaceratops rozhdestvenskyi: 7 kg (15 lb)[2]
  11. Psittacosaurus meileyingensis: 8 kg (18 lb)[2]
  12. Psittacosaurus neimongoliensis: 8–8.4 kg (18–19 lb)[2][19]
  13. Archaeoceratops oshimai: 10 kg (22 lb)[2]
  14. Psittacosaurus mongoliensis: 12.1–20 kg (27–44 lb)[2][25][69]
  15. Psittacosaurus houi (Hongshanosaurus): 15 kg (33 lb)[2]
  16. Psittacosaurus sibiricus: 15 kg (33 lb)[2]

Pachycephalosaurs[edit]

Main article: Pachycephalosauria

Longest pachycephalosaurs[edit]

Size comparison of an adult P. wyomingensis (green), potential growth stages, and a human

Size by overall length, including tail, of all pachycephalosaurs measuring 3 meters or more in length.

  1. Pachycephalosaurus wyomingensis: 4.5–7 m (15–23 ft)[2][4]
  2. Stygimoloch spinifer: 3 m (9.8 ft)[4]
  3. Gravitholus albertae: 3 m (9.8 ft)?[4]

Shortest pachycephalosaurs[edit]

Size by overall length, including tail, of all pachycephalosaurs measuring 2 meters or less in length as adults.

  1. Colepiocephale lambei: 1.8 m (5.9 ft)[4]
  2. Stegoceras validum: 2 m (6.6 ft)[4]
  3. Texacephale langstoni: 2 m (6.6 ft)[4]

Thyreophorans[edit]

Main article: Thyreophora

Longest thyreophorans[edit]

Estimated size of Ankylosaurus compared to a human.
Size of Stegosaurus armatus compared to a human

Size by overall length, including tail, of all thyreophorans measuring 7 meters or more in length.

  1. Cedarpelta bilbeyhallorum: 7–9 m (23–30 ft)[2][4]
  2. Stegosaurus ungulatus: 7–9 m (23–30 ft)[2][4]
  3. Stegosaurus stenops: 6.5–9 m (21–30 ft)[2][4]
  4. Ankylosaurus magniventris: 6.25–9 m (20.5–29.5 ft)[4][70]
  5. Dacentrurus armatus: 7–8 m (23–26 ft)[2][4][71]
  6. Tarchia gigantea: 4.5–8 m (15–26 ft)[2][4]
  7. Sauropelta edwardsorum: 5–7.6 m (16–25 ft)[4][72]
  8. Dyoplosaurus acutosquameus: 7 m (23 ft)?[4]
  9. Tuojiangosaurus multispinus: 6.5–7 m (21–23 ft)[2][4][25]
  10. Wuerhosaurus homheni: 6.1–7 m (20–23 ft)[2][4]
  11. Edmontonia rugosidens: 6–7 m (20–23 ft)[2][4]
  12. Edmontonia longiceps: 6–7 m (20–23 ft)[2][4]
  13. Edmontonia schlessmani: 6–7 m (20–23 ft)[2][4]
  14. Jiangjunosaurus junggarensis: 6–7 m (20–23 ft)[2][4]
  15. Euoplocephalus tutus: 5.5–7 m (18–23 ft)[2][4]
  16. Saichania chulsanensis: 5.2–7 m (17–23 ft)[2][4][25]
  17. Panoplosaurus mirus: 5–7 m (16–23 ft)[2][4]
  18. Shamosaurus scutatus: 5–7 m (16–23 ft)[2][4]
  19. Gigantspinosaurus sichuanensis: 4.2–7 m (14–23 ft)[2][4]
  20. Tsagantegia longicranialis: 3.5–7 m (11–23 ft)[2][4]

Heaviest thyreophorans[edit]

All thyreophorans over 2.5 tonnes

  1. Dacentrurus armatus: 5–7.4 t (5.5–8.2 short tons)[2][19]
  2. Ankylosaurus magniventris: 1.7–6 t (1.9–6.6 short tons)[2][19][25]
  3. Stegosaurus stenops: 2.6–5.3 t (2.9–5.8 short tons)[2][18][25][42]
  4. Cedarpelta bilbeyhallorum: 5 t (5.5 short tons)[2]
  5. Hesperosaurus mjosi: 3.5–5 t (3.9–5.5 short tons)[2][18][19][40]
  6. Tuojiangosaurus multispinus: 4.8 t (5.3 short tons)[19]
  7. Wuerhosaurus homheni: 4 t (4.4 short tons)[2]
  8. Niobrarasaurus coleii: 4 t (4.4 short tons)[2]
  9. Stegosaurus ungulatus: 3.5 t (3.9 short tons)[2]
  10. Gobisaurus domoculus: 3.5 t (3.9 short tons)[2]
  11. Nodosaurus textilis: 3.5 t (3.9 short tons)[2]
  12. Palaeoscincus costatus: 3.5 t (3.9 short tons)[73]
  13. Sauropelta edwardsi: 3 t (3.3 short tons)[19]
  14. Edmontonia rugosidens: 3 t (3.3 short tons)[2]
  15. Edmontonia schlessmani: 3 t (3.3 short tons)[2]
  16. Edmontonia longiceps: 2.3–3 t (2.5–3.3 short tons)[2][19]
  17. Tuojiangosaurus multispinus: 2.8 t (3.1 short tons)[2]
  18. Euoplocephalus tutus: 2–2.7 t (2.2–3.0 short tons)[2][19][25][42]
  19. Jiangjunosaurus junggarensis: 2.5 t (2.8 short tons)[2]

Shortest thyreophorans[edit]

All thyreophorans 2 metres or under in length.

  1. Propanoplosaurus marylandicus: 0.6 m (2.0 ft)[4]
  2. Tatisaurus oehleri: 1.2 m (3.9 ft)[4]
  3. Scutellosaurus lawleri: 1.2–1.3 m (3.9–4.3 ft)[2][4]
  4. Dracopelta zbyszewskii: 2 m (6.6 ft)[4]
  5. Minmi paravertebra: 2–3 m (6.6–9.8 ft)[2][4]

Lightest thyreophorans[edit]

All thyreophorans 300 kg or lighter.

  1. Scutellosaurus lawleri: 3 kg (6.6 lb)[2]
  2. Emausaurus ernsti: 50 kg (110 lb)[2]
  3. Scelidosaurus harrisonii: 64.5–270 kg (142–595 lb)[2][25]
  4. Animantarx ramaljonesi: 300 kg (660 lb)[2]
  5. Struthiosaurus transylvanicus: 300 kg (660 lb)[2]
  6. Struthiosaurus austriacus: 300 kg (660 lb)[2]
  7. Gargoyleosaurus parkpinorum: 300 kg (660 lb)[2]
  8. Mymoorapelta maysi: 300 kg (660 lb)[2]
  9. Minmi paravertebra: 300 kg (660 lb)[2]

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