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English: A size comparison of Saurolophus osborni, Saurolophus angustirostris and a human.


•Saurolophus osborni is based on AMNH 5220, an incredibly complete, mostly articulated specimen measuring about 8.5 m in length.[1][2] This specimen has a skull measuring 1 m in length measured from the Premaxila to the Quadrate.[3][1] There are currently three definitive specimens of S.osborni.[1]
•Saurolophus angustirostris is one of the largest hadrosaurs known measuring about 12-13 m in length.[4][2] The skull shown here is based on PIN 551/357, which is the largest known skull of S.angustirostris measuring 1.22 m in length measured from the Premxila to the Quadrate. The second largest skull is MPC 100/706 measuring 1.2 m.[1] S.angustirostris is known from multiple specimens.[1]
•S.angustirostris is known to have supported small rectangular spines running along the top of the back, known as 'Midline Feature Scales'. Other hadrosaurs are known to have had these, such as Brachylophosaurus Edmontosaurus and Gryposaurus, it is possible S.osborni had them as well but are not currently preserved.[5][6]
• The humans are scaled to 170 cm (5 ft 7 in) and 160 cm (5 ft 3 in), respectively.

References

  1. ↑ a b c d e (2011). "Cranial Osteology and Ontogeny of Saurolophus angustirostrisfrom the Late Cretaceous of Mongolia with Comments on Saurolophus osborni from Canada". Acta Palaeontologica Polonica 56 (4): 703–722. DOI:10.4202/app.2010.0061.
  2. ↑ a b Paul, G.S. (2016). The Princeton Field Guide to Dinosaurs Second Edition, Princeton University Press.
  3. ↑ Brown, Barnum (1912). "A crested dinosaur from the Edmonton Cretaceous". Bulletin of the American Museum of Natural History 31 (14): 131–136. Retrieved on 2007-04-29.
  4. ↑ Paul, G.S. (2010). The Princeton Field Guide to Dinosaurs, Princeton University Press.
  5. ↑ (2012). "Standardized Terminology and Potential Taxonomic Utility for Hadrosaurid Skin Impressions: A Case Study for Saurolophus from Canada and Mongolia". PLoS ONE 7 (2): e31295. DOI:10.1371/journal.pone.0031295. PMID 22319623. PMC: 3272031.
  6. ↑ (2014). "A review of Hadrosaurid skin impressions". The Hadrosaurs; proceedings of the international hadrosaur symposium.
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Date/TimeThumbnailDimensionsUserComment
current21:40, 6 January 2019Thumbnail for version as of 21:40, 6 January 20191,280 × 640 (160 KB)Steveoc 86Minor adjustments
22:45, 1 May 2018Thumbnail for version as of 22:45, 1 May 20181,280 × 640 (159 KB)Steveoc 86Standardise, Average Human Heights.
11:17, 2 October 2017Thumbnail for version as of 11:17, 2 October 20171,280 × 640 (187 KB)Steveoc 86Correct Scale.
23:23, 1 October 2017Thumbnail for version as of 23:23, 1 October 20171,280 × 640 (184 KB)Steveoc 86Specimen-specific Skull. 'PIN 551/357' The largest known Saurolophus angustirostris skull.
23:07, 30 September 2017Thumbnail for version as of 23:07, 30 September 20171,280 × 640 (192 KB)Steveoc 86Fix Box Issue
18:20, 30 September 2017Thumbnail for version as of 18:20, 30 September 20171,280 × 640 (192 KB)Steveoc 86User created page with UploadWizard

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