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File:Parksosaurids-Scale-Comparison-SVG-001.svg

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Summary

Description
English: A scale diagram comparing three parksosaurid dinsosaur genera, Orodromeus, Parksosaurus and Thescelosaurus to a Human.
• Parksosaurus silhouette is based on File:Parksosaurus Steveoc86.jpg, which is based proportionally on a reconstruction in[1] scaled to a femur length of 270mm.[2]
• Orodromeus silhouette is based on a skeletal reconstruction by Scott Hartman, used with permission.[1] Scaled based on data in Scheetz 1999.[3]
• Thescelosaurus silhouette is based on a skeletal by Genya Masukawa, used with permission. Silhouettes were scaled using the scale bars provided.[2]
• The feathery outlines are speculative but based loosely on related dinosaurs. In 2009 the Heterodontosaur Tianyulong was described, which shows filamentous quill-like structures along its back and underside.[4] In 2014, Kulindadromeus was described and showed a mix of feather-like structures and scales.[5]
• Humans 170 cm and 160 cm, respectively.

References

  1. ↑ Paul, G.S. , ed. (2000) The Scientific American Book of Dinosaurs, St. Martin's Press ISBN: 0-312-26226-4.
  2. ↑ Galton, Peter M. (1974). "Notes on Thescelosaurus, a conservative ornithopod dinosaur from the Upper Cretaceous of North America, with comments on ornithopod classification". Journal of Paleontology 48 (5): 1048–1067.
  3. ↑ Scheetz, R.D., 1999, Osteology of Orodromeus makelai and the phylogeny of basal ornithopod dinosaurs D. Ph. Thesis in Biology, Montana State University, Bozeman, 189 pp
  4. ↑ Zheng, Xiao-Ting (19 March 2009). "An Early Cretaceous heterodontosaurid dinosaur with filamentous integumentary structures". Nature 458 (7236): 333–336. DOI:10.1038/nature07856. PMID 19295609.
  5. ↑ Godefroit, P., Sinitsa, S.M., Dhouailly, D., Bolotsky, Y.L., Sizov, A.V., McNamara, M.E., Benton, M.J., and Spagna, P. 2014. "A Jurassic ornithischian dinosaur from Siberia with both feathers and scales." Science, 345(6195): 451-455. Published 25 Jul 2014. doi:10.1126/science.1253351
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Author Steveoc 86
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current10:15, 5 December 20181,280 × 426 (427 KB)Steveoc 86Add Scalebar

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