A scale diagram of the Sauroposeidon proteles holotype, OMNH 53062, showing the four known vertebrae and their approximate position in the neck. 

• Sauroposeidon was described in 2000 as fragmentary, but very large brachiosaur. The holotype specimen (OMNH 53062) was four neck vertebrae (thought to represent the 5th to 8th neck vertebrae). The vertebrae are notable for being very long (the largest has a total length of 1.4 m). The complete neck has been estimated between 11.25–12 m. If Sauroposeidon could hold its neck vertically, it might have reached 17 or 18 m in height.[1][2] A 2012 study assigned additional sauropod remains to Sauroposeidon, including material described initially as Paluxysaurus jonesi and other unnamed sauropod material from the Cloverly Formation, shared similarities with Sauroposeidon. The study also found them to be basal somphospondylans as opposed to brachiosaurs.[3]
• The Sauroposeidon silhouette is based proportionally on a Paluxysaurus skeletal reconstruction by the author (Stephen O'Connor).[4] The vertebrae are based on photographs and drawings in Wedel 2005 (Figure 9).[1] Due to the incompleteness of the remains there is some uncertainty as to the exact proportions of 'Sauroposeidon'. [5]
• The humans are scaled to 170 cm (5 ft 7 in) and 160 cm (5 ft 3 in).
• Each grid segment represents 1 square meter.References

↑ a b Wedel, Mathew J.; Cifelli, Richard L. (Summer 2005). "Sauroposeidon: Oklahoma's Native Giant" (PDF). Oklahoma Geology Notes 65 (2): 40–57.

↑ Wedel, Mathew J.; Cifelli, Richard L.; Sanders, R. Kent (March 2000). "Sauroposeidon proteles, a new sauropod from the Early Cretaceous of Oklahoma" (PDF). Journal of Vertebrate Paleontology 29 (1): 109–114. DOI:[0109:SPANSF2.0.CO;2 10.1671/0272-4634(2000)020[0109:SPANSF]2.0.CO;2].

↑  (2012). "The beginning of the sauropod dinosaur hiatus in North America: insights from the Lower Cretaceous Cloverly Formation of Wyoming". Journal of Vertebrate Paleontology 32 (4): 883–902. DOI:10.1080/02724634.2012.671204.

↑ Paluxysaurus Skeletal reconstruction by Stephen O'Connor. DeviantArt.

↑ Mike Taylor (7 August 2007). How tallweird was Sauroposeidon?. svpow. Retrieved on 20 November 2017.
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