File:Dicraeosauridae Scale.svg

English: Size comparison of the most complete members of the sauropod family Dicraeosauridae.

• Lingwulong shenqi (violet): A very large dicraeosaurid from the Jurassic of China. Drawn and scaled based on the skeletal diagram in Xu et. al. (2018),^[1] with the skull based on that of Bajadasaurus in Gallina et. al. (2019).^[2]
• Suuwassea emilieae (blue): A large dicraeosaurid from the Jurassic of North America. Drawn and scaled based on a skeletal diagram by myself.
• Amargasaurus cazaui (green): An average-sized dicraeosaur with elaborate neck spines from the Cretaceous of South America. The presacral column was drawn primarily following Windholz et al. (2022),^[3] with additional information from Salgado & Bonaparte (1991)^[4] and Schwarz et al. (2007).^[5] The limbs were based on the figures and measurements of Salgado & Bonaparte (1991).^[4] The skull is based on that of Bajadasaurus in Gallina et. al. (2019)^[2] while the tail was restored based on Dicraeosaurus.
• Dicraeosaurus sattleri (red) and D. hansemanni (brown): Two large dicraeosaurs from the Jurassic of Africa. Drawn and scaled based on skeletal diagrams by myself (D. sattleri & D. hansemanni).
• Brachytrachelopan mesai (orange): A small dicraeosaurid from South America that lived during the Jurassic. Drawn and scaled based on a skeletal diagram by myself.
• All lengths are within one meter of those given by Paul (2016),^[6] with the exception of Lingwulong, which was unknown to him at the time.

Human silhouette from File:Silhouette of man standing and facing forward.svg (CC0)

1. ↑ Xu, Xing; Upchurch, Paul; Mannion, Philip D.; Barrett, Pal M.; Regalado-Fernandez, Omar R.; Mo, Jinyou; Ma, Jinfu; Liu, Hongan (2018). "A new Middle Jurassic diplodocoid suggests an earlier dispersal and diversification of sauropod dinosaurs". Nature Communications 9: Article number 2700. DOI:10.1038/s41467-018-05128-1.
2. ↑ ^{a b} Gallina, P. A.; Apesteguía, S.; Canale, J.I.; Haluza, A. (2019). "A new long-spined dinosaur from Patagonia sheds light on sauropod defense system". Scientific Reports 9: 1392. DOI:10.1038/s41598-018-37943-3.
3. ↑ Windholz, G.J.; Coria, R.A.; Bellardini, F.; Baiano, M.A.; Pino, D.; Ortega, F.; Currie, P.J.. "On a dicraeosaurid specimen from the Mulichinco Formation (Valanginian, Neuquén Basin) of Argentina and phylogenetic relationships of the South American dicraeosaurids (Sauropoda, Diplodocoidea)". Comptes Rendus Palevol 21 (45): 991–1019.
4. ↑ ^{a b} Salgado, L.; Bonaparte, J.F. (1991). "Un nuevo sauropodo Dicraeosauridae, Amargasaurus cazaui gen. et sp. nov., de la Formacion La Amarga, Neocomiano de la Provincia del Neuquén, Argentina". Ameghiniana 28 (3-4): 333–346. Archived from the original on 2015-12-22. Retrieved on 2022-12-27. Translation from the Polyglot Paleontologist, done by Harris, J.D; Lamanna, M.C., January 2003.
5. ↑ Schwarz, D.; Frey, E.; Meyer, C.A. (2007). "Pneumaticity and soft−tissue reconstructions in the neck of diplodocid and dicraeosaurid sauropods". Acta Palaeontologica Polonica 52 (1): 167–188.
6. ↑ Paul, Gregory S. The Princeton Field Guide to Dinosaurs. 2nd ed. Princeton, NJ: Princeton UP, 2016. Print.