Amargasaurus: Your Dinosaurs Are Wrong #25

https://www.patreon.com/YDAW -- It seems like a weird creature compared to what is thought of as the 'standard' sauropod due to its spines. But when we consider it comes from a group of short-necked low-browsers, Amargasaurus makes a lot more sense! Check out our merch on Etsy: https://ydawtheshop.etsy.com For more updates and paleo-related fun, follow us: Twitter: https://twitter.com/YDAWtheShow Facebook: https://www.facebook.com/YDAWtheShow Instagram: https://www.instagram.com/yourdinosaursarewrong/ … Discord: https://discord.gg/B72YH6u Ko-fi: https://ko-fi.com/ydawtheshow - Contents: 0:00 Opening 1:23 Overview 5:50 Arms & Legs 7:27 Body & Tail 12:41 Head 16:37 Neck & Neck Spines 28:09 Conclusion Sources & Links: Salgado, L. & Bonaparte, J. F. Un nuevo sauropod dicraeosauridae, Amargasaurus cazaui gen. et sp. nov., de la formacion La Amarga, neocomiano de la provincia del Nequen, Argentina Ameghiniana 28, n. 3-4, p. 333-346 1991 http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/2063 Melbourne Amargasaurus Mount Photo by Sainterx Public Domain https://commons.wikimedia.org/wiki/File:Dino_amargasaurus.jpg Czerkas, S. A. Discovery of dermal spines reveals a new look for sauropod dinosaurs Geology 20 (12): 1068–1070 1992 https://doi.org/10.1130/0091-7613(1992)020%3C1068:DODSRA%3E2.3.CO;2 Stevens, K. A. & Parrish, J. M. Neck posture, dentition, and feeding strategies in Jurassic sauropod dinosaurs 2005 https://core.ac.uk/download/pdf/20662953.pdf Vidal, D., Mocho, P., Aberasturi, A., Sanz, J. L., & Ortega, F. High browsing skeletal adaptations in Spinophorosaurus reveal an evolutionary innovation in sauropod dinosaurs Sci Rep 10, 6638 2020 https://doi.org/10.1038/s41598-020-63439-0 Gallina, P.A., Apesteguía, S., Canale, J. I., & Haluza, A. A new long-spined dinosaur from Patagonia sheds light on sauropod defense system. Sci Rep 9, 1392 2019 https://doi.org/10.1038/s41598-018-37943-3 Witmer, L. M. Nostril Position in Dinosaurs and Other Vertebrates and Its Significance for Nasal Function Vol. 293, Issue 5531, pp. 850-853 2001 https://doi.org/10.1126/science.1062681 Carabajal, A. P., Carballido, J. L., & Currie, P. J. Braincase, neuroanatomy, and neck posture of Amargasaurus cazaui (Sauropoda, Dicraeosauridae) and its implications for understanding head posture in sauropods Journal of Vertebrate Paleontology, 34:4, 870-882 2014 https://doi.org/10.1080/02724634.2014.838174 Taylor, M. P., Wedel, M. J., & Naish, D. Head and neck posture in sauropod dinosaurs inferred from extant animals. Acta Palaeontologica Polonica 54(2): 213-220. 2009 http://www.app.pan.pl/archive/published/app54/app54-213.pdf "Jose Bonaparte: Master of the Mesozoic" by Don Lessem Omni, May 1993 Schwarz, D., Frey, E., & Meyer, C. A. Pneumaticity and soft-tissue reconstructions in the neck of diplodocid and dicraeosaurid sauropods Acta Palaeontologica Polonica 52 (1), 2007: 167-188 2007 https://www.app.pan.pl/article/item/app52-167.html Woodruff, D. C. Nuchal ligament reconstructions in diplodocid sauropods support horizontal neck feeding postures Historical Biology, 29:3, 308-319 2017 https://doi.org/10.1080/08912963.2016.1158257 Ankole-Watusi Photo Ruben van Kuik CC BY-SA 4.0 https://commons.wikimedia.org/wiki/File:An_Ankole-Watusi_at_Artis_Zoo.jpg Woodruff, D. C. The anatomy of the bifurcated neural spine and its occurence within Tetrapoda Journal of Morphology, 275: 1053-1065 2014 https://doi.org/10.1002/jmor.20283 Paul, G. S. Dinosaur art & restoration notes: Dicraeosaurs The Dinosaur Report 8 1994 http://www.gspauldino.com/DinoArtDicraeosaurs.pdf Bailey, J. B. Neural spine elongation in dinosaurs: Sailbacks or buffalo-backs? Journal of Paleontology, 71(6), 1124-1146 1997 https://doi.org/10.1017/S0022336000036076 Rega, E. A., Noriega, K., Sumida, S. S., Huttenlocker, A., Lee, A., & Kennedy, B. Healed Fractures in the Neural Spines of an Associated Skeleton of Dimetrodon: Implications for Dorsal Sail Morphology and Function. Fieldiana Life and Earth Sciences 2012(5), 104-111 2012 https://doi.org/10.3158/2158-5520-5.1.104 Alpine ibex Photo Nino Barbieri CC BY-SA 3.0 https://commons.wikimedia.org/wiki/File:Capra_ibex_ibex_%E2%80%93_01.jpg Brown, C. M. An exceptionally preserved armored dinosaur reveals the morphology and allometry of osteoderms and their horny epidermal coverings. PeerJ 5:e4066 2017 https://doi.org/10.7717/peerj.4066 Coria, R. A., Windholz, G. J., Ortega, F., & Currie, P. J. A new dicraeosaurid sauropod from the Lower Cretaceous (Mulichinco Formation, Valanginian, Neuquén Basin) of Argentina. Cretaceous Research Volume 93, Pages 33-48 2019 https://doi.org/10.1016/j.cretres.2018.08.019 - If you'd like to send us mail, you can post it to our address here: Your Dinosaurs Are Wrong Attn: Steven Bellettini 1765 3 Mile Rd. NE #150248 Grand Rapids, MI 49505 'YDAW' is a series that makes paleontology accessible to the general public using familiar (but wrong) dinosaur toys.