焚躯龙属于梁龙科中的梁龙亚科,该亚科包含与梁龙类似度高于雷龙的蜥脚类。梁龙亚科体型多样,其中包括某些已知最长的恐龙,如超龙长达35—40米(115—131英尺)。[5][6][7]相反,其中某些体型要小得多,如阿根廷的末梁龙长约9米(30英尺)。[8]一根焚躯龙背肋被组织切片以确定其生长模式。研究显示,该标本属于一具22岁左右的完全成熟个体,在13岁左右达到性成熟、17岁左右达到骨骼成熟。标本成熟度由EFS(外基础系统,英文:External fundamental system)的存在所指示,EFS是一条组织带,仅在老年动物骨生长减慢时才会发育。[9]焚躯龙股骨虽不完整,但估计其长约130厘米(51英寸),胫骨则长91.5厘米(36.0英寸)。[2]发育不成熟的帕氏需盔龙正模标本,骨骼尺寸与之相仿,包括116厘米(46英寸)长的股骨及84.5厘米(33.3英寸)长的胫骨。[10]估计帕氏需盔龙亚成体正模标本长18.2米(60英尺)。[11]
^Woodruff, D. Cary; Curtice, Brian D.; Foster, John R. Seis-ing up the Super-Morrison formation sauropods. Journal of Anatomy. 2024-07-08. doi:10.1111/joa.14108.
^Gallina, Pablo A.; Apesteguía, Sebastián; Carballido, José L.; Garderes, Juan P. Southernmost spiny backs and whiplash tails: Flagellicaudatans from South America. Otero, Alejandro; Carballido, José L.; Pol, Diego (编). South American Sauropodomorph Dinosaurs. Springer International Publishing. 2022: 209–236. ISBN 978-3-030-95958-6.
^Calderón, Teresa. Local growth patterns in tibia associate with restricted external fundamental system in Cervus elaphus. Implications for life history strategies in fossil groups. Historical Biology. 2024-01-02, 36 (2): 285–292. ISSN 0891-2963. doi:10.1080/08912963.2022.2162394(英语).
^Molina-Pérez, Rubén; Larramendi, Asier. Dinosaur Facts and Figures: The Sauropods and Other Sauropodomorphs. New Jersey: Princeton University Press. 2020: 257. ISBN 978-0-691-19069-3.
^Trujillo, K.C.; Chamberlain, K.R.; Strickland, A. Oxfordian U/Pb ages from SHRIMP analysis for the Upper Jurassic Morrison Formation of southeastern Wyoming with implications for biostratigraphic correlations. Geological Society of America Abstracts with Programs. 2006, 38 (6): 7.
^Bilbey, S.A. Cleveland-Lloyd Dinosaur Quarry – age, stratigraphy and depositional environments. Carpenter, K.; Chure, D.; Kirkland, J.I. (编). The Morrison Formation: An Interdisciplinary Study. Modern Geology 22. Taylor and Francis Group. 1998: 87–120. ISSN 0026-7775.
^Mateus, Octávio. Jurassic dinosaurs from the Morrison Formation (USA), the Lourinhã and Alcobaça Formations (Portugal), and the Tendaguru Beds (Tanzania): A comparison. Foster, John R.; Lucas, Spencer G. (编). Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin, 36. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. 2006: 223–231.
^ 17.017.117.2Maidment, Susannah C. R. Diversity through time and space in the Upper Jurassic Morrison Formation, western U.S.A.. Journal of Vertebrate Paleontology. 2023-04-01, 43 (5). ISSN 0272-4634. doi:10.1080/02724634.2024.2326027(英语).
^ 18.018.1Chure, Daniel J.; Litwin, Ron; Hasiotis, Stephen T.; Evanoff, Emmett; Carpenter, Kenneth. The fauna and flora of the Morrison Formation: 2006. Foster, John R.; Lucas, Spencer G. (编). Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin, 36. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. 2006: 233–249.
^Galton, Peter M.; Carpenter, Kenneth. The plated dinosaur Stegosaurus longispinus Gilmore, 1914 (Dinosauria: Ornithischia; Upper Jurassic, western USA), type species of Alcovasaurus n. gen.. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 5 February 2016, 279 (2): 185–208. doi:10.1127/njgpa/2016/0551.
^Carpenter, Kenneth. Biggest of the big: a critical re-evaluation of the mega-sauropod Amphicoelias fragillimus. Foster, John R.; Lucas, Spencer G. (编). Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin, 36. Albuquerque, New Mexico: New Mexico Museum of Natural History and Science. 2006: 131–138.