高棘龙分类不明,大多数研究者倾向于鲨齿龙科,其他人则倾向于异特龙科。2011年,史蒂芬·布鲁萨特(Stephen L. Brusatte)、罗格·本森(Roger B. J. Benson)和徐星对克拉玛依龙进行重新描述,发现它是鲨齿龙科的有效属。一项关于坚尾龙类的系统发育分析将其作为基干鲨齿龙科与始鲨齿龙和由更衍生鲨齿龙科构成的演化支一起置于一个三分支(英语:Polytomy)中。[1]巴哈利亚龙也被认为是种鲨齿龙科,但因化石稀少而无法确定。
^ 3.03.1Novas, Fernando E. Evolution of the carnivorous dinosaurs during the Cretaceous: The evidence from Patagonia. Cretaceous Research. 2013, 45: 174–215. doi:10.1016/j.cretres.2013.04.001.
^Hendrickx, Christophe; Hartman, Scott A.; Mateus, Octávio. An Overview of Non-Avian Theropod Discoveries and Classification. PalArch's Journal of Vertebrate Palaeontology. 2015, 12 (1): 1–73.
^Novas, Fernando E.; de Valais, Silvina; Vickers-Rich, Patrick; Rich, Tom. A large Cretaceous theropod from Patagonia, Argentina, and the evolution of carcharodontosaurids. Naturwissenschaften. 2005, 92: 226–230. doi:10.1007/s00114-005-0623-3.
^Rodrigo P. Fernandes de Azevedo; Felipe Medeiros Simbras; Miguel Rodrigues Furtado; Carlos Roberto A. Candeiro & Lílian Paglarelli Bergqvist. First Brazilian carcharodontosaurid and other new theropod dinosaur fossils from the Campanian–Maastrichtian Presidente Prudente Formation, São Paulo State, southeastern Brazil. Cretaceous Research. 2013, 40: 131–142. doi:10.1016/j.cretres.2012.06.004.
^Carlos Roberto Candeiro; Philip Currie; Lílian Bergqvist. Theropod teeth from the Marília Formation (late Maastrichtian) at the Paleontological Site of Peirópolis in Minas Gerais State, Brazil. Revista Brasileira de Geociências. 2012, 42 (2): 323–330. doi:10.5327/z0375-75362012000200008.
^Delcourt, R.; Grillo, O.N. Carcharodontosaurids remained extinct in the Campanian-Maastrichtian: Reassessment of a fragmentary maxilla from Presidente Prudente Formation, Brazil. Cretaceous Research. 2017, 84: 515–524. doi:10.1016/j.cretres.2017.09.008.
^Coria, R.A.; Currie, P.J. A new carcharodontosaurid (Dinosauria, Theropoda) from the Upper Cretaceous of Argentina. Geodiversitas. 2006, 28 (1): 71–118.