副正体龙属查看源代码讨论查看历史
副正体龙属(学名:Paratypothorax)是坚蜥目的一属,是在1985年根据鳞甲化石而叙述、命名,曾经被归类于箭齿龙的一种。
化石发现于德国的Stubensandstein地层下层、以及美国的Dockum组、钦尔组(Chinle Formation),地质年代为诺利阶与雷蒂亚阶[1][2]。在格陵兰Flemming Fjord地层发现的化石,也被编入于副正体龙,地质年代为诺利阶。
副正体龙的背部中央有带状的宽鳞甲,表面有沟痕、凹处。副正体龙的身体两侧鳞甲呈角状,往后侧向延伸,类似正体龙亚科的正体龙。每块鳞甲的后方有明显的突出部,与后方鳞甲重叠[3]。
目录
参考文献
- ↑ Long, R. A.; and Ballew, K. L. Aetosaur dermal armor from the Late Triassic of southwestern North America, with special reference to material from the Chinle Formation of Petrified Forest National Park. Museum of Northern Arizona Bulletin. 1985, 47: 45–68.
- ↑ Hunt, A. P.; and Lucas, S. G. The first occurrence of the aetosaur Paratypothorax andressi (Reptilia:Aetosauria) in the western United States and its biochronological significance. Paläontologische Zëitschrift. 1992, 66: 147–157.
- ↑ Heckert, A. B.; and Lucas, S. G. A new aetosaur (Reptilia: Archosauria) from the Upper Triassic of Texas and the phylogeny of aetosaurs. Journal of Vertebrate Paleontology. 1999, 19 (1): 50–68.