Bugge J
Acta Anat (Basel). 1979;105(1):37-46. doi: 10.1159/000145104.
The cephalic arterial pattern in edentates and pangolins is described on the basis of 9 corrosion specimens, representing all the classical superfamilies, with special reference to their phylogenetic relationship and taxonomy. In this respect, the importance of the manner in which the external carotid artery system annexes the stepedial area of supply and of the course of the internal carotid artery in relation to the tympanic cavity is emphasized. The investigation does not indicate any special relationship between the New World edentates and the Old World pangolins, whereas the marked difference in the course of the internal carotid artery in recent edentates stresses the independent development of the South American anteaters compared with that of the two other edentate groups (armadillos and tree sloths). Most probably the edentates were divided very early into two main lines which have evolved independently since the early Tertiary, i.e. one for the anteaters and one for the tree sloths and armadillos, indicating a probable subdivision of the true edentates into two suborders. This subdivision is markedly different from the classical two-fold division of the edentates.
基于9个腐蚀标本（代表所有经典超科），特别参照其系统发育关系和分类学，描述了贫齿目动物和穿山甲的头部动脉模式。在这方面，强调了颈外动脉系统连接供应阶梯区的方式以及颈内动脉相对于鼓室的走行的重要性。研究未表明新大陆贫齿目动物与旧大陆穿山甲之间存在任何特殊关系，而近代贫齿目动物颈内动脉走行的显著差异强调了南美食蚁兽与其他两个贫齿目动物类群（犰狳和树懒）相比的独立演化。很可能贫齿目动物很早就分为两条主线，自第三纪早期以来它们独立演化，即一条是食蚁兽的，一条是树懒和犰狳的，这表明真正的贫齿目动物可能分为两个亚目。这种细分与贫齿目动物经典的二分法明显不同。
