Willnow I, Willnow R
Acta Anat (Basel). 1976;94(4):504-19.
After a critical review of the literature, the authors describe the structure of the lung of Sphenodon, dealing with form, arteries, veins, and septation. The external form, circulatory pattern, degree of complication, height of the septa, vascular structure, and decrease in complication (?) are discussed from the standpoint of comparative anatomy. In an attempt to explain the unusual findings, the capacity for development of the central and subpleural type of differentiation is compared and contrasted. Obvious relations between the unusual lung structure and the phylogenetic age of the Sphenodon were sought, with the conclusion that the Sphenodon cannot be included in the Reptilian oders since its physical structure forms a class by itself.
在对文献进行批判性综述后，作者描述了楔齿蜥肺部的结构，涉及形态、动脉、静脉和隔膜。从比较解剖学的角度讨论了其外部形态、循环模式、复杂程度、隔膜高度、血管结构以及复杂程度的降低（？）。为了解释这些异常发现，对中央型和胸膜下型分化的发育能力进行了比较和对比。研究了楔齿蜥异常肺部结构与系统发育年龄之间的明显关系，得出的结论是，楔齿蜥不能归入爬行纲目，因为其身体结构自成一类。
