Slack J M, Holland P W, Graham C F
Department of Zoology, University of Oxford, UK.
Nature. 1993 Feb 11;361(6412):490-2. doi: 10.1038/361490a0.
What is it that defines an animal? The definition provided here, made on the basis of developmental biology, suggests methods for resolving phylogenetic problems.
是什么定义了一种动物?这里基于发育生物学给出的定义,为解决系统发育问题提供了方法。