The zootype and the phylotypic stage
- 1 February 1993
- journal article
- Published by Springer Science and Business Media LLC in Nature
- Vol. 361 (6412), 490-492
- https://doi.org/10.1038/361490a0
Abstract
What is it that defines an animal? The definition provided here, made on the basis of developmental biology, suggests methods for resolving phylogenetic problems.Keywords
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