books.google.co.uk - The system of multicellular animals presented here is an alternative to the traditional classification system. In a new approach to the phylogenetic order, this book strives for an objective systematization of the metazoa, seeking a new path in the field of academic research and teaching....http://books.google.co.uk/books/about/Multicellular_Animals.html?id=FweHI7uZ198C&q=N.P.+KRISTENSEN&utm_source=gb-gplus-shareMulticellular Animals
