"Metazoic" Quotes from Famous Books
 ... the gastrula of the amphioxus resembles the typical archigastrula of the lower animals (Figures 1.30 to 1.36) in developing the two primary germinal layers from a single layer of cells. This is clearly the oldest and original form of the metazoic embryo. Although the animals I have mentioned belong to the most diverse classes, they nevertheless agree with each other, and many more animal forms, in having retained to the present day, by a conservative heredity, this ...
— The Evolution of Man, V.1. • Ernst Haeckel |
