COLLECTION ABECASIS / SCIENCE PHOTO LIBRARY COLLECTION ABECASIS / SCIENCE PHOTO LIBRARY
Evolution of aquatic organisms. A. Demarle showing different types of aquatic invertebrates, representing their evolution from simple protozoa (top left) to more complex lifeforms such as echinoderms (centre right), molluscs (bottom left) and crustaceans (bottom right). From 'Natural Creation and Living being' by French journalist and author Jules Rengade (1841-1915).
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