Fig. 1
From: Ernst Haeckel, Nikolai Miklucho-Maclay and the racial controversy over the Papuans
a and b Diagram - Haeckel’s overview of zoology, where he introduced his famous concepts of ontogeny, phylogeny and ecology. The scheme incorporates both the ‘static’, and ‘dynamic’ aspects of animal life, where ‘static’ is used to describe structures and forms (morphology), and ‘dynamic’ deals with a state of change. Translated by Levit and Hossfeld [40] and reproduced by the authors with slight changes from the original scheme in: Haeckel 1866, vol. 1, p. 238