Ehrenburg, Christian Gottfried (1795–1876)
![Christian Ehrenburg](../../images20/Christian_Ehrenburg.jpg)
Christian Ehrenburg was a German biologist and founder of the science of micropaleontology. Ehrenburg studied at Berlin University and traveled widely as a naturalist, identifying and classifying many terrestrial and marine plants and microorganisms. He advanced the theory of "complete organisms", stating that all animals – even microscopic ones – have complete organ systems; it was later refuted.