About Karl Theodor Ernst von Siebold
Prof Karl (Carl) Theodor Ernst von Siebold FRS(For) HFRSE was a German physiologist and zoologist. He was responsible for the introduction of the taxa Arthropoda and Rhizopoda, and for defining the taxon Protozoa specifically for single-celled organisms. Siebold was the originator, after Cuvier, of the first important reforms in systematic zoology, and established the unicellular nature of the Protozoa, which he first combined into a phylum. E. von Siebold), being the first volume of Lehrbuch der Vergleichenden Anatomie (Manual of comparative anatomy; edited by C. A. von Kölliker he founded the leading biological journal Zeitschrift für Wissenschaftliche Zoologie (Journal for Scientific Zoology), which he edited until his death.
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