births
February 16, 1804
Karl Theodor Ernst von Siebold, German physiologist and zoologist (died 1885)
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.