Given the question: What key details about friedrich siegmund voigt can be extracted from the following bio? Bio: friedrich siegmund -lrb- sigismund -rrb- voigt -lrb- voight -rrb- -lrb- 1781 - 1850 -rrb- was a german zoologist and botanist , with a special interest in spermatophytes . he taught at jena , where he translated georges cuvier 's '' le regne animal '' -lrb- 1817 -rrb- , and was the director of the jena botanical gardens and the museum of zoology . he proposed a classification of the animal kingdom with nine classes , based on body structure , such as those that are soft and gelatinous , those that are articulated and have an exoskeleton , and those that have an endoskeleton .
The answer is:
- fields is zoology , botany- death date is december 10 , 1850- author abbrev bot is f.voigt- author abbrev zoo is voigt- birth date is 1791- name is friedrich siegmund voigt- nationality is german- birth place is gotha