In 1887 he published a highly regarded work titled Die Bryozoen der weissen Schreibkreide der Insel Rügen (Bryozoa of the white chalk of Rügen).
Theodor Fontane | Theodor Mommsen | Theodor Herzl | Carl Theodor Dreyer | Thomas Theodor Heine | Theodor Boveri | Theodor Meynert | Theodor Storm | Theodor Loos | Theodor Leschetizky | Theodor Kittelsen | Theodor Eimer | Theodor Schwenk | Theodor Leutwein | Theodor Kirchner | Theodor Heuss | Theodor Estermann | Theodor Busse | Theodor Anton Ippen | Karl-Theodor zu Guttenberg | Karl Theodor Anton Maria von Dalberg | Karl Theodor | Johannes Theodor Reinhardt | Theodor Wertheim | Theodor Uppman | Theodor Reuss | Theodor Reik | Theodor Kullak | Theodor Körner | Theodor-Heuss-Gymnasium Heilbronn |