Uhrmann, Virgil Dates of birth and death: 1900 fl. - 1920 fl.
Also known as: V. U. ; Worked for: Graser's naturgeschichtliche Tafeln (Annaberg, later Munich 1896-1952), also known as Naturwissenschaftliche und landwirtschaftliche Tafeln (from 1910) ;
Ukhtomsky, Andrei Grigorjewitsch Dates of birth and death: 1771 - 1852
Also known as: A. G. U. ; Andrej Grigor'evič Uchtomskij ; Worked for: Atlas of Krusenstern's circumnavigation 1813
Ulmer, Oscar Erwin Dates of birth and death: 1888 in Hamburg - 1963 / 1964
Also known as: O. E. U. ; Oskar Ulmer / O. Ulmer ;Worked for: Genera insectorum (Bruxelles 1902-1963) ;
Ulrich, Heinrich Dates of birth and death: 1542 ?, baptized 1567 in Nuremburg - 1621
Also known as: H. U. ; Worked for: duke of Braunschweig ; Basilius Besler (1561-1629): Hortus Eystettensis (1613) ; Christoph Fabius Brechtel ; Paul Kauffmann: Virtvtis & Honoris oder Tugend Büchlein (Nuremberg 1606) ;
Ulrich, Edward Oscar Dates of birth and death: 1851 in Covington, Kentucky - 1944
Also known as: E. O. U. ; Edward Ulrich ;Worked for: Geological Survey of Illinois. Geology Paleontology (1890, vol. 8) ; Newton H. Winchell: Geological Natural History Survey Minnesota (1895) ;
Ulyanin, Vasilij Nik. Dates of birth and death: 1840 - 1889
Also known as: V. N. U. ; Vas. Nik. Ulyanin ; Worked for: Die Arten der Gattung Doliolum im Golfe von Neapel und den angrenzenden Meeres-Abschnitten (Neapel 1884) ; Rakoobraznyia (Crustacea) (St. Petersburg & Moscow 1875)
Underwood, Thomas Richard Dates of birth and death: 1772 or 1765 - 1835 or 1836
Also known as: T. R. U. ; Thom. R. U. ;Worked for: Philip Rashleigh (1729-1811): Specimens British Minerals (vol. 2 (1802)) ;
Unger, Joseph Dates of birth and death: 1785 in Au near Munich - 1841 after
Also known as: J. U. ; Worked for: Philipp Franz Siebold (1796-1866) ; Joseph Gerhard Zuccarini (1797-1848) ; Jean Louis Rodolphe Agassiz (1807-1873) ; Johann Baptist von Spix (1781-1826) ; Peter Alexandrovich Tchihatcheff (1808-1890) ;
