Portal:Paleontology/On this day/September 9
- 1794 - William Lonsdale was born in Bath, England.
- 1823 - Joseph Leidy was born in Philadelphia, Pennsylvania, USA.
- 1844 - Wilhelm von Branca was born in Potsdam, Germany.
- 1987 - Vratislav Mazák died in Prague, Czech Republic.
- 1994 - Alfred R. Loeblich Jr died.