- 1857 - Florentino Ameghino was born in Luján, Argentina.
- 1943 - Charles E. Resser died in Washington, DC, USA.
- 1962 - Larry Kramer discovered a lower mastodon molar now catalogued as GRPM 12540 in Michigan, USA.
- 1982 - Pei Wenzhong died.
Forearm Posture and Mobility in Quadrupedal Dinosaurs
Collin S. VanBuren, Matthew Bonnan
published 18 Sep 2013