February 13: edit
- 1805 - Édouard de Verneuil was born in Paris, France.
- 1864 - Frederick Chapman was born in London, England.
- 1870 - Franz Unger died in Graz, Austria at age 69.
- 1891 - William Davies died in Hertford, England.
Secondary Cartilage Revealed in a Non-Avian Dinosaur Embryo
Alida M. Bailleul, Brian K. Hall, John R. Horner
published 13 Feb 2013