July 1: edit
- 1868 - William Sutherland Dun was born in Cheltenham, England.
- 1905 - Leif Størmer was born in Kristiania, Norway.
- 1973 - Isabel Clifton Cookson died.
- 2015 - Jack L. Conrad described the new genus and species of casquehead Lizard Babibasiliscus alxi from the Eocene Bridger Formation of Wyoming, USA.