Portal:Paleontology/On this day/May 23
- 1847 - Robert Etheridge, Junior was born in Cheltenham, England.
- 1864 - Arthur Smith Woodward was born in Macclesfield, England.
- 1873 - Nikolai Yakovlevich Kuznetsov was born in St. Petersburg, Russia.
- 1905 - Myra Keen was born in Colorado Springs, Colorado, USA.