January 23: edit
- 1833 - The crew of the HMS Beagle, which carried Charles Darwin on its second voyage, helped set up a missionary outpost in South America.
- 1869 - Elmer S. Riggs was born in Trafalgar, Indiana, USA.
Multivariate Analyses of Small Theropod Dinosaur Teeth and Implications for Paleoecological Turnover through Time
Derek W. Larson, Philip J. Currie
published 23 Jan 2013
Neurocranial Osteology and Neuroanatomy of a Late Cretaceous Titanosaurian Sauropod from Spain (Ampelosaurus sp.)
Fabien Knoll, Ryan C. Ridgely, Francisco Ortega, Jose Luis Sanz, Lawrence M. Witmer
published 23 Jan 2013