Portal:Paleontology/On this day/July 23
- 1834 - The HMS Beagle, carrying Charles Darwin on its second voyage, arrived at Valparaiso, Chile.
- 1836 - The HMS Beagle, carrying Charles Darwin on its second voyage, departed Ascension Island for Bahia, Brazil.
A ‘Terror of Tyrannosaurs’: The First Trackways of Tyrannosaurids and Evidence of Gregariousness and Pathology in Tyrannosauridae
Richard T. McCrea, Lisa G. Buckley, James O. Farlow, Martin G. Lockley, Philip J. Currie, Neffra A. Matthews, S. George Pemberton
published 23 Jul 2014