| title | creator | language | description | tableOfContents | contributor | subject | created |
| Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone | | en | | | | | 2009-05-17 |
| Taxonomic Status of Some Mice of The Peromyscus boylii Group in Eastern Mexico, With Description of a New Subspecies | Alvarez, Ticul, 1935-2001 | en | | | | | 2010-08-23 |
| The Subspecies of the Mountain Chickadee | Grinnell, Joseph, 1877-1939 | en | From: University of California Publications in Zoology, Vol. 17, No. 17 | | | | 2010-08-25 |
| The Foundations of the Origin of Species
Two Essays written in 1842 and 1844 | Darwin, Charles, 1809-1882 | en | | | Darwin, Francis, Sir, 1848-1925 [Editor] | Natural selection; Evolution (Biology) | 2007-09-22 |
| Comments on the Taxonomic Status of Apodemus peninsulae, with Description of a New Subspecies from North China | Jones, J. Knox, 1929-1992 | en | | | | | 2010-03-17 |
| A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, From Western Mexico | | en | | | | | 2010-08-06 |
| Records of Harvest Mice, Reithrodontomys, from Central America, with Description of a New Subspecies from Nicaragua | | en | | | | | 2010-04-24 |
| British Butterfiles
Figures and Descriptions of Every Native Species | Coleman, W. S. (William Stephen), 1829-1904 | en | | | Evans, Edmund, 1826-1905 [Illustrator] | | 2010-10-11 |
| On the origin of species | Darwin, Charles, 1809-1882 | en | See also PG#1228 for the First Edition | | | Evolution (Biology); Natural selection | 1999-12-01 |