![Tragoportax aff. cyrenaicus (KNM-LT 23149) in anterior view and AMNH... | Download Scientific Diagram Tragoportax aff. cyrenaicus (KNM-LT 23149) in anterior view and AMNH... | Download Scientific Diagram](https://www.researchgate.net/publication/50227885/figure/fig5/AS:340084181225482@1458093795889/Tragoportax-aff-cyrenaicus-KNM-LT-23149-in-anterior-view-and-AMNH-101260-a-left-horn.png)
Tragoportax aff. cyrenaicus (KNM-LT 23149) in anterior view and AMNH... | Download Scientific Diagram
![Wallace, A. R. 1876. The geographical distribution of animals; with a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface. Volume 1. Wallace, A. R. 1876. The geographical distribution of animals; with a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface. Volume 1.](http://darwin-online.org.uk/converted/Ancillary/1876_GeographicalDistribution_S718.1/geographicaldist01wall_fig001.jpg)
Wallace, A. R. 1876. The geographical distribution of animals; with a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface. Volume 1.
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/scans/1871_Descent_F937.2(online)/1871_Descent_F937.2_028.jpg)
Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/scans/1871_Descent_F937.2(online)/1871_Descent_F937.2_093.jpg)
Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.
![Popular Official Guide to The New York Zoological Park, by William T. Hornaday: a Project Gutenberg eBook Popular Official Guide to The New York Zoological Park, by William T. Hornaday: a Project Gutenberg eBook](https://www.gutenberg.org/files/53141/53141-h/images/pmg000.jpg)
Popular Official Guide to The New York Zoological Park, by William T. Hornaday: a Project Gutenberg eBook
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/scans/1871_Descent_F937.2(online)/1871_Descent_F937.2_219.jpg)
Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/scans/1871_Descent_F937.2(online)/1871_Descent_F937.2_094.jpg)
Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/published/1871_Descent_F937/1871_Descent_F937.2_fig25.jpg)
Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.
![Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition. Darwin, C. R. 1871. The descent of man, and selection in relation to sex. London: John Murray. Volume. 2. 1st edition.](http://darwin-online.org.uk/converted/scans/1871_Descent_F937.2(online)/1871_Descent_F937.2_318.jpg)