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"Skeleton of the Ateles Beleebuth." — Encyclopedia Britanica, 1893

Monkey Skeleton

"Skeleton of the Ateles Beleebuth." — Encyclopedia Britanica, 1893

"The Greek word ateles signifies imperfect, and is applied to this genus in allusion to the absence of the thumb on the hands, which characterizes them. The tail, however, by its extraodinary power, abundantly supplies this defect." —Goodrich, 1885

Spider Monkey

"The Greek word ateles signifies imperfect, and is applied to this genus in allusion to the absence…