Fig. 18 in The Cross River Gorillas: A Distinct Subspecies, Gorilla gorilla diehli Matschie 1904

Fig. 18. Plot of upper limb length vs. 3rd manual ray length in Cross River gorillas and in non­Cross­ River western gorillas. Least square regression of the non­Cross­River gorilla datum points fits a line with a slope = 3.799, y'= 3.630, adjusted R2 = 0.79.