Morphometric and Statistical Analysis of the Palmaris Longus Muscle in Human and Non-Human Primates

Table 2

Statistics of the comparative anatomy of palmaris longus.

Taxon	PAF	PAF=RF1×𝑃1+RF2×𝑃2+RF3×𝑃3+RF4×𝑃4+RF5×𝑃5𝑃1+𝑃2+𝑃3+𝑃4+𝑃5	CAI=|PAF𝑖−PAF𝑖𝑖|
Propithecus sp.	1	PAF=4×1+4×1+3×1+2×1+1×114	Reference (most primitive characters)
Lemur catta	1	PAF=4×1+4×1+3×1+2×1+1×114	0
Callithrix sp.	1	PAF=4×1+4×1+3×1+2×1+1×114	0
Sapajus sp.	1	PAF=4×1+4×1+3×1+2×1+1×114	0
Ateles sp.	1	PAF=4×1+4×1+3×1+2×1+1×114	0
Macaca fuscata	0.964	PAF=4×1+4×1+3×1+2×1+1×0.514	0.036
Pongo sp.	0.964	PAF=4×1+4×1+3×1+2×1+1×0.514	0.036
Modern humans	0.947	PAF=4×1+4×1+3×1+2×0.878+1×0.514	0.053
Pan sp.	0.918	PAF=4×1+4×1+3×1+2×0.678+1×0.514	0.082
Gorilla sp.	0.867	PAF=4×1+4×1+3×1+2×0.316+1×0.514	0.133

PAF is the weighted average of frequencies; CAI is Comparative Anatomy Index.