NeanderthalBrains | R Documentation |
Brain size (lnbrain
) and body mass (lnmass
) in Neanderthals
and early modern humans (species
).
NeanderthalBrains
A data frame with 39 observations on the following 3 variables.
log of body mass (kg)
log of brain size
a factor
with levels neanderthal
recent
Ruff, C.B., E. Trinkaus, and T.W. Holliday. 1997. Body mass and encephalization in Pleistocene Homo. Nature 387: 173-176.
xyplot(ln.brain ~ ln.mass, data=NeanderthalBrains, groups=species)
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