Preorbital Fossa : one possible cause
Many explanations have been proposed for the function(s) of the POFs. In Equus at least, one possible cause (not "function") is the (...)
Remarks
Articles
Comparisons with Old World Hipparions
The scatter diagram SD-6 shows that (as far as I know) all Old World Hipparion skulls belong to Group B except H. prostylum (Lubéron LY 592) (...)
Chronology
From the chronology of the sites (probably outdated table), it appears that the Group A is very old: Thomson, Echo Quarry, Trinity River. Even (...)
Correlation between length of upper P2-M3 and size of the bar (32)
The correlation between length of the cheek teeth P2-M3 and preorbital bar length (Scatter diagram 5) does not follow the same regression line (...)
Lack of relation between the main axial skull proportions and the pre-orbital bar
It seems that the main axial proportions of the skull are independent from the existence and/or type of POF. – For instance, on the ratio (...)