Yellow ochre is an ancient pigment, used in pre-historic times.
I have used Yellow Oxide acrylic paint as the base of all these spreads. It has yellow ochre in it.
Ochre comes from the Greek word ochros, meaning pale yellow. It was one of the first pigments to be used by human beings, and evidence of its use has been found at 300,000 year old sites in France and the former Czechoslovakia.--from Liquitex Acrylic Paint Chip sample from Dick Blick website