Zdenek Burian ( 1905 - 1981 ) was a Slovak painter. Zdenek Burian s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 8437 USD for Plutonia in 2004 to 20700 USD for Neanderthals driving ibex over chasm. in 2013 , based on the size and medium of the artwork.