The problem was that many of these finds were not uniquely different from each other; in fact, Cope and Marsh knew that some of the fossils they were collecting had already been found by the others.
Porén, gran parte destes achados non eran diferentes dos demais, e de feito Cope e Marsh sabían que algúns dos fósiles que estaban a recoller xa foran descubertos anteriormente por outros.