 It was given its name in 1910 by the Swiss palaeontologist Hans Georg Stehlin, to characterise the dramatic turnover of European mammalian fauna, which he placed at the Eocene-Oligocene boundary.A comparable turnover in Asian fauna has since been called the "Mongolian Remodelling".The Grande Coupure marks a break between endemic European faunas before the break and mixed faunas with a strong Asian component afterwards.