1 INTRODUCTION  
2 THE SIMULATION  
2.1 Horizon-AGN  
2.2 Identifying galaxies and building merger trees  
2.3 Prediction of observables  
3 REDSHIFT EVOLUTION OF THE PROGENITORS OF LOCAL EARLY-TYPE GALAXIES  
4 IDENTIFYING LATE-TYPE GALAXIES THAT ARE PROGENITORS OF PRESENT-DAY EARLY-TYPES  
5 SUMMARY