Maestrichtian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Senonian
 ......Maestrichtian
NTlower Maestrichtian
 upper Maestrichtian
UFMaastrichtian
RTRosario Formation
 Roca Formation
SNEurope. Above Campanian, below Danian (Tertiary).