be bound by/bind be a part of/contain be part of/contain be part of/contain be part of/contain be part of/contain be part of/contain be the lower boundary of/be the upper boundary of be the lower boundary of/be the upper boundary of be the lower boundary of/be the upper boundary of be the lower boundary of/be the upper boundary of be the lower boundary of/be the upper boundary of be the lower boundary of/be the upper boundary of be a property of/have a property of be a property of/have a property of be recognized within/define the geographic range of have existed during/date the existance of be bound by/void be bound by/void be bound by/void be represented by/represent biozone biozone marker chronozone fossil taxon geochronologic age geochronologic eon geochronologic epoch geochronologic era geochronologic event geochronologic period geochronologic subepoch geochronologic zone geologic province pty geologic age pty geologic age range rock feature sea level cycle event sea level supercycle temporal event third order sea level cycle sea level cycle temporal period temporal object reference behavior