(Table 1) Age model and ageprofile datum description at DSDP Leg 74 sites

Sediment depth is given in mbsf. The species used on this leg to define Paleogene zone boundaries are explicitly stated as they are not invariably those originally used by Martini (1971; doi:10.2973/odp.proc.sr.112.180.1990).沉积物深度以海底以下米（meters below seafloor, mbsf）为单位。本次航次用于划定古近纪带边界的物种已明确列明，原因是这些物种并非始终采用马丁尼（Martini，1971；doi:10.2973/odp.proc.sr.112.180.1990）最初所使用的物种。