历史分期千年，从亚当到现在，用一千年进行计数，使用（中世纪的）当前时间作为第六个时期也是最后一个阶段。 文化运动 List of time periods（英语：List of time periods） Logarithmic timeline（英语：Logarithmic timeline） 参考 辭海編輯委員會
期 (地质学)rather than geologic (geological) periods. The stage nomenclature is quite complex. For an excellent time-ordered list of faunal stages, see The Paleobiology
NASA恆星及系外行星數據庫used to search for periods in the transit survey data sets. A user can also upload their own time series data to search for periods in their own data.
世 (地质学)rather than geologic (geological) periods. The stage nomenclature is quite complex. For an excellent time-ordered list of faunal stages, see The Paleobiology
纪 (地质学)rather than geologic (geological) periods. The stage nomenclature is quite complex. For an excellent time-ordered list of faunal stages, see The Paleobiology