- molecular chronometers
Nucleic acid and protein sequences that gradually change over time in a random fashion and at a steady rate, and which therefore can be used to determine phylogenetic relationships.
Microbiology. Aard_Wark . 2009.
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geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… … Universalium
Portal:Time — 08:58, November 24, 2011 (UTC) (update) WELCOME TO THE TIME PORTAL Time … Wikipedia