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Chattian
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<p>The Chattian is, in the <a href="/facts/Geologic_timescale/vBAm0D8Q">geologic timescale</a>, the younger of two <a href="/facts/Age_(geology)/qFToW7mN">ages</a> or upper of two <a href="/facts/Stage_(stratigraphy)/6HActMK7">stages</a> of the <a href="/facts/Oligocene/n3gnNogo">Oligocene</a> <a href="/facts/Epoch_(geology)/RhfBWrP2">Epoch</a>/<a href="/facts/Series_(stratigraphy)/KgmTDDy5">Series</a>. It spans the time between <a href="https://geoltime.github.io/?Ma=27.3">27.3</a> and <a href="https://geoltime.github.io/?Ma=23.04">23.04</a> Ma. The Chattian is preceded by the <a href="/facts/Rupelian/9o544Kxj">Rupelian</a> and is followed by the <a href="/facts/Aquitanian_(stage)/4t4Yjx2F">Aquitanian</a> (the lowest stage of the <a href="/facts/Miocene/cBRRzq4g">Miocene</a>). </p>