Two deepsea stratigraphic sections with highly complete oozes from the Middle Miocene to Pleistocene, located on the north Lord Howe Rise and the east equatorial Pacific, have been sampled at coarse intervals. Large assemblages of planktic foraminifera, recovered from each sample, have been examined to determine sets of morphologically intragrading fossil populations and morphologically distinctive individuals, i.e. morphotypes. Each fossil population is interpreted as a remnant of ancient sets...[Show more]
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