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BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Middle Pleistocene
 ......Elsterian
RTCentral Polish Glaciation
 Illinoian
 Mindel
SNMiddle Pleistocene glacial stage in NW Europe. Above Menapian and below Saalian. Approximately equivalent to Mindel and Illinoian. Added to Thesaurus in 1985.