FIGURE 52 in A revision and addition to Zopheridae (Coleoptera: Tenebrionoidea) in Baltic amber: possible connections between modern Holarctic distributions and Eocene 'amber forests'

FIGURE 52. The "circum-Arctic quadrants" schema for possible pathways of gradual reduction within zopherid distribution ranges: from the primarily widespread Holarctic distribution area in the Baltic amber age to the different types of distributional disjunctions that are present in the Recent. Abbreviations: WP—West Palearctic; EP—East Palearctic; EN—East Nearctic; WN—West Nearctic.