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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan

Fig. 4

Dinoflagellate cysts from the Chiba composite section. Max. dia. = maximum diameter. EF = England Finder reference. a Tuberculodinium vancampoae, polar view at upper focus; cyst max. dia. 122 μm; sample TB 16, slide 1 (20 μm), EF E25/4. b Polysphaeridium zoharyi, apical view of hypocyst at upper focus; central body max. dia. 52 μm; sample TB 98, slide 1 (10 μm), EF E20/1. c, d Lingulodinium machaerophorum, dorsal view at upper and mid-foci; central body max. dia. 58 μm; sample TB2 99, slide 1, EF E36/0. e, f Impagidinium aculeatum, uncertain view at upper- and mid-foci; central body max. dia. 35 μm; sample TB2 26, slide 1, EF E20/3. g–i Impagidinium paradoxum, antapico-dorsal view at upper, mid-, and lower foci; central body length 26 μm; sample TB2 30, slide 2, EF K26/3. j–l Impagidinium patulum, dorsal view at upper, mid-, and lower foci; central body max. length 63 μm; sample TB 92, slide 1, EF Q34/4

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