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Progress in Earth and Planetary Science
Fig. 5 | Progress in Earth and Planetary Science

Fig. 5

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

Fig. 5

Dinoflagellate cysts from the Chiba composite section. Max. dia. = maximum diameter. EF = England Finder reference. a–c Nematosphaeropsis labyrinthus, equatorial view at upper, mid-, and lower foci showing nearly smooth central body surface; ectophragm max. dia. 52 μm, central body max. dia. 27 μm; sample TB2 97, slide 2 (10 μm) MJH, EF J17/2. d–f Spiniferites cf. belerius, dorsal view at upper, mid-, and slightly lower foci; central body length 31 μm; sample TB2 97, slide 3 (20 μm) MJH, EF T21/3. g–i Spiniferites mirabilis, equatorial view at upper, mid-, and lower foci; central body length 62 μm; sample TB 16, slide 1 (10 μm), EF V17/4

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