. Bulletin of the British Museum (Natural History), Geology. NEOGENE PLANT BEDS 401 (Leopold (1968) used the term " extirpation " for this phenomenon), and were replaced by plants of the Pliocene Component which were presumably able to with- stand slightly lower mean temperatures. These movements south have been recorded in southern France (Pons, 1964) where pollen of the European Miocene component is found in fairly large percentage frequency in deposits of roughly middle Pliocene age. 12- 10- E f 6- M 2-. age 12 3 4 Miocene 7 8 9 Pliocene 10 11 Fig. 7. Change in the number of
. Bulletin of the British Museum (Natural History), Geology. NEOGENE PLANT BEDS 401 (Leopold (1968) used the term " extirpation " for this phenomenon), and were replaced by plants of the Pliocene Component which were presumably able to with- stand slightly lower mean temperatures. These movements south have been recorded in southern France (Pons, 1964) where pollen of the European Miocene component is found in fairly large percentage frequency in deposits of roughly middle Pliocene age. 12- 10- E f 6- M 2-. age 12 3 4 Miocene 7 8 9 Pliocene 10 11 Fig. 7. Change in the number of Miocene (o) and Pliocene (x) Elements (see Table 2) present in eleven Neogene assemblages that have been described in the papers listed below. The numbers along the x axis refer to these eleven assemblages, though the sequence in which they are arranged along the axis is of little correlative significance, since the axis does not follow any accurate scale. The arrow shows the age of the Derbyshire assemblage as determined by this method. I. Upper Miocene. Neuy-Stolz, 1958. 2. Upper Miocene. Kremp, 1950. Steinberg no. 12. 3. Upper Miocene. Kremp, 1950. Delliehausen no. 6. 4. Upper Miocene. Pacltova, 1966. 5. Upper Miocene. Mazancova, 1962. 6. Branssumian. Zagwijn, 1967. Born I and 2. 7. Susterian. Zagwijn, i960. Koningsbosch, Plate 9. 8. Upper Pliocene. Leschik, 1951. Floz i. 9. Reuverian. Altehenger, 1959. Wallensen (K). ID. Reuverian. Zagwijn, i960. Susterian Diagram, Plate 11. 11. Tiglian. Zagwijn, 1963. Tegelen Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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