Palynology of Middle Tertiary lacustrine deposits
Palynology of Middle Tertiary lacustrine deposits
Palynology of Middle Tertiary lacustrine deposits
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254 K. TAKAHASHI & U. lux<br />
Turma Poroses Naumova 1937 emend. Potonie 1960.<br />
Subturma Monoporines Naumova 1937 emend. Potonie 1960.<br />
Genus Graminidites Cookson 1947 ex Potonie 1960.<br />
Type species: Graminidites media Cookson 1947 ex Potonie 1960.<br />
Graminidites d. subtiliglobosus (Trevisan) Krutzsch<br />
PI. 15, fig. 1.<br />
1967 Monoporopollenites subtiliglobosus Trevisan, Pa1aeontographica Litalica, 62 (N. S.<br />
32), p. 49, 63, pI. XXXIII, figs. 6 a-f.<br />
1970 Graminidites subtiliglobosus (Trevisan 1967) Krutzsch, Atlas, Ltg. VII, S. 54, Taf.<br />
2, Fig. 1 -12.<br />
1986 Graminidites d. subtiliglobosus (Trevisan) Krutzsch, Takahashi & lux, Bull. Fac.<br />
Liberal Arts, Nagasaki Univ., Nat. Sci., vol. 26, no. 2, p. 178, Taf. 20, Fig. 16.<br />
Diagnostic characters: Monoporate pollen <strong>of</strong> globular or oval shape, disregarding<br />
secondary folds. Exine intrabaculate, 0.5 pm thick; sculpture finely punctate. Pore<br />
round, 2.5 pm in diameter, with 1.5 ,urn wide annulus.<br />
Measurements: 34 X 35 ,urn in diameter.<br />
Stratigraphic range: Late Oligocene to Plio-Pleistocene in <strong>Middle</strong> Europe.<br />
Germany: Late Oligocene (Oberbayerische Faltenmolasse; St. Augustin); <strong>Middle</strong><br />
Miocene (Klettwitz); Miocene-Pliocene (Rhine land); Pliocene (Elbe;<br />
Wetterau); Plio-Pleistocene (Buchenau).<br />
Italy: Late Miocene (Gabbro / Toscana).<br />
Poland: Late Miocene (Rypin).<br />
South Bohemia: Pliocene.<br />
Remarks: The single specimen, which was encountered, has a rather narrow annulus<br />
around the pore.<br />
Botanical affinity: Gramineae.<br />
Graminidites d. neogenicus Krutzsch<br />
PI. 15, fig. 5.<br />
1970 Graminidites neogenicus Krutzsch, Atls, Ltg. VII, S. 54, Taf. 2, Fig. 13-19.<br />
Diagnostic characters: Monoporate pollen grain. Figura oval with a pore (I. 5 ,urn in<br />
diameter) which is framed by a 2.5 ,urn wide annulus. Exine chagrenate, 0.5 pm<br />
thick, deformed by secondary folds.<br />
Measurements: 27 X 20 ,urn in diameter.
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