Palynology of Middle Tertiary lacustrine deposits
Palynology of Middle Tertiary lacustrine deposits
Palynology of Middle Tertiary lacustrine deposits
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<strong>Palynology</strong> <strong>of</strong> <strong>Middle</strong> <strong>Tertiary</strong> <strong>lacustrine</strong> <strong>deposits</strong> 235<br />
Width / length ratio: 0.69-0.72.<br />
Stratigraphic range: Paleogene to Miocene in the Far East and Late Oligocene in <strong>Middle</strong><br />
Europe.<br />
Japan: Eocene (Miike, Asakura, Kasuya, Ube); Early Oligocene (Kyuragi,<br />
Kasuya, Sakito); <strong>Middle</strong> Oligocene (Onga, Kokura, Nishiichi); Early<br />
Miocene (Sasebo).<br />
Korea: Early-<strong>Middle</strong> Miocene (Changgi, Yonil).<br />
Germany: Late Oligocene (St. Augustin).<br />
Remarks: Tricolporopollenites consularis Takahashi (1961) was differentiated by<br />
Takahashi (1979) into two subspecies, T. consularis consularis and T. consularis<br />
globularis. Kedves (1978) erected the genus Intrabaculitricolporites for a tricolporate<br />
pllen with an intrabaculate exine. Accordingly T. consularis consularis is transferred<br />
to the genus Intrabaculitricolporites Kedves.<br />
Botanical affinity: ? Cupuliferae.<br />
Intrabaculitricolporites consularis Takahashi n. comb. globularis Takahashi n. comb.<br />
PI. 28, figs. 14-16.<br />
1961 Tricolporopollenites consularis Takahashi, Mem. Fac. Sci., Kyushu Univ., Ser. D,<br />
Geol., vol. 11, no. 3, p. 323, Taf. 24, Fig. 53-54 (pro parte).<br />
1979 Tricolporopollenites consularis Takahashi subsp. globularis Takahashi, Takahashi &<br />
Kim, Palaeontographica, B, 170, Ltg. 1 - 3, p. 41, pI. 10, figs. 28-30; pI. 11, fig.<br />
1, 3-10.<br />
Diagnosis: Tricolporate pollen grains.<br />
Figura broad-ellipsoidal or subprolate in<br />
equatorial view. Three conspicuous colpi leading in symmetrical arrangement to the<br />
poles; caverna rather deep. Equatorial pores meridionally elongated. Exine twolayered,<br />
intrabaculate,<br />
1 - 1. 5 pm thick on equatorial side, 1. 5- 2. 5 pm thick in<br />
apocolpia; ectexine double as thick as endexine or <strong>of</strong> same thickness.<br />
Measurements: 28-31 pm in length.<br />
23-25.5 pm in width.<br />
Width / length ratio: 0.74-0.91.<br />
Stratigraphic range: Paleogene and Miocene in the Far East.<br />
Japan: Early Oligocene (Sakito); Early Miocene (Sasebo).<br />
Korea: <strong>Middle</strong> Miocene (Yonil) .<br />
Remarks: Due to the intrabaculate structure <strong>of</strong> the exine Tricolporopollenites consularis<br />
globularis is now transferred to the genus Intrabaculitricolporites Kedves.<br />
Botanical affinity: ? Cupuliferae.
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