Palynology of Middle Tertiary lacustrine deposits

Palynology of Middle Tertiary lacustrine deposits
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lyelongated.
Measurements: 30 X 25 pm in size.
Width / length ratio: 0.83.
Remarks: Only one specimen was observed.
Botanical affinity: Aceraceae or Gentianaceae.
Genus Rhoipites Wodehouse 1933.
Type species: Rhoipites bradleyi Wodehouse 1933.
Rhoipites mirus Takahashi & lux
PI. 30, fig. 6; pI. 31, fig. 9.
1982 Rhoipites mirus Takahashi & lux, Bull. Fac. Liberal Arts, Nagasaki Univ. Nat. Sci.,
vol. 23, no. 1, pp. 53-54, Taf. 6, Fig. 11-12.
1986 Rhoipites mirus Takahashi & lux, Bull. Fac. Liberal Arts, Nagasaki Univ. Nat. Sci.,
vol. 23, no. 2, p. 164, Taf. 26, Fig. 12-l7, 22-23.
Diagnostic characters: Tricolporate pollen grains.
Figura prolate to subprolate in
equatorial view. Three slender colpi distinct, parallel to each other on the sides and
converging at the poles. Pores meridionally elongated. Exine two-layered, finely
reticulate, 0.5- 1 pm in diameter, intrabaculate; muri baculate,
Measurements: 19-20 pm X 15 pm in size.
Width / length ratio: 0.75-0.789.
Previous records: Middle Europe (Middle-Late Oligocene).
1 pm long.
Germany: Middle Oligocene (Bergisch Gladbach); Late Oligoccene (St.
Augustin) .
Remarks: The two specimens, which were recognized, are identical with R. mirus
Takahashi & lux.
Botanical affinity: Unknown.
Rhoipites minus Takahashi & lux
PI. 30, figs. 10-11; pI. 31, figs. 5 - 8 ;
pI. 38, fig. 6.
1986 Rhoipites minus Takahashi & lux, Bull. Fac. Liberal Arts, Nagasaki Univ., Nat.
Sci., vol. 26, no. 2, pp. 163-164, Taf. 26, Fig. 5 -11.
Diagnostic characters: Tricolporate pollen of spheroidal to ovoidal shape in equatorial
and polar views. Three slender colpi radially symmetrical, converging at the poles;