Palynology of Middle Tertiary lacustrine deposits

192 K. TAKAHASHI & U. lux
Triplanosporites sp.
PI. 2, fig. 1.
Description: Trip1ane, trilete spore, polar axis shorter than equatorial axis. Distal
pole more or less rounded; proximal pole slightly acute. Trilete laesurae straight.
Exospore smooth, two-layered, 1.5 pm thick on the sides and 3 pm thick on the proximal
pole. Endexospore thin.
Measurements: 44 pm in length of polar axis.
51 pm in breadth.
Remarks: Specific identification of the single specimen appears to be not reasonable.
Botanical affinity: Schizaeaceae, Lygodium.
Genus Hydrosporis Krutzsch 1962.
Type species: Hydrosporis azollaensis Krutzsch 1962.
Hydrosporis cf. levis Krutzsch
PI. 1, fig. 6.
1962 Hydrosporis levis Krutzsch. Atlas, Lfg.1, S. 66, Taf. 26, Fig. 1 -38.
1968 Hydrosporis levis W. Kr. 1962, Rakosi, Ann. Inst. Geol. Publ. Hung., vol. LV, Fasc.
3, p. 524, pI. XXIV. Fig. 5 - 6 .
1984 Hydrosporis levis Krutzsch 1962c. Mohr, Palaeontographica, B, Lfg. 1 - 4. S. 41,
Taf. 1, Fig. 9. 1 u. 9.2.
1985 Hydrosporis levis W. Krutzsch 1962, Nagy, GeoI. Hung., Fasc. 47, p. 126, pI. LV,
Fig. 16-17.
Diagnostic characters: Small trilete spore; equatorial contour subtriangular with convex
sides and rounded corners. Exine chagrenate, two-layered, 0.7 pm thick. Y­
mark with more or less swollen lips (ca. 1 pm wide) which almost reach to the
equatorial margin.
Measurements: 16 pm in equatorial diameter.
Stratigraphical range: Middle Europe (Tertiary).
Germany: Late Oligocene (Lausitz); Early Miocene? (Schlechtenwegen).
Czechoslovakia: Pliocene (Hodonin).
Hungary: Eocene (Dorog); Miocene (Takal).
Remarks: This small trilete spore belongs most likely to Hydrosporis levis Krutzsch
(962) .
Botanical affinity: Salviniaceae. Salvinia or Azolla.