Palynology of Middle Tertiary lacustrine deposits

270 K. TAKAHASHI & U. lux
porus visible.
Measurements: Polyads: 46 - 57 ,urn X 40 - 53 ,urn in diameter.
Holotype: PI. 10, figs.
Individual vesicles: 20 - 27 ,urn X 15 - 22 ,urn in diameter.
4 a-b; 49 X 47 ,urn in diameter; composed of twelve vesicles
pollen grains; individual grains 20 - 26 ,urn X 15 - 19 pm in diameter; exine 2,um
thick; ectexine tectate or psilate with verrucate processes; endexine somewhat intrabaculate
to smooth; surface of exine reticulate COL pattern), finely punctate
within the lumina of the reticulum; no. of specimen: los 1 - 3 (GN 5323).
Name derivation: sculptus (lat.) = carved.
Remarks: Polyadopollenites sculptus n. sp. is comparable with the following species:
1 ) Polyadopollenites multipartitus Pflug 0953, p. 112, Taf. 15, Fig. 65-66),
polyads: 50 - 80 ,urn in diameter; individual grains: 12 - 25 ,urn in diameter, 12­
26 vesicles; Late Eocene-Early Oligocene, Borken, Germany.
2) Acacia myriosporites Cookson (1954, p. 55, pI 1 , figs. 1, 5 - 8), polyads: circular:
37 - 43 ,urn in diameter; oblong: 37 - 61 ,urn X 35 - 59 ,urn in diameter; individual
grains: 8 -16 vesicles; Miocene-Upper Pliocene, Victoria, Australia.
3) Acacia octosporites Cookson 0954, p. 55, pI. 1, figs. 2 - 4 ), polyads: circular:
21-27 pm in diameter; oblong: 32 X 37 ,urn in diameter; individual grains:
8 vesicles; Late Pliocene, Grange Burn near Hamilton, Victoria, Australia.
4) Polyadopollenites varpalotaensis Nagy 0962, p. 156, pI. 3, figs. 4, 7),
polyads: 30 X 20 ,urn in diameter; individual grains: 16 vesicles: Middle Miocene,
Hungary.
5) Polyadopollenites granulatus Sah 0967, pp. 142-143, pI. XII, figs. 3 - 4),
polyads: 104 -110 ,urn in diameter; Neogene, Burundi, Africa.
6) Acacia-Parkia (Medus, 1975, p. 570, pI. 9, figs. 6,7,9, 10, 14), polyads (82 X
69 ,urn in diameter); Tertiary, Senegal.
7) Polyadopollenites vancampoi Salard-Cheboldaeff 0978, pp. 253-254, pI. VII,
figs.
6 a-b); polyds: 60 X 45 ,urn in diameter; individual garins: 16-18 ,urn in
diameter, 16 vesicles; Late Eocene to Early Miocene, Cameroons.
Botanical affinity: Leguminosae, Adenathera.
Polyadopollenites indecorus n. sp.
PI. 11, figs. 4 - 6; pI. 37, figs. 4 - 7.
Diagnosis: Polyad pollen of subcircular to oval outline. Eleven to twelve vesicles forming
a polyad pollen grain. Exine two-layered, l,um thick, laevigate. No germinal
porus visible.
Measurements: Polyads: 37 - 43 ,urn X 32 - 36 ,urn in diameter.