Palynology of Middle Tertiary lacustrine deposits

208 K. TAKAHASHI & U. lux
Clavainaperturites d. clavatus v. d. Hammen & Wymstra
PI. 19, fig. 6.
1964 Clavainaperturites clavatus v. d. Hammen & Wymstra, Leidse GeoI. Med., 30. p.
239, pI. II, fig. 5, 6.
Diagnostic characters: Inaperturate pollen of global shape with a clavate sculputre.
Exine intectate, with crowed clavate projections; pila 1 -1.5 pm in diameter and
1.5- 3 pm in length.
Measurements: 38 X 28 pm in diameter.
Stratigarphic range: Oligocene in British-Guiana (pollen zone E of Mombaka area,
Kwakwani) .
Remarks: Only one specimen was recognized. It is similar to the holotype C.
clavatus, but the clavate sculpture of the Jos specimen appears to consist of
somewhat larger elements than exposed by the South America one.
Botanical affinity: Unknown.
Infraturma Circumpollini (Pflug 1953) Klaus 1960.
Genus Classites Gonzalez Guzman 1967.
Type species: Classites capucinii Gonzalez Guzman 1967.
? Classites sp.
PI. 17, fig. 16.
Description: Inaperturate (?) pollen of global shape. Exine psilate, three (?)-layered,
2.2 pm thick, with a ca. 1 pm thick belt along the "equatorial periphery" of one
hemisphere. On the proximal side no reduced scar is to be noticed.
Measurements: 13 X 12.5 pm in "equatorial" diameter.
Remarks: Only one specimen was encountered. Its assignment to the genus Classites
is doubtful, due to the uncertainties of both the three(?)-layered exine and the structure
of the (trilete ?) scar.
Botanical affinity: Unknown.
Infraturma Reticulonapiti (Erdtman 1947) Vimal 1952.
Genus Retipilonapites Ramanujam 1966 ex Potonie 1970.
Type species: Retipilonapites arcotense Ramanujam 1966.
Retipilonapites sp.
PI. 19, figs. 7 a-b.