Palynology of Middle Tertiary lacustrine deposits

Palynology of Middle Tertiary lacustrine deposits
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Infraturma Muromati Potonie & Kremp 1954.
Genus Foveosporites Halme 1957.
Type species: Foveosporites canalis Halme 1957.
Foveosporites canalis Balme
PI. 3, figs. 1 a-b.
1957 Foveosporites canalis Bahne, Commonwealth Sci. Ind. Res. Org., Coal Res. Sect. , T. C.,
25, p. 17, pI. 1, figs. 15-17.
Diagnostic characters: Trilete spore with subtriangular equatorial contour. Trilete
mark straight, with more or less swollen lips, almost reaching to the equator. Exospore
sculptured by very small pore-like lumina, which are often connected and irregularly
distributed. The foveo-Iuminal pattern is rather widely spaced.
Measurements: 36 X 32 pm in equatorial diameter.
Exospore 2 pm thick on the sides and 1 pm thick along the comers.
Foveolate lumina 1 pm in diameter.
Stratigraphical range: Early Cretaceous in West Australia (Murphy Shaft near Donnybrook)
.
Remarks: Foveosporites differs from Foveotriletes as the latter has a foveolate exine
without connections between the lumina. The present specimen is identical with
Foveosporites canalis Balme from the Early Cretaceous of West Australia.
Botanical affinity: Lycopodiaceae, Lycopodium.
Turma Monoletes Ibrahim 1933.
Subturma Azonomonoletes Luber 1935.
Infraturma Laevigatomonoleti Dybova & Jachowicz 1957.
Genus Laevigatosporites Ibrahim 1933.
Type species: Laevgatosporites vulgaris (Ibrahim 1932) Ibrahim 1933.
Laevigatosporites josensis n. sp.
PI. 2, figs. 3 - 5 .
Diagnostic description: Monolete spore which has the shape of a bean in equatorial
view. Spore walliaevigate, two-layered, without perispore,
2 - 3 pm thick, on the
side of the dehiscence 2 - 4 pm thick; endexospore thin. The face of the furrow is
straight or slightly convex, whereas the dehiscence is long and somewhat swollen.
Measurements: 76-80 pm in length and 56-61 pm in width.