Abstract
This paper reports a palynological investigation of Lower Triassic rock salt samples from the eastern part of the Netherlands. Bisaccate pollen grains average 99% in the spore-pollen complexes. Most important constituent is the group of non-striate pollen grains (about 91%), whereas striate pollen grains occur only in a small number (about 8%). 19 pollen species are recognized and described, of which 5 are new. Two new genera are described: Eridospollenites and Angustisulcites. The pollen assemblages are compared with Upper Permian and Lower Triassic assemblages from other localities.
Highlights
In the past ten years many palynological investigations have been carried out of Upper Permian and Lower Triassic sediments
Eridospollenites is characterized by a trilete Y-mark in the intexine of the central body, Illinites is characterized by a trilete Y-mark or irregular rent in the exoexine
Eridospollenites do not have any phylogenetic relationship with striate pollen; probably there is a phylogenetic relationship between Eridospollenites and Jugasporites Leschik 1956
Summary
In the past ten years many palynological investigations have been carried out of Upper Permian and Lower Triassic sediments. The author studied a Lower Triassic (Rot) rock salt formation which has a wide extension in the eastern and northern part of the Netherlands. The pollen species mentioned below have been recognized in the samples investigated and are described in this paper: Eridospollenites nov. In the same Figure the numbers of the samples are indicated This rock salt formation is exploited by the “Koninklijke Nederlandse Zoutindustrie” in the neighbourhood of Hengelo (O) and their production covers the total salt consumption of the Netherlands. Thereupon the residue is boiled with dilute hydrochloric acid to dissolve fluor silicates originating from the preceding treatment After this the residues still contain abundantly gypsum and anhydrite, which prevents a good pollen and spore concentration in the slides.
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