UTRECHT MICROPALEONTOLOGICAL BUllETINS

This paper forms part of the author's thesis "Lithostratigraphy, environmental
interpretation and conodont biostratigraphy of the Upper Cambrian
and Lower Ordovician of north-western bland, south-eastern Sweden".
The purpose of this investigation was to unravel the lithogenesis and the
history of the Upper Cambrian and Lower Ordovician rocks along the
north-western coast of bland (figs. 1 and 2).
To obtain a picture of the sedimentary environments of these deposits a
close investigation was carried out into their lithologic characteristics; the
rocks were classified lithostratigraphically on the basis of these characteristics.
Considering the amount of detail of the resulting subdivision it appeared
necessary to find a method of comparable refinement for the biostratigraphic
correlation of the lithostratigraphic units. None of the existing
biozonations suited this purpose and therefore a detailed conodont-zonation
has been established. Lindstrom (1963) has shown that these fossils occur in
enormous quantities in the strata of bland and they proved to be extremely
suitable for detailed biozonation.
After a short introduction into the lithostratigraphy this paper will deal
especially with the conodont-biostratigraphy, the chronostratigraphic position
of the lithostratigraphic and biostratigraphic units and with the conodont
systematics.
The lithostratigraphy, the sedimentary environments and the sedimentary
history of the area will be treated in a separate paper under the title
"Lithostratigraphy and environmental interpretation of the Upper Cambrian
and Lower Ordovician of north-western bland, south-eastern Sweden."