Abstract
Abstract. One new chitinozoan genus, Salopochitina, and three new chitinozoan species Salopochitina bella, Eisenackitina varireticulata and Eisenackitina spongiosa, all of early Wenlock age, are described from two British Geological Survey boreholes at Lower Hill Farm, Shropshire, and Eastnor Park, Hereford and Worcester. The new taxa have short stratigraphical ranges, are relatively abundant, and may be useful for correlation in successions from Wales and the Welsh Borderlands.
Highlights
Chitinozoans from the Wenlock of Wales and the WelshBorderlands were first described by Eisenack (1977, 1978), who illustrated forms from the Much Wenlock Limestone Formation at Dudley in the West Midlands
This locality is on the outcroptof the upper part of the CoalbrookdaleFormation, at 485 ft OD and about 1.3km east south-east of the standard section for the base of the Wenlock series in Hughley Brook
The borehole was cored to 247.50m in a sequencecomprising partoftheCoalbrookdale Formation, theBuildwasFormation, and part of the PurpleShales(Text-fig.2).Detailed lithological and biostratigraphical data from this borehole, has been used to complement the generally poor surface exposures in the area,which includethe internationalstratorypefortheWenlock Series(Bassettetal., 1975).In particular,graptolitesrecovered from the borehole were used to establish the presence of the Wenlock graptolite biozones (Bassett et d . ,1975, pp. 5-8)
Summary
Chitinozoans from the Wenlock of Wales and the WelshBorderlands were first described by Eisenack (1977, 1978), who illustrated forms from the Much Wenlock Limestone Formation at Dudley in the West Midlands. In 1973,the British Geological Survey (B.G.S.)drilled the Lower Hill Farm Borehole at (National Grid reference: SO 5817 9788). Samples were taken at intervals of about 5m in the Lower Hill Farm borehole; and at intervals of two metres in the Woolhope Limestone, and five metres in the Coalbrookdale Formation at Eastnor Park 2).The samplesare registered in the British Geological Survey's MPA series, (Lower Hill Farm borehole, MPA 26045 to 26084; Eastnor Park borehole, MPA 284 10to 284 16and 28474 to 28485).
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