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Abstract
The small problematic mollusc Jinonicella kolebabai Pokorný, 1978 is described from the lower Silurian Laketown Dolostone at Barn Hills in Utah, USA. The associated conodonts suggest a late Telychian age for the assemblage, which makes this the oldest occurrence of this species. Previous Silurian records of Jinonicella were known from the Sheinwoodian to Ludfordian of Bohemia, the Czech Republic, Gotland, Sweden and the Carnic Alps of Austria.
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Acknowledgements
Financial support from the Swedish Institute to A.P.G. is greatly acknowledged. Mark T. Harris and Peter M. Sheehan organised the fieldwork and helped to sample the section, James E. Barrick made preliminary processing of samples. John Chamberlain and an anonymous reviewer are acknowledged for reviewing the manuscript.