Abstract
The dasycladale Clypeina helvetica was described and illustrated with six drawings by Morellet and Morellet (Bull Soc Géol Fr 4o ser 18:102–105, 1918) from the “Bartonian” of the Helvetic Zone of southwestern Switzerland. Since then, C. helvetica has not been reported again neither from Switzerland nor from any other locality. Abundant material sampled from the Priabonian Diablerets Member of the Sanetsch Formation in the type area Lapis de Tsanfleuron permits a more detailed description of the species including biometric data and thin-section illustrations. C. helvetica is validated by the designation of a lectotype to serve as nomenclatural type.
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Acknowledgments
Robin Marchant (Geological Museum of Lausanne) kindly provided photographs of and information on the original material of Clypeina helvetica. David Jaramillo-Vogel is thanked for his help with the sampling. Financial support for the research was provided by the Swiss National Science Foundation grants no. 20-121545 and 20-137568 to TBA and AS. Many thanks to the reviewers Filippo Barattolo (Naples) and Marc Conrad (Perly) for their helpful comments on the manuscript.
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Schlagintweit, F., Bover-Arnal, T., Menkveld-Gfeller, U. et al. Clypeina helvetica Morellet and Morellet, 1918, revisited. A Priabonian (Late Eocene) dasycladalean alga from the Diablerets Nappe of the Helvetic Alps, southwestern Switzerland. Facies 59, 287–297 (2013). https://doi.org/10.1007/s10347-012-0311-7
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DOI: https://doi.org/10.1007/s10347-012-0311-7