New and little known mollusks from ancient chemosynthetic environments Author Kiel, Steffen Institut für Geowissenschaften, Christian-Albrechts-Universität, Ludewig-Meyn-Str. 10, 24118 Kiel, Germany. Author Campbell, Kathleen A. School of Geography, Geology and Environmental Science, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand. E-mail: ka. campbell @ auckland. ac. nz & Department of Invertebrate Zoology and Geology, California Academy of Sciences, Golden Gate Park, San Francisco, California 94118, USA Author Gaillard, Christian Université de Lyon, Lyon 1, UMR CNRS 5125 Paléoenvironnements et Paléobiosphère, 2 rue Raphaël Dubois, 69622 Villeurbanne Cedex, France. E-mail: Christian. Gaillard @ univ-lyon 1. fr text Zootaxa 2010 2010-03-05 2390 1 26 48 https://biotaxa.org/Zootaxa/article/view/zootaxa.2390.1.2 journal article 10.11646/zootaxa.2390.1.2 1175-5326 5305157 Genus Triassurella Nützel and Geiger, 2006 Type species: Triassurella carnica Nützel and Geiger, 2006 (by original designation), from the Late Triassic Cassian Formation in the Italian Alps. Remarks: Although Nützel and Geiger (2006 , p. 281) noted that the asymmetrical limpet shape with strong expansion rate as seen in Triassurella , Sutilizona and Temnocinclis is exclusively found in deep-sea families today, they placed Triassurella in the Scissurellidae . It is transferred here to the Sutilizonidae based on the strong similarities between Triassurella goederti n. sp. and Sutilizona theca McLean, 1989 .