TY - JOUR A1 - Kriz,J. T1 - Silurian Tetinka Barrande, 1881 (Bivalvia, Spanilidae) from Bohemia (Prague Basin) and Germany (Elbersreuth, Frankenwald) JF - Bulletin of Geosciences JA - Bull. Geosci. Y1 - 2011 VL - 86 IS - 1 SP - 29 EP - 48 CY - Prague PB - Czech Geological Survey SN - 1803-1943 (online), 1802-6222 (print) AV - Free AB - Silurian Tetinka Barrande, 1881 (Nepiomorphia Kriz, 2007) containing seven species Tetinka accedens Barrande, 1881, Tetinka caesarea (Barrande, 1881), Tetinka costulifera Kriz, 2008, Tetinka elongata Barrande, 1881, Tetinka tiro sp. nov., Tetinka trigona (Munster in Goldfuss, 1837), and Tetinka sagitta Barrande, 1881 is characteristic of the Gorstian, Ludfordian and earliest Pridoli of the Prague Basin, Bohemia, Perunica and Tetinka trigona of the middle Ludfordian of Elbersreuth, Frankenwald, Germany, Saxothuringian–Lugian Zone. Tetinka costulifera Kriz, 2008 occurs in the Gorstian coral-crinoid biofacies and the other species occur in the cephalopod limestone biofacies of the Ludlow (Gorstian and Ludfordian) and the earliest Pridoli. Ancestors of Tetinka were most probably related to the reclining Kenzieana Liljedahl, 1989 in the late Wenlock of Bohemia. It is concluded that Tetinka was a suspension filterer with byssate semi-infaunal to infaunal mode of life living with the lanceolate frontal face down and parallel with narrow spaces between the crowded current-oriented cylindrical cephalopod shells on the bottom. This conclusion is supported by the relatively abundant preservation of the shells with conjoined valves in the cephalopod limestones. In the paper is defined especially modified anterior part of the shell - the frontal face - developed in enantiomorphous Stolidotidae Starobogatov, 1977 and Spanilidae Kriz, 2008 adapted to the semi-infaunal or shallow infaunal mode of life. ER -