Environmental and biotic changes in subtropical isolated carbonate platforms during the Late Silurian Kozlowskii Event, Prague Basin

A long-lasting steady period of isotopically heavy carbon in the late Silurian ocean: evolution of the δ13 record and its significance for an integrated δ13, graptolite and conodont stratigraphy

“…Nevertheless, the latter seems to be the more likely scenario as the Silurian faunas of the Barrandian show a distinct affinity to the peri-Gondwanan as well as to the Baltic-Avalonian-Laurentian faunas, indicating that Perunica was located in the temperate zone (Kříž 1999a(Kříž , 2008Manda 2008;Budil et al 2010;Tasáryová et al 2011). Detailed descriptions of middle and late Ludfordian age strata in the Barrandian were published by Kříž (1992Kříž ( , 1998a and Manda & Kříž (2006). The Ludfordian strata of the Barrandian compose the upper part of the Kopanina Formation.…”

The oldest evidence of non-coaxial shell heterostrophy in the Class Gastropoda

“…The oldest member of the Agnesiinae, Pernericirrus sinistorsus (Perner, 1907), was reported from Late Silurian strata of the Barrandian area (Frýda 1997). It occurs within the Prionopeltis archiaci-Atrypoidea modesta Community (Havlíček & Štorch 1990), which was the first highly diversified faunal community after the recovery following the midLudfordian positive carbon isotope excursion and LAU bioevent (Manda & Kříž 2006, Slavík et al 2010) and before Silurian-Devonian boundary bioevent (Manda & Frýda 2010). The Agnesiinae reached their highest diversity and morphological disparity during the Early and Middle Devonian; thus, during the time of major changes of the marine communities, and increasing predation pressure on the benthic as well as the planktic organisms (see Signor & Brett 1984, Brett 2003, Berkyová et al 2007, Klug et al 2010, which also influenced the ontogenetic strategies of gastropods , but see also Nützel et al 2006Nützel et al , 2007.…”

A jawed polychaete fauna from the late Ludlow Kozlowskii event interval in the Prague Basin (Czech Republic)

“…Similarly Slavík et al (2010) recorded moderate changes in the conodont fauna of the Prague Basin, incomparable to those changes recorded in Gotland, Sweden, or Australia. According to Manda & Kříž (2006) also pelagic orthocerids and the nektonic Ceratiocaris passed unaffected through the critical interval. Jeppsson & Aldridge (2000, p. 1144, referring to Bergman (1989), were the first ones to interpret changes in polychaete faunas as a response to Lau event.…”

“…This succession has recently been investigated for graptolite biostratigraphy (Štorch 1995) and the Kozlowskii event (Manda & Kříž 2006, Lehnert et al 2007, Manda et al 2012.…”