Early Pragian conodont‐based correlations between the Barrandian area and the Spanish Central Pyrenees

Abstract

Occurrences and distribution of extremely scarce eognathodontids do not facilitate reliable correlation across the European regions. The correlation of the traditional early Pragian of the Prague Synform (a part of the classical Barrandian area) and the Spanish Central Pyrenees (section Segre 1) is based on conodont taxa of the Icriodus steinachensis and the Pelekysgnathus serratus stocks. This correlation has the potential to be extended to other peri-Gondwanan regions where this scarcity of eognathodontid faunas exists as well. Application of the morphotype subdivision in I. steinachensis enables approximation of the beginning of the Pragian in the Pyrenees. It is based on the entry of I. steinachensis beta morphotype; it enters together with early eognathodontid taxa in the Barrandian sections. These correlations show that routine application of certain zonal concepts can lead to misleading conclusions.

Reflection of the mid-Ludfordian Lau Event in conodont faunas of Bohemia

“…1D-F). Previous geological and paleontological studies of various stratigraphic intervals (Ludlow to Emsian) of the Požáry Quarries were undertaken by Bouček (1937), Chlupáč (1953Chlupáč ( , 1957, Chlupáč et al (1972), Barnett (1972), Kříž et al (1986), Vavrdová (1989), Manda (2003Manda ( , 2008, Slavík (2004a, b), Manda & Kříž (2006), Slavík et al (2007), Carls et al (2007), Lehnert et al (2007a), Koptí-ková et al (2010a, b), Slavík (in press) among others. The first detailed (bed-by-bed) study of the Ludlow-Přídolí interval was made by Kříž (1965, unpublished data).…”

“…Conodonts from different stratigraphical intervals of the Požáry Quarries were studied by Barnett (1972), Mehrtens & Barnett (1976), Schönlaub (in Chlupáč et al 1980 andin Kříž et al 1986), Weddige (in Chlupáč et al 1986), Slavík (2004aSlavík ( , 2004b, Slavík et al (2007) and Carls et al ( , 2007. As mentioned above, the most important contribution to the conodont knowledge of the Ludlow and Ludlow-Přídolí boundary interval at the Požáry section was done by Schönlaub who studied conodonts also from the corresponding levels in several other sections (e.g., Marble Quarry, Mušlovka Quarry and Hvížďalka).…”

Late Silurian (Ludlow) and Early Devonian (Pragian) conodonts from the Cobar Supergroup, western New South Wales, Australia

“…Calls for a revision of the global standard scheme for the Pragian (e.g. Slavík et al 2007) and also parts of the underlying Lochkovian (Valenzuela-Ríos & Murphy 1997, Valenzuela-Ríos et al 2015 have been prompted by a combination of new data from European and North American sequences and proposed revisions of conodont systematics.…”

Correlation of Early Devonian (Lochkovian-early Pragian) conodont faunas of the South Urals (Russia)

“…Therefore, the inter-regional conodont correlation of Lower Devonian shallow-water environments is mostly based on icriodontids -genera Icriodus, Pelekysgnathus or Pedavis (cf. Slavík et al 2007, Drygant & Szaniawski 2012.…”