Contribution
Uppermost Ordovician to lowermost Devonian conodonts from the Valentintörl section and comments on the post Hirnantian hiatus in the Carnic Alps
Corriga, Maria Giovanna; Corradini, Carlo; Pondrelli, Monica; Schönlaub, Hans-Peter; Nozzi, Lorenzo; Todesco, Rossana; Ferretti, Annalisa
Newsletters on Stratigraphy Volume 54 Number 2 (2021), p. 183 - 207
publié: Apr 9, 2021
publication en ligne: Sep 4, 2020
manuscrit accepté: Jul 7, 2020
révision final du manuscrit reçu: Jul 6, 2020
révision du manuscrit demandée: Jun 16, 2020
manuscrit reçu: Apr 24, 2020
ArtNo. ESP026005402002, Prix: 29.00 €
Abstract
A detailed biostratigraphic investigation has been carried out by means of conodonts in the uppermost Ordovician-lowermost Devonian sector of the Valentintörl cliff, located in the Austrian part of the Carnic Alps. Biostratigraphic data document in continuity all conodont biozones from the lowermost Ludlow to the upper Přídolí, with such a limited thickness to suggest that the Valentintörl section exposes the most condensed upper Silurian section in the Carnic Alps documented so far. A general discussion on the extension of the hiatus between Ordovician and Silurian sequences in the Carnic Alps is presented. Three new conodont species belonging to genera Cuspigrandiosa, Wurmiella and Zieglerodina are described, but left in open nomenclature awaiting more specimens to be collected.
Mots-clefs
Palaeozoic • biostratigraphy • chronostratigraphy • systematic palaeontology • stratigraphic hiatus