The Devonian–Carboniferous Boundary (DCB) was defined in the section La Serre trench E’ (Montagne Noire, France) at the base of bed 89. The criterion chosen for its definition was entry of the conodont Siphonodella sulcata. The GSSP was accepted and ratified by the International Union of Geological Sciences (IUGS) in 1990 (PAPROTH et al. 1991). Difficulties soon arose in precise biostratigraphic correlation of the Global Boundary Stratotype Section and Point (GSSP) caused by problems in recognizing the First Appearance Datum of its marker, and, specifically, in discriminating Si. sulcata from its presumed ancestor Si. praesulcata. At the September 2007 Subcommission on Devonian Stratigraphy (SDS) meeting in Eureka, Nevada, on the base on new and recent studies on the La Serre fauna (KAISER 2005, later extended in KAISER 2009) it was proposed that the time had come for a task force to re-evaluate and possible redefine the boundary.
Methods in taxonomy and biostratigraphy, and some note on chronostratigraphy: the Devonian–Carboniferous Boundary / Spalletta C.; Corradini C.; Kaiser S.; Matyja H.; Over D.J.; Perri M.C.. - In: NEWSLETTER-INTERNATIONAL UNION OF GEOLOGICAL SCIENCES, COMMISSION ON STRATIGRAPHY, SUBCOMMISSION ON DEVONIAN STRATIGRAPHY. - ISSN 2074-7268. - STAMPA. - 26:(2011), pp. 30-33.
Methods in taxonomy and biostratigraphy, and some note on chronostratigraphy: the Devonian–Carboniferous Boundary.
SPALLETTA, CLAUDIA;PERRI, MARIA CRISTINA
2011
Abstract
The Devonian–Carboniferous Boundary (DCB) was defined in the section La Serre trench E’ (Montagne Noire, France) at the base of bed 89. The criterion chosen for its definition was entry of the conodont Siphonodella sulcata. The GSSP was accepted and ratified by the International Union of Geological Sciences (IUGS) in 1990 (PAPROTH et al. 1991). Difficulties soon arose in precise biostratigraphic correlation of the Global Boundary Stratotype Section and Point (GSSP) caused by problems in recognizing the First Appearance Datum of its marker, and, specifically, in discriminating Si. sulcata from its presumed ancestor Si. praesulcata. At the September 2007 Subcommission on Devonian Stratigraphy (SDS) meeting in Eureka, Nevada, on the base on new and recent studies on the La Serre fauna (KAISER 2005, later extended in KAISER 2009) it was proposed that the time had come for a task force to re-evaluate and possible redefine the boundary.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
