Early Devonian (Lochkovian – early Emsian) bioevents and conodont response in the Prague Synform (Czech Republic)

Morphologically distinct P1 elements of Zieglerodina (Conodonta) at the Silurian- Devonian boundary: review and correlation

“…Since then, many biostratigraphic studies have been performed including the very detailed paleontological studies on trilobites by Chlupáč (1971Chlupáč ( , 1983; brachiopods by Havlíček & Štorch (1990), Havlíček (1999); bivalves by Kříž (1998Kříž ( , 1999; cephalopods by Manda (2001), Manda & Frýda (2010); gastropods by Frýda & Manda (1997); chitinozoa by Paris et al 1981, Fatka et al (2006, etc. ; conodonts by Barnett (1972), Mehrtens & Barnett (1976), Jeppsson (1988Jeppsson ( , 1989, Slavík (2004aSlavík ( ,b, 2011Slavík ( , 2017, Carls et al (2005Carls et al ( , 2007Carls et al ( , 2008, Slavík et al (2009Slavík et al ( , 2010, , Slavík & Hladil (2020); as well as sedimentological and geochemical studies by Hladil (1991Hladil ( , 1992, Crick et al, (2001), Frýda et al (2002), Buggisch & Mann (2004), Vacek (2007), Lehnert et al (2007), Vacek et al (2010, Koptíková et al (2010aKoptíková et al ( , 2010b, Manda & Frýda (2010), Munnecke et al (2011), Gocke et al (2012), andVacek et al (2018).…”

“…The entry of Icriodus was a global event. Slavík & Hladil (2020) introduced the Icriodus Event that represents the origin and rapid global dispersal of the genus. This should not be mistaken by the often misused Klonk Event by Jeppsson (1998) that has been recently misunderstood by Barrick et al (2021).…”

Endemic earliest Lochkovian species of Caudicriodus (conodont) from southern Laurentia and the Silurian–Devonian boundary

“…Both of the possible ancestral forms to Caudicriodus existed during the late Ludlow – Pridoli, well before the Lochkovian radiation of the genus. Slavík & Hladil (2020) proposed that their ‘ Icriodus Event’, the origin and radiation of icriodontids, occurred above the Silurian–Devonian boundary. We propose that this event started earlier.…”

“…2012; Slavík 2017; Vacek et al . 2018; Hušková & Slavík 2020; Slavík & Hladil 2020), Carnic Alps (Corradini & Corriga 2012; Corradini et al . 2015; Corriga et al .…”

“…(2015) questioned the reliability of C. woschmidti , as well as the use of shelly fossils and palynomorphs to recognize the base of the Devonian in sections in central China, and chose to rely more heavily on the signature of the δ 13 C org excursion, fixing the Silurian–Devonian boundary by direct curve matching with the data from the Klonk‐1 borehole and constrained by the available palaeontological data. Slavík & Hladil (2020) misinterpreted Jeppsson's (1989) definition of the Klonk Event as being tied to the first occurrence of Oulodus elegans detorta , whereas it is clear that Jeppsson indicated that the Klonk Event corresponds to the previously recognized Monograptus transgrediens extinction event that spanned the Silurian–Devonian boundary interval (Manda & Frýda 2010).…”