Quantitative analysis of planktonic foraminifera across the Cretaceous-Paleogene transition and observations on the extinction horizon, Haymana Basin, Turkey

Vesiculation in the dinoflagellate cyst Cannosphaeropsis franciscana Damassa, 1979 across the K/Pg boundary (Vancouver Island, Canada) with implications for spiniferate gonyaulacacean taxonomy and ecophenotypy

“…The latest Maastrichtian is also characterized by a period of general stability in the calcareous dinoflagellate cyst assemblages from other oceanic localities such as DSDP sites 356 and 357 in the western South Atlantic (Thierstein, 1981;Hildebrand-Habel et al, 1999;Hildebraiid-Habel and Willems, 2000). The most characteristic change among these assemblages is elevated relative abundances of Cervisiella operculata beginning in the latest Maastrichtian (e.g., Thierstein, 1981;Hildebrand-Habel et al, 1999;Hildebraiid-Habel and Willems, 2000;Egger et al, 2009) and peaking above the K/Pg boundary as has been observed beyond the Pacific from the U.S. Gulf Coast (Jiang and Gartner, 1986), Haiti (Keller et al, 2001), Argentina (Scasso et al, 2005;del Río et al, 2011;Guerra et al, 2021), Spain (Romein, 1977;Lamolda et al, 2005Lamolda et al, , 2016, France (Peybernés et al, 1996;Rodríguez-Tovar et al, 2010), Austria (Egger et al, 2009;, Turkey (Kaya Ozer, 2014;Karabeyoğlu et al, 2019), Israel (Eshet et al, 1992), Egypt (e.g., Faris and Farouk, 2012;Kasem et al, 2017;Khozyem et al, 2019), Iraq (Kharajiany et al, 2019(Kharajiany et al, , 2020Al-Qayim et al, 2020), Iran (e.g., Parandavar et al, 2013;Asgharian Rostami et al, 2018;Mahanipour et al, 2021), equatorial Atlantic (Perch-Nielsen, 1977, South Atlantic (Hildebrand-Habel et al, 1999;Hildebraiid-Habel and Willems, 2000;…”