Antoine Bercovici,^1,*,** Vivi Vajda,^1,*** Dean Pearson,^2,**** Uxue Villanueva-Amadoz,^3,4,***** Doug Kline<sup>5,******

1</sup>aDepartment of Geology, Lund University, Sölvegatan 12, SE-223 62, Lund, Sweden
²bPioneer Trails Regional Museum, Paleontology Department, 12 First Ave. NE, Bowman, ND 58623, USA
³cDepartamento de Paleontología, Instituti de Geología, UNAM, Ciudad Universitaria, 04510, México DF
⁴dDepartamento Ciencias de la Tierra (Paleontologia), Universidad de Zaragoza, C/Pedro Cerbuna, 12, 5
⁵eDenver Museum of Nature and Science, 2001 Colorado Boulevard, Denver, CO 80205, USA

^*Corresponding author. Email: antoine.bercovici@geol.lu.se
^**Antoine Bercovici is a paleobotanist and sedimentologist currently in postdoctoral fellowship at Lund University (Sweden). His main interest lies in the study of paleoecosystem response to mass extinction events. His ongoing research focuses on the K—Pg Boundary in the Northern Great Plains (USA) using paleoenvironment reconstruction as an independent way to discuss biostratigraphical patterns and trends. Additionally, he has performed extensive work on the end-Permian in western Europe integrating the relationship between continental sedimentation, plant cover and topography to reconstruct the evolution of paleoenvironments and climate preceding the mass extinction event.
^***Vivi Vajda is a palynologist and professor in paleontology at Lund University, Sweden. Her research, funded by the Royal Swedish Academy of Sciences, aims to determine the rate of turnover of plants at the K—Pg boundary. Investigations focus on sediments from New Zealand, Campbell Island, Bolivia and Denmark. She has also used the palyno-signal from the K—Pg boundary as a tool to interpret other mass-extinction events, e.g. the Triassic—Jurassic event. She is active in international geo-related organizations, chair of the UNESCO sciences program IGCP, chair of the Swedish Geological Society and she received the Geologist of the Year award in Sweden 2010.
^****Dean A. Pearson has been an avocational paleontologist for the past 27 years and is curator of Paleontology at the Pioneer Trails Regional Museum in Bowman, ND. He is primarily interested in paleoenvironmental and ecological studies and how they relate to the K—Pg boundary. He is a former recipient of the Paleontological Society Harrel Strimple Award and Research Associate with the Denver Museum.
^*****Uxue Villanueva-Amadoz is a paleopalynologist with a postdoctoral position at the Institute of Geology of the Universidad Nacional Autónoma de México (UNAM). Her research focuses on the floral evolution during the Mid- and Upper Cretaceous in Mexico. She has also been working on the Mid-Cretaceous palynostratigraphy of continental deposits of the Iberian Chain and shallow platform of the Basque—Cantabrian Basin in northeastern Spain.
^******Doug Kline is a Palynology Researcher at the Denver Museum and Science. His main interests lie in the resolution of the K—Pg boundary sections in the Denver Basin and regional correlations of Momipites and Caryapollenites species and their utility as Paleocene marker species. Douglas J. Nichols introduced Doug Kline to palynology and was his teacher, mentor, friend and father figure.