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author1Marco A. Rubalcava-Knoth. Posgrado en Ciencias Biológicas, Instituto de Geología, UNAM; Ciudad Universitaria, Circuito de la Investigación Científica, Copilco El Alto, Coyoacán; 04510 México D.F., México.

Marco Antonio Rubalcava-Knoth is a PhD student in paleobotany at the Universidad Nacional Autónoma de México. He studied Biology in the Science Faculty of the Universidad Nacional Autónoma de México (UNAM) (Cenozoic climate in central Mexico) and proceeded to study his M.Sc in Paleobotany (Cretaceous leaves) at the same University. His PhD research focuses on the description and identification of Lauraceous leaves in Mexico.

 

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author2Sergio R.S. Cevallos-Ferriz. Departamento de Paleontología, Instituto de Geología, UNAM; Ciudad Universitaria, Circuito de la Investigación Científica, Copilco El Alto, Coyoacán; 04510 México D.F., México.  

Sergio RS Cevallos-Ferriz studied Biology in the Science Faculty of the Universidad Nacional Autónoma de México (UNAM) and proceeded to graduate School in the University of Alberta, Canada, where he received the M.Sc. and Ph. D. degrees in Botany (Paleobotany). He described Precambrian stromatolites from NW Mexico (1978-1981) and Cretaceous angiosperm woods from Sonora and Coahuila in northern Mexico (1980-1984). Then he worked with permineralized material from the Middle Eocene Princeton Chert, British Columbia, Canada, describing seeds, fruits, flowers and woods (1984-1991). Since 1992 he reincorporated to the Instituto de Geología, UNAM, where the study of Mexican plant biodiversity trough time, based on fossils, has occupied his interest. During the last decades he has taught Paleobotany, Plant morphology and Paleobiology in the Science Faculty, and Graduate School, UNAM. He is a member of the National Researchers System (SNI).

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