Please use this identifier to cite or link to this item: https://hdl.handle.net/10593/2387
Title: Mesozoic mass extinctions and angiosperm radiation: does the molecular clock tell something new?
Authors: Ruban, Dmitry A.
Keywords: Angiosperms
Radiation
Mass extinction
Molecular clock
Mesozoic
Issue Date: 2012
Publisher: Wydawnictwo Naukowe UAM
Citation: Geologos 18, 1 (2012): 37–42
Abstract: Angiosperms evolved rapidly in the late Mesozoic. Data from the genetic-based approach called ’molecular clock’ permit an evaluation of the radiation of flowering plants through geological time and of the possible influences of Me -sozoic mass extinctions. A total of 261 divergence ages of angiosperm families are considered. The radiation of flowe -ring plants peaked in the Albian, early Campanian, and Maastrichtian. From the three late Mesozoic mass extinctions (Jurassic/Cretaceous, Cenomanian/Turonian, and Cretaceous/Palaeogene), only the Cretaceous/Palaeogene event coincided with a significant, abrupt, and long-term decline in angiosperm radiation. If their link will be further pro -ven, this means that global-scale environmental perturbation precluded from many innovations in the development of plants. This decline was, however, not unprecedented in the history of the angiosperms. The implication of data from the molecular clock for evolutionary reconstructions is limited, primarily because this approach deals with only extant lineages.
URI: http://hdl.handle.net/10593/2387
ISSN: 1426-8981
Appears in Collections:Geologos, 2012, 18, 1

Files in This Item:
File Description SizeFormat 
Geologos-18-1-Ruban.pdf396.84 kBAdobe PDFView/Open
Show full item record



Items in AMUR are protected by copyright, with all rights reserved, unless otherwise indicated.