C Coiffard1, B Gomez, F Thevenard. 1. UCB Lyon 1 et UMR 5125, Paléobotanique, 7 rue Dubois, F-69622 Villeurbanne, France.
Abstract
BACKGROUND AND AIMS: At the beginning of the Late Cretaceous, angiosperms already inhabited all the environments and overtopped previously gymnosperm-dominated floras, especially in disturbed freshwater-related environments. The aim of this paper is to define what fossil plant ecology occurred during the early Cretaceous in order to follow the early spread of angiosperm taxa. METHODS: Floristic lists and localities from the Barremian to the Albian of Europe are analysed with the Wagner's Parsimony Method. KEY RESULTS: The Wagner's Parsimony Method indicates that (a) during the Barremian, matoniaceous ferns formed a savannah-like vegetation, while angiosperms composed freshwater aquatic vegetation; (b) during the Late Aptian humid phase, conifers increased, while matoniaceous ferns decreased, reflecting the closure of the vegetation; and (c) from the Albian, warmer and drier conditions induced the recovery of the matoniaceous ferns, while core angiosperms first developed in floodplains. CONCLUSIONS: During the late Early Cretaceous (Barremian-Albian), angiosperms showed a stepwise widening of their ecological range, being recorded first during the Barremian as aquatic plant mega-remains and at the Cenomanian onwards occurred in all the environments.
BACKGROUND AND AIMS: At the beginning of the Late Cretaceous, angiosperms already inhabited all the environments and overtopped previously gymnosperm-dominated floras, especially in disturbed freshwater-related environments. The aim of this paper is to define what fossil plant ecology occurred during the early Cretaceous in order to follow the early spread of angiosperm taxa. METHODS: Floristic lists and localities from the Barremian to the Albian of Europe are analysed with the Wagner's Parsimony Method. KEY RESULTS: The Wagner's Parsimony Method indicates that (a) during the Barremian, matoniaceous ferns formed a savannah-like vegetation, while angiosperms composed freshwater aquatic vegetation; (b) during the Late Aptian humid phase, conifers increased, while matoniaceous ferns decreased, reflecting the closure of the vegetation; and (c) from the Albian, warmer and drier conditions induced the recovery of the matoniaceous ferns, while core angiosperms first developed in floodplains. CONCLUSIONS: During the late Early Cretaceous (Barremian-Albian), angiosperms showed a stepwise widening of their ecological range, being recorded first during the Barremian as aquatic plant mega-remains and at the Cenomanian onwards occurred in all the environments.
Authors: Clément Coiffard; Bernard Gomez; Véronique Daviero-Gomez; David L Dilcher Journal: Proc Natl Acad Sci U S A Date: 2012-12-04 Impact factor: 11.205
Authors: Romain Vullo; Jesús Marugán-Lobón; Alexander W A Kellner; Angela D Buscalioni; Bernard Gomez; Montserrat de la Fuente; José J Moratalla Journal: PLoS One Date: 2012-07-03 Impact factor: 3.240
Authors: Jorge Fernando Genise; Eduardo S Bellosi; Laura C Sarzetti; J Marcelo Krause; Pablo A Dinghi; M Victoria Sánchez; A Martín Umazano; Pablo Puerta; Liliana F Cantil; Brian R Jicha Journal: PLoS One Date: 2020-01-29 Impact factor: 3.240