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标题：Generalist Pollen-Feeding Beetles during the Mid-Cretaceous
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作者：David Peris ; Conrad C. Labandeira ; Eduardo Barrón 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2020
卷号：23
期号：3
页码：1-23
DOI：10.1016/j.isci.2020.100913
语种：English
出版社：Elsevier
摘要：SummaryThe Cretaceous fossil record of amber provides a variety of evidence that is essential for greater understanding of early pollination strategies. Here, we describe four pieces of ca. 99-million-year-old (early Cenomanian) Myanmar amber from Kachin containing four closely related genera of short-winged flower beetles (Coleoptera: Kateretidae) associated with abundant pollen grains identified as three distinct palynomorphotypes of the gymnospermCycadopitesandPraenymphaeapollenites cenomaniensisgen. and sp. nov., a form-taxon of pollen from a basal angiosperm lineage of water lilies (Nymphaeales: Nymphaeaceae). We demonstrate how a gymnosperm to angiosperm plant-host shift occurred during the mid-Cretaceous, from a generalist pollen-feeding family of beetles, which served as a driving mechanism for the subsequent success of flowering plants.Graphical AbstractDisplay OmittedHighlights•A gymnosperm to angiosperm plant-host shift is denoted during the mid-Cretaceous•Kateretidae beetles are among the earliest pollinators of angiosperms•Mesozoic direct evidences of angiosperm pollination just started to arise•Praenymphaeapollenitesis defined as a new angiosperm pollen morphotypeBiological Sciences; Evolutionary Biology; Evolutionary Ecology; Paleobiology