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Internal Details Corroborate the Occurrence of Flower Bud in the Lower Cretaceous of China
Version 1
: Received: 5 April 2024 / Approved: 5 April 2024 / Online: 5 April 2024 (11:00:01 CEST)
How to cite: Huang, W.; Wang, X. Internal Details Corroborate the Occurrence of Flower Bud in the Lower Cretaceous of China. Preprints 2024, 2024040419. https://doi.org/10.20944/preprints202404.0419.v1 Huang, W.; Wang, X. Internal Details Corroborate the Occurrence of Flower Bud in the Lower Cretaceous of China. Preprints 2024, 2024040419. https://doi.org/10.20944/preprints202404.0419.v1
Abstract
The Yixian Formation (Lower Cretaceous) of China is famous worldwide for its fossils of early angio-sperms, but there is only one record of flower bud hitherto. A previous fossil record of flower bud just showed the appearance and lacked any internal details. Such a lacuna in knowledge of flower buds hin-ders our understanding of the evolution of flowers. Our new specimen was collected from an outcrop of the Yixian Formation (the Barremian-Aptian, Lower Cretaceous) near Dawangzhangzi, Lingyuan, Liao-ning, China. The specimen was observed and photographed using a Sony ILCE-7 digital camera and a Nikon SMZ1500 stereomicroscope, and details were observed using a TESCAN MAIA3 SEM. Our ob-servations document a fossil flower bud, Archaebuda cretaca sp. nov, from the Lower Cretaceous of China. The occurrence of two species of Archaebuda in the Yixian Formation not only confirms the ex-istence of the expected gynoecium (and possible androecium) in a flower bud, but also underscores the occurrence of typical flowers in the Early Cretaceous.
Keywords
fossil; Lower Cretaceous; China; angiosperms; flower; bud
Subject
Biology and Life Sciences, Plant Sciences
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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