Vorsitzende der Sitzung
Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotany
- Carole Gee (University of Bonn)
- Lutz Kunzmann
Beschreibung
Understanding the taphonomic processes acting on plants is integral to paleobotanical and palynological studies. Biostratinomy is the study of all the physical, chemical, and biological filters that affect plants and plant parts, from the moment of death and abscission, through transport and deposition, to decay and early chemical changes. Fossil diagenesis, on the other hand, traces the geochemical and physical changes of the plant remains in the sediment that led to fossilization. Actuopalaeobotany approaches the topic from the opposite direction by observing taphonomic processes on extant plants, plant parts, and extant assemblages, as modern analogues. This symposium welcomes all studies on plant taphonomy. In addition to the accurate identification of plants in a fossil assemblage, the elucidation of taphonomic processes leading to the origin of the fossiliferous deposit is prerequisite for reliable plant-based palaeoecological, paleoenvironmental, and paleoclimatic reconstructions.
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Robert Gastaldo (Colby College)22.09.26, 16:00Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
Plant macrofossil-preservation potential (PMPP) is restricted to a limited number of depositional environments (EOD). In turn, the record’s quantity and quality are dictated by biological and geochemical factors operating therein. Outcrops present a continental stratigraphy of stacked, laterally contiguous landscapes. Each overlying landscape has similar, but spatially offset, EODs. Their...
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Alexander R. Schmidt22.09.26, 16:15Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
Lichens are generally very rare in the fossil record. Baltic and Bitterfeld ambers are notable exceptions, with hundreds of specimens discovered to date. The fact that the tree resin preserved lichens and associated organisms lifelike in their microhabitats provides reliable insights into structure and composition of Paleogene lichen communities and their interactions with other organisms. The...
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Josephine Franke (Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science; Freie Universität Berlin, Institute of Biology)22.09.26, 16:30Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
Late Eocene Baltic amber represents the largest amber deposit worldwide. It has been studied for centuries, but plant inclusions are comparatively scarce and the angiosperm diversity of the Baltic amber source area is still insufficiently understood for a holistic reconstruction of the amber forest. Here we describe three well-preserved flowers analyzed with high-resolution X-ray tomography...
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Carlos Góis-Marques (Madeira Botanical Group (GBM), Faculdade de Ciências da Vida, Universidade da Madeira, Funchal, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal; CIBIO, InBIO Laboratório Associado, Universidade dos Açores, Ponta Delgada, Portugal; Instituto Dom Luiz (IDL), Laboratório Associado, Universidade de Lisboa, Lisboa, Portugal)22.09.26, 16:45Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
Worldwide, oceanic islands are known to harbour unique floras and vegetation types. Within Macaronesian archipelagos, one of the most emblematic ecosystems are the evergreen broad-leaved Laurel forests. These were, since the mid-19th century, based on an extensive continental fossil record, considered an impoverished relict of extinct taxa that once occurred during the Cenozoic of Europe. This...
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Thomas Denk (Naturhistoriska riksmuseet)22.09.26, 17:00Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
A major global cooling during the Middle Miocene Climate Transition, ~ 14–13 million years ago (Ma) marked the beginning of a shift between Earth’s coolhouse and icehouse states. During this time, much of Central and Southern Europe was covered by a northward extension of the Mediterranean Sea, the Central Paratethys. Remarkably, the Middle Miocene (~ 12.7–12.1 Ma) Lagerstätte of Radoboj from...
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Asude Demir22.09.26, 17:15Embracing plant taphonomy: Biostratinomy, diagenesis and actuopalaeobotanyTalk
Leaf epicuticular waxes form the outermost protective layer of leaves and reflect adaptations to environmental conditions. Their morphology and chemistry is usually not well preserved in the fossil record but can be under specific circumstances, providing information for paleoclimate reconstruction and taphonomic histories of leaves in lignites. Whitish fossil layers on Eocene leaves have been...
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