Geier, Christian; Bouchal, Johannes M.; Ulrich, Silvia; Uhl, Dieter; Wappler, Torsten et al. [..] (2024) Potential pollinators and paleoecological aspects of Eocene Ludwigia (Onagraceae) from Eckfeld, Germany. Palaeoworld, Bd. 33 (4), S. 1079–1104.
Sutthinon, Pornsawan; Meesawat, Upatham; Ulrich, Silvia; Schönenberger, Jürg (2024) Histochemical and ultrastructural analysis of tapetum and sporoderm development in relation to precocious pollenkitt production of Garcinia dulcis (Roxb.) Kurz. Protoplasma.
Wuttke, Michael; Poschmann, Markus J.; Wappler, Torsten; Bouchal, Johannes M.; Geier, Christian et al. [..] (2024) Pollen-feeding in a giant pelobatid tadpole from the late Oligocene of Enspel, Germany. Palaeobiodiversity and Palaeoenvironments.
Heiss, Andreas G.; Defant, Sarah; Festi, Daniela; Galik, Alfred; Jakobitsch, Thorsten et al. [..] (2024) Mensch-Umwelt-Verhältnis in historischen Gesellschaften | Environment and Human Impact in Historical Societies. Österreichisches Archäologisches Institut Jahresbericht | Austrian Archaeological Institute Annual Report (2023), S. 129–139.
Geier, Christian; Engel, Michael S.; Bouchal, Johannes M.; Ulrich, Silvia; Grímsson, Friðgeir et al. [..] (2024) The earliest large carpenter bee (Xylocopa) and its adhering pollen (Araliaceae, Theaceae). Palaeobiodiversity and Palaeoenvironments.
Geier, Christian; Bouchal, Johannes M.; Ulrich, Silvia; Uhl, Dieter; Wappler, Torsten et al. [..] (2024) Collecting in situ/adhered pollen from fossil compressed angiosperm flowers. Plants, Bd. 13 (8).
Ulrich, Silvia; Vieira, Manuel; Coiro, Mario; Bouchal, Johannes M.; Geier, Christian et al. [..] (2024) Origin and Early Evolution of Hydrocharitaceae and the Ancestral Role of Stratiotes. Plants, Bd. 13 (7).
Vieira, Manuel; Bouchal, Johannes M.; Geier, Christian; Ulrich, Silvia; Zetter, Reinhard et al. [..] (2023) Earliest fossil pollen records of endemic African Sclerosperma palms and the palaeoecological aspects of the genus. Review of Palaeobotany and Palynology, Bd. 317, S. 104954.
Geier, Christian; Bouchal, Johannes M.; Ulrich, Silvia; Uhl, Dieter; Wappler, Torsten et al. [..] (2023) Potential pollinators and paleoecological aspects of Eocene Ludwigia (Onagraceae) from Eckfeld, Germany. Palaeoworld.
Geier, Christian; Bouchal, Johannes M.; Ulrich, Silvia; Uhl, Dieter; Wappler, Torsten et al. [..] (2023) Collecting in situ/adhered pollen from fossil compressed angiosperm flowers. Review of Palaeobotany and Palynology, Bd. 310, S. 104831.
Geier, Christian; Bouchal, Johannes M.; Ulrich, Silvia; Gross, Martin; Zetter, Reinhard et al. [..] (2022) Paleovegetation and paleoclimate inferences of the early late Sarmatian palynoflora from the Gleisdorf Fm. at Gratkorn, Styria, Austria. Review of Palaeobotany and Palynology, Bd. 307, S. 104767.