Publications

Authors: Barbara Meller, Reinhard Zetter, Andreas Hassler, Johannes M. Bouchal , Christa-Charlotte Hofmann, Friðgeir Grímsson A new locality, at Schaßbach (Carinthia, Austria), within the Neogene Lavanttal Basin has yielded numerous well preserved early Badenian (Langhian) plant macrofossils. This paper, which is the first in a series of papers that describe the macrofossil remains from Schaßbach, [...]

Authors: Torsten Wappler, Conrad C. Labandeira, Michael S. Engel, Reinhard Zetter, Friðgeir Grímsson Iconic examples of insect pollination have emphasized narrowly specialized pollinator mutualisms such as figs and fig wasps and yuccas and yucca moths. However, recent attention by pollination ecologists has focused on the broad spectra of pollinated plants by generalist pollinators such as [...]

Authors: Steven R. Manchester, Friðgeir Grímsson, Reinhard Zetter The fossil record provides good evidence for the minimum ages of important events in the diversification and geographic spread of Asteridae, with earliest examples extending back to the Turonian stage of the Late Cretaceous (~89 million years ago [Ma]). Some of the fossil identifications accepted in previous considerations of [...]

Authors: Friðgeir Grímsson, Barbara Meller, Johannes M. Bouchal, Reinhard Zetter. Previous studies on the palynoflora from the Lavanttal Basin show that it contains a rich assemblage of spores and gymnosperm pollen. Present and ongoing investigations of dispersed angiosperm pollen suggest a high diversity within this group, and due to the excellent preservation of the material, [...]

Authors: Oliver Béthoux, Boris Kondratieff, Friðgeir Grímsson, Erling Ólafsson, Torsten Wappler In order to accommodate a newly discovered fossil specimen related to a subset of extant needle stoneflies (Leuctridae sensu Zwick, 2000), we provide a comparative analysis of the wing venation of these insects, and of their close relatives, primarily based on extant material. A [...]

Authors: Friðgeir Grímsson, Reinhard Zetter, Guido W. Grimm, Gunver Krarup Pedersen, Asger Ken Pedersen, Thomas Denk In this paper we document Fagaceae pollen from the Eocene of western Greenland. The pollen record suggests a remarkable diversity of the family in the early Cenozoic of Greenland. Extinct Fagaceae pollen types include Eotrigonobalanus, which extends at least back to [...]

Authors: Johannes M. Bouchal, Reinhard Zetter, Friðgeir Grímsson, Thomas Denk The early Cenozoic was a key period of evolutionary radiation in Fagaceae. The common notion is that species thriving in the modern summer-dry climate of California originated in climates with ample summer rain during the Paleogene. We investigated in situ and dispersed pollen of Fagaceae [...]

Authors: Torsten Wappler, Friðgeir Grímsson, Bo Wang, André Nel, Erling Ólafsson, Alexey A. Kotov, Steven R. Davis, Michael S. Engel Well-preserved arthropods are reported from Miocene sedimentary rocks of the Skarðsströnd–Mókollsdalur (9–8 Ma) and Hreðavatn–Stafholt (7–6 Ma) Formations in Iceland. Fossil remains of terrestrial and/or freshwater animals have rarely been reported from the island before. Here [...]

Authors: Friðgeir Grímsson, Reinhard Zetter, Heidemarie Halbritter, Guido W. Grimm The fossil record of Aponogeton (Aponogetonaceae) is scarce and the few reported macrofossil findings are in need of taxonomic revision. Aponogeton pollen is highly diagnostic and when studied with light microscopy (LM) and scanning electron microscopy (SEM) it cannot be confused with any other pollen types. [...]

Authors: Thomas Denk , Guido W. Grimm , Friðgeir Grímsson, Reinhard Zetter. Shallowing of the Panama Sill and the closure of the Central American Seaway initiated the modern Loop Current–Gulf Stream circulation pattern during the Miocene, but no direct evidence has yet been provided for effective heat transport to the northern North Atlantic during that time. [...]