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So far Grimur Grimsson has created 58 blog entries.

Taxonomic description of in situ bee pollen from the middle Eocene of Germany – 2017

Authors: Friðgeir Grímsson, Reinhard Zetter, Conrad C. Labandeira, Michael S. Engel, Torsten Wappler The middle Eocene Messel and Eckfeld localities are renowned for their excellently preserved faunas and diverse floras. Here we describe for the first time pollen from insect-pollinated plants found in situ on well-preserved ancient bees using light and scanning electron microscopy. There [...]

By | January 18th, 2017|Publications|0 Comments

Cretaceous and Paleogene Fagaceae from North America and Greenland: evidence for a Late Cretaceous split between Fagus and the remaining Fagaceae -2016

Authors: Friðgeir Grímsson, Guido W. Grimm, Reinhard Zetter, Thomas Denk Modern lineages of the beech family, Fagaceae, one of the most important north-temperate families of woody flowering plants, have been traced back to the early Eocene. In contrast, molecular differentiation patterns indicate that the Fagus lineage, Fagoideae, with a single modern genus, evolved much earlier [...]

By | December 5th, 2016|Publications|0 Comments

A revised stratigraphy for the Palaeocene Agatdalen flora (Nuussuaq Peninsula, western Greenland): correlating fossiliferous outcrops, macrofossils, and palynological samples from phosphoritic nodules – 2016

Authors: Friðgeir Grímsson, Gunver Krarup Pedersen, Guido W. Grimm, Reinhard Zetter The Cretaceous and Palaeogene floras of western Greenland that were initially described as part of the classical work “Flora fossilis arctica” by Oswald Heer in the 19th century are currently under revision. The Nuussuaq Basin has repeatedly been investigated by geologists and marine invertebrate [...]

By | December 3rd, 2016|Publications|0 Comments

The middle Miocene palynoflora and palaeoenvironments of Eskihisar (Yatağan basin, south- western Anatolia): a combined LM and SEM investigation – 2016

Authors: Johannes M. Bouchal, Reinhard Zetter, Friðgeir Grímsson, Thomas Denk We investigated a palynological section from middle Miocene sediments at Eskihisar (south-western Anatolia) to establish biogeographic links of the palynoflora and to infer the palaeoenvironment. Four algal palynomorphs, nine spore taxa, eight gymnosperms, three monocots and 67 dicot pollen types were encountered and investigated using [...]

By | September 17th, 2016|Publications|0 Comments

Before the ‘Big Chill’: Patterns of plant-insect associations from the Neogene of Iceland – 2016

Authors: Torsten Wappler, Friðgeir Grímsson Iceland is the only known terrestrial place in the subarctic North Atlantic providing a fairly continuous sedimentary and plant fossil record over the past 15 million years. While the basic palaeobotanical framework of this pattern has been well established during the last decade, less attention has been paid to the [...]

By | July 25th, 2016|Publications|0 Comments

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2 – Fagales to Rosales – 2016

Authors: Friðgeir Grímsson, Guido W. Grimm, Barbara Meller, Johannes M. Bouchal, Reinhard Zetter. An ongoing investigation of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin continues to show that it contains an extremely rich assemblage of angiosperm taxa. The Fagales to Rosales pollen record documented here contains 34 different taxa belonging to the Betulaceae [...]

By | January 24th, 2016|Publications|0 Comments

Middle Miocene macrofloral elements from the Lavanttal Basin, Austria, Part I. Ginkgo adiantoides (Unger) Heer – 2015

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, [...]

By | December 10th, 2015|Publications|0 Comments

Specialized and generalized pollen-collection strategies in an ancient bee lineage – 2015

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 [...]

By | December 7th, 2015|Publications|0 Comments

Assessing the fossil record of asterids in the context of our current phylogenetic framework – 2015

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 [...]

By | August 24th, 2015|Publications|0 Comments

Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part III. Magnoliophyta 1 – Magnoliales to Fabales – 2015

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, [...]

By | April 24th, 2015|Publications|0 Comments