F. Grímsson

Publications86
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Citations1,248
Highly Influential Citations74
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Episodic migration of oaks to Iceland: Evidence for a North Atlantic "land bridge" in the latest Miocene.
Dating the subsidence history of the North Atlantic Land Bridge (NALB) is crucial for understanding intercontinental disjunctions of northern temperate trees. Traditionally, the NALB has been assumed…
Late Cainozoic Floras of Iceland
Taxonomy and palaeoecology of two widespread western Eurasian Neogene sclerophyllous oak species: Quercus drymeja Unger and Q. mediterranea Unger
TLDR
Quercus mediterranea, although readily recognizable as a distinct morphotype in early to late Miocene plant assemblages, may in fact represent small leaves of the same plants that constitute the Quercus drymeja complex.
Lythrum and Peplis from the Late Cretaceous and Cenozoic of North America and Eurasia: new evidence suggesting early diversification within the Lythraceae.
TLDR
The findings add vital information for the time of origin of the Lythraceae and suggest a higher diversity within the family, and indicate that the distribution of particular genera during the Cretaceous was wider than previously thought.
The Miocene floras of Iceland and their significance for late Cainozoic North Atlantic biogeography
TLDR
The main finding is that the Miocene flora of Iceland belongs to a widespread Neogene northern hemispheric floral type including plants whose representatives are restricted to East Asia, North America and to western Eurasia at the present time.
Floristic turnover in Iceland from 15 to 6 Ma – extracting biogeographical signals from fossil floral assemblages
TLDR
The composition of floras and dispersal mechanisms indicate that Iceland was connected both to Greenland and to Europe in the early Middle Miocene, allowing transcontinental migration and the extinction of thermophilous taxa.
Cretaceous and Paleogene Fagaceae from North America and Greenland: evidence for a Late Cretaceous split between Fagus and the remaining Fagaceae
Abstract 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…
Middle miocene floras of Iceland - the early colonization of an island?
Abstract Two macrofloras, 15 and 13.5 Ma old, are described from the oldest exposed plant bearing sediments on Iceland. Many of the taxa are mentioned for the first time and a lime tree, Tilia…
The Biogeographic History of Iceland – The North Atlantic Land Bridge Revisited
Plants lacking long distance dispersal mechanisms required a functioning land bridge to colonize Iceland, a route provided by the North Atlantic Land Bridge (NALB). During the Cainozoic, the NALB,…
Fagaceae pollen from the early Cenozoic of West Greenland: revisiting Engler’s and Chaney’s Arcto-Tertiary hypotheses
TLDR
Comparison with coeval or older mid-latitude records of modern lineages of Fagaceae shows thatmodern lineages found in western Greenland and Axel Heiberg likely originated at lower latitudes, corroborate earlier findings that Fag growers were a dominant element at high latitudes during the early Cenozoic.
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