Margaret E. Collinson

TL;DR: In this article, Collinson et al. place the Palaeogene fruit and seed floras in a clear stratigraphic framework, following from recognition of contemporaneous floras from different depositional environments and their geographic framework, and new knowledge of floras and their sedimentary and bio-facies from bulk sampling.

TL;DR: Low vacuum scanning electron microscopy on uncoated specimens with backscatter detector and synchrotron radiation X-ray tomographic microscopy utilizing the Materials Science and TOMCAT beamlines at the Swiss Light Source of the Paul Scherrer Institut improve upon traditional cellulose acetate peel sectioning and contribute to understanding of the former diversity and evolution of ovules, seeds, and pollen organs in the seed ferns.

TL;DR: Investigation of Danish occurrences known from the Lillebaelt Clay Formation finds that multiple morphological and ultrastructural characters distinguish the Danish Azolla species from Azolla arctica and it appears that not a singleAzolla species has spread from the Arctic to the Southern North Sea either through freshwater spills from the Polar Ocean or as a result of rapid spread due to highly invasive biology.

TL;DR: This material represents the first fossil fruits and seeds of Cyclanthus, which clearly was once growing in the Paleogene of the Old World and is another example of links between Eocene Europe and Recent South American floras.

TL;DR: In this article, a sharp morphological shift occurring within the genus Harrisichara between the Headon Hill Formation and the Bembridge Limestone Formation was found to be a functional response to changing global climate and the associated increase in seasonality.