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The Fezouata fossils of Morocco : an extraordinary record of marine life in the Early Ordovician Universiteit Gent
'Fossils' Universiteit Antwerpen
Finite element analysis (FEA) is a computational method used to predict the behaviour (stresses, strains and deformation) of a structure under predefined loading conditions. It can be applied to different biological structures, such as bone, to study defined muscle-driven scenarios. However, as muscle is an extremely complex structure to model, evolutionary biologists usually model muscle forces indirectly. In 2007, the BONELOAD MATLAB routine ...
New data on the late Neandertals: direct dating of the Belgian Spy fossils Universiteit Antwerpen
In Eurasia, the period between 40,000 and 30,000 BP saw the replacement of Neandertals by anatomically modern humans (AMH) during and after the Middle to Upper Paleolithic transition. The human fossil record for this period is very poorly defined with no overlap between Neandertals and AMH on the basis of direct dates. Four new 14C dates were obtained on the two adult Neandertals from Spy (Belgium). The results show that Neandertals survived to ...
Early Eocene fossils suggest that the mammalian order Perissodactyla originated in India Universiteit Gent
Cambaytheres (Cambaytherium, Nakusia and Kalitherium) are recently discovered early Eocene placental mammals from the Indo-Pakistan region. They have been assigned to either Perissodactyla (the clade including horses, tapirs and rhinos, which is a member of the superorder Laurasiatheria) or Anthracobunidae, an obscure family that has been variously considered artiodactyls or perissodactyls, but most recently placed at the base of Proboscidea or ...
Pinnularia borealis: disentangling the evolutionary history of a terrestrial diatom using genetics, fossils and ecophysiological data Universiteit Gent
Pinnularia borealis Ehrenberg is a terrestrial diatom, commonly found in moist soils and temporary freshwater habitats all over the world, including the (sub)Antarctic. Given the widespread (pseudo)cryptic species diversity in diatoms and the restricted distribution patterns of many (sub)Antarctic diatoms revealed by dedicated morphological studies, we asked whether Pinnularia borealis is indeed a single species and started reconstructing the ...
Disentangling the evolutionary history and biogeography of the diatoms in the polar regions: data from fossils and molecular phylogenies Universiteit Gent
Because of their immense diversity, the systematics of protists, and diatoms in particular, is complex and challenging. Since species taxonomy has far-reaching consequences for our understanding of diatom evolutionary history, ecology and biogeography, detailed studies into species limits and diversity are needed if we are to advance our understanding of the range dynamics and diversification of diatoms. However, the biogeography and ecology of ...
The formation of giant tubular concretions triggered by anaerobic oxidation of methane as revealed by archaeal molecular fossils (Lower Eocene, Varna, Bulgaria) KU Leuven
Impressive, several meters high tubular concretions in shallow marine calcareous sands and sandstones represent part of the well-exposed, subsurface plumbing network of an Early Eocene methane seep system in the Balkanides foreland (Pobiti Kamani area, Varna, NE Bulgaria). An integrated approach, including petrography, inorganic geochemistry and lipid biomarker analyses was used to reconstruct the evolution of pore fluids and cementation ...