Abstract The Silurian–Devonian Boundary (SDB) was the first Global Stratotype Section and
Point (GSSP) to be established. Extensive and well-preserved SDB strata are found in …

A database of all reported Ordovician–Silurian land plant megafossil and dispersed spore
assemblages has been assembled. For each assemblage a list of taxa has been prepared …

The latitudinal biodiversity gradient, with tropical regions acting as 'evolutionary cradles', is a
cornerstone of current biogeographical and ecological theory. In the modern world floral …

Description. Amb is circular to sub-circular. Laesurae straight, simple or accompanied by
labra, up to 3 pum in overall width, three-fifths to nine-tenths of the amb radius in length …

Application of integrated, multi-proxy optical analytical techniques for the assessment of
thermal maturity of organic matter was tested in Katian to Hirnantian (Upper Ordovician) …

The biomarkers retene, cadalene, tetrahydroretene and isohexylalkylnaphthalene have
been identified in the extracts of Silurian–Devonian clastic sediments from southern Tunisia …

Twenty one core samples of Late Ordovician to Early Devonian age from sections in
southern Tunisia, North African Platform (Gondwana) and containing marine and terrestrial …

The reconstruction of the upper Palaeozoic sedimentary evolution of Western Mediterranean
area is suffering for scarce age documentation of its stratigraphic units. This is also the …

Well-preserved miospore assemblages are recorded from the Late Ordovician (Katian–
Hirnantian) Ghelli Formation in the Pelmis Gorge, located in the Alborz Mountain Range …

Recent molecular phylogenetic studies of Dipsacales place Symphoricarpos in a clade
containing Leycesteria, Triosteum, and Lonicera. The aim of this research was to analyze …