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A Simple Type of Wood in Two Early Devonian Plants
The small size of the plants and the presence of thick-walled cortical cells confirm that wood early evolution was driven by hydraulic constraints rather than by the necessity of mechanical support for increasing height.
A complete insect from the Late Devonian period
The first complete Late Devonian insect is reported, which was probably a terrestrial species and demonstrates further a first Devonian phase of diversification for the Hexapoda, as in vertebrates, and suggests that the Pterygota diversified before and during Romer’s gap.
High resolution miospore stratigraphy of the Upper Famennian of eastern Belgium, and correlation with the conodont zonation.
The Ourthe valley in eastern Belgium provides the most complete exposures of the upper Famennian Condroz Group. A detailed miospore stratigraphy has been established for this succession. The lower
Were All Devonian Seeds Cupulate? A Reinvestigation of Pseudosporogonites hallei, Xenotheca bertrandii, and Aglosperma spp.
The uniovulate cupule in Pseudosporogonites is distinct from multiovulate telomic cupules of other Devonian seeds and expands the phenotypic diversity seen during the earliest phase of seed plant radiation, which was geologically instantaneous.
Disrupted continental environments around the Devonian-Carboniferous Boundary: introduction of the tener event
1. Introduction The Devonian-Carboniferous Boundary (DCB) is associated with one of the most severe biocrises through the Phanereozoic, namely the Hangenberg Event or Hangenberg Biocrisis. Long