Stratigraphic correlation potential of magnetic susceptibility and gamma-ray spectrometric variations in calciturbiditic facies (Silurian-Devonian boundary, Prague Synclinorium, Czech Republic)

Prague , Czech Republic September 12 − 15 , 2006 Probabilistic Graphical Models

ion and Refinement for Solving Continuous Markov Decision Processes. . . . . . . . . . . . . . .263Alberto Reyes, Pablo Ibargüengoytia, L. Enrique Sucar, and Eduardo Morales Bayesian Model Averaging of TAN Models for Clustering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271Guzmán Santafé, Jose A. Lozano, and Pedro Larrañaga Dynamic Weighting A* Search-based ...

Division Rhyniophyta - Upper Silurian to Middle Devonian

Among the oldest convincing fossils of early vascular land plants are those of the Division Rhyniophyta. The members of this division consist of: (1) simple axes with cuticle, stomates, epidermis, cortex and a terete (circular) centrarch xylem (xylem development occurs from the center of the stem to the periphery), without well-developed appendages or roots; (2) simple, isotomous branching syst...

Unique diversity of acanthothoracid placoderms (basal jawed vertebrates) in the Early Devonian of the Prague Basin, Czech Republic: A new look at Radotina and Holopetalichthys

The taxonomy of Early Devonian placoderm material from the Lochkovian and Pragian of the Prague basin, previously attributed to the genera Radotina and Holopetalichthys, is revised. The Pragian species Radotina tesselata Gross 1958 shares detailed similarities with the holotype of the Lochkovian Radotina kosorensis Gross 1950, which is also the holotype of the genus; the assignation of both spe...

Phylogeny, classification and evolution of Silurian and Devonian scorpions

The phylogenetic position of scorpions within the Chelicerata has been the subject of much debate in recent years (e.g. Weygoldt & Paulus, 1979; Bergström, 1980; Van der Hammen, 1989; Shultz, 1990; Starobogatov, 1990), but it revolves around one primary question: are scorpions part of a monophyletic Arachnida, or are they “merostomes” which exhibit a terrestrial grade of existence? Inclusion of...

Czech Technical University in Prague