New variables for brane-world gravity

Geometric variables naturally occurring in a time-like foliation of brane-worlds are introduced. These consist of the induced metric and two sets of lapse functions and shift vectors, supplemented by two sets of tensorial, vectorial and scalar variables arising as projections of the two extrinsic curvatures. A subset of these variables turn out to be dynamical. Brane-world gravitational dynamics is given as the time evolution of these variables.Comment: 6 pages, to appear in the Proceedings of the Albert Einstein's Century International Conference, Paris 2005 (AIP Conference Proceedings, 2006

Middle Miocene Tonnoidea and Ficoidea (Caenogastropoda) assemblages from Letkés (Hungary)

Taxonomic composition of highly diverse early Badenian (early Langhian) Tonnoidea and Ficoidea assemblages from Letkés (Börzsöny Mts, Hungary) is given. Four Ficusspecies and 23 tonnoid species are described, including Semicassis szilviae n. sp. designated here. Four taxa represent new records from the Badenian of Hungary: Turritriton grundensis (Hoernes et Auinger), Bursa ranelloides (Reeve), Bursa corrugata (Perry), and Personopsis grasi (Bellardi in d’Ancona). Mio cene stratigraphical and palaeogeographical ranges of the studied species are summarized. With 68 figures