Title:Analysis of the diffraction efficiency in transverse configuration in sillenite crystals Bi12TiO20 / Analisis de la eficiencia de difracción en configuración transversal en cristales silenitas Bi12TiO20
Title:A new Megatheriinae skull (Xenarthra, Tardigrada) from the pliocene of northern Venezuela : Implications for a giant sloth dispersal to central and North America