Tabla de Contenidos: “…Introduction : The origin and evolution of tetrapods -- Skulls and skeletons in transition -- Relationships and relatives : the lobe-fin family -- Setting the scene : the Devonian world -- The first feet : tetrapods of the Famennian -- From fins to reet : transformation and transition -- Emerging into the Carboniferous : the first phase -- East Kirkton and the roots of the modern family tree -- The late Carboniferous : expanding horizons -- Gaining ground : the evolution of terrestriality…”