REVISTA TECNICA DICIEMBRE-1991CONTENIDOPRESENTACIONINTRODUCTIONORDOVICIAN VERTEBRATES ...THE SILURIAN ...THE PERMIAN ...THE MESOZOIC ...LATE CRETACEOUS ...LUNGFISH FROM ...PYCNODONT FISH ..."HOLOSTEAN" AND ...POLYPTERIDAE ...GYMNOPHIONAN ...SQUAMATE REPTILES ...FOSSIL ...A NEW EARLY ...FOSSIL CROCODILIANS ...A NEW CROCODILIAN ...EL CICLO FAUNISTICO ...LA FAUNA DE ...LOS ROEDORES DE ...THE EOCENE TO ...NEW LAND MAMMAL ...PLEISTOCENE VERTEBRATES ...THE LORENZO SUNDT ...THE MARSHALL FIELD ...SOBRE LAS CAPAS DE ...BIBLIOGRAFIA PALEONTOLOGICA DE BOLIVIA