Miocene Edentata Xenarthra of La Venta (Colombia) I Dasypodoidea and Glyptodontoidea Jaime De Porta 5-23 PDF (Español (España))
Sedimentological study at upper part of the Guadalupe Formation to the east of Bogota Manuel Julivert 25-54 PDF (Español (España))
Petrographic study at upper part of the Guadalupe Formation ( upper Cretaceous ) to the east of Bogota Zamarreño De Julivert 55-67 PDF (Español (España))
Cretaceous micropaleontogy at the NW of Bogota ( Colombia ) Guillermo Colom 69-80 PDF (Español (España))
