Eras Geologicas

                                1) Era Precambrica

                                                         Era Paleozoica

 

                                                            Era Mesozoica

                                                                  Era Cenozoica

                                       2) Fósiles Guía

                                      TRILOBITES - ERA PRIMARIA

                                  
                                                FOSIL - ERA SECUNDARIA

     3) FORMAS DE RELIEVE

     ERA PRECAMBRICA

ERA PALEOZOICA

ERA MESOZIOCA 

   

 ERA CENOZOICA