Era paleozoica (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Era paleozoica" in Spanish language version.

refsWebsite

Global rank Spanish rank

850^th place

553^rd place

purdue.edu

stratigraphy.science.purdue.edu

Los colores corresponden a los códigos RGB aprobados por la Comisión Internacional de Estratigrafía. Disponible en el sitio de la International Commision on Stratigraphy, en «Standard Color Codes for the Geological Time Scale».
Global Boundary Stratotype Section and Point (GSSP) of the International Commission of Stratigraphy, Status on 2009.
International Stratigraphic Chart, 2008