Fonts d'Informació

Precambrià:

https://ca.wikipedia.org/wiki/Precambri%C3%A0

https://sites.google.com/site/geovye/home/el-precambria

https://prezi.com/pdcyhuypym1m/precambria/

Paleozoic:

https://sites.google.com/site/historiadelnostreplaneta/el-paleozoic

https://www.lifeder.com/era-paleozoica/#Flora

https://www.icgc.cat/Ciutada/Explora-Catalunya/Atles/Atles-geologic-de-Catalunya/Historia-geologica-de-Catalunya/Formacio-d-un-supercontinent-mundial-i-un-ocea-global.-El-Paleozoic

Mesozoic:

https://en.wikipedia.org/wiki/Mesozoic 

https://www.laserasgeologicas.com/era-mesozoica/#flora-y-fauna-en-la-era-mesozoica

https://anafreedom1515.wixsite.com/mesozoico/clima-c1x1t

Cenozoic:

https://sites.google.com/site/historiadelnostreplaneta/el-cenozoic

https://ca.wikipedia.org/wiki/Cenozoic 

https://sites.google.com/site/jmgmngmn/el-cenozoic-l-era-dels-mamifers