// todo need optimize like in event.jsp. Add indexing or not indexing this page. Ордовикский период (6 giug 490000000 anni a. C. – 6 giug 442000000 anni a. C.) (Il nastro del tempo)
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Ордовикский период (6 giug 490000000 anni a. C. – 6 giug 442000000 anni a. C.)

Descrizione:

Уменьшение площади морских бассейнов. Появление первых наземных беспозвоночных

Aggiunto al nastro di tempo:

Геологические этапы развития Земли

ByАня Князева
6 nov 2018

Data:

6 giug 490000000 anni a. C.
6 giug 442000000 anni a. C.
~ 5883516 years
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