Neojiin

Neojiin (Af-Laatiin: Neogene), qaybta dambe ee xilliga Saddexaad,Erayga 'saddexaad' ee maqaalkan macnihiisu waa ka bacdi Nuurad. oo ka kooban xilliyadii Miosiin iyo Bliyosiin, ama nidaamka dhagxaanta la dhigo inta lagu jiro.

Xilliga Neojiin waxaa ku jira inta u dhaxaysa 23 milyan iyo 2.6 milyan oo sano ka hor waxaana ku jira Miosiin (23 milyan ilaa 5.3 milyan sano ka hor) iyo Bliyusiin (5.3 milyan ilaa 2.6 milyan sano ka hor).  Niujiin, oo macneheedu yahay "dhalasho cusub," ayaa loo qoondeeyey si loo xoojiyo in badda iyo fosil-ka dhulka ee laga helay marxaladdan wakhtigan ay aad ugu dhow yihiin midba midka kale marka loo eego kuwii hore, oo loo yaqaan Balyuujiin (66 milyan oo sano ka hor) 23 milyan oo sano ka hor).

Erayga Neojiin waxaa si weyn looga isticmaalaa Yurub sida qayb juquraafi ah, waxaana si sii kordheysa looga isticmaalaa Waqooyiga Ameerika, halkaas oo xilliga Senosoyig dhaqan ahaan loo qaybiyay saddexaad (66 ilaa 2.6 milyan sano ka hor) iyo afar-geesod (2.6 milyan sano ka hor) .

Tixraac

Xiriirinta dibadda
Neogene - Britannica