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ID number:636950
 
Author:
Evaluation:
Published: 29.10.2019.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

Devona periods
Pirmie kukaiņi,abinieki,gliemji,plakoderms-zivju daudzveidība
Karbona periods
Pirmie rāpuļi,zirnekļi,abinieki,skujkoki,sinapsīdi-rāpuļi,kas ir zīdītāju senči,izplatās kukaiņu daudzveidība
Perma periods
Sinapsīdu-peliozauru daudzveidība,samazinās abinieku daudzveidība
…

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