je osere to gba Ebun Akademi bi Obinrin Osere Todarajulo.Itokasiawon ojoibi ni Awon elebun Akademi Obinrin Osere Didarajulo 1k.. 
The silurian is a geologic period and system that extends from the end of the ordovician period, about 443.7 +- 1.5 Mya (million years ago), to the beginning of the phenoonian period, about 416.0 +- 2.8 mya .. 