Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

دورانها و دوراه های زمین شناسی

(mya = million years ago) 

Phanerozoic Eon
(543 mya to present)

Cenozoic Era
(65 mya to today)

Quaternary (1.8 mya to today)
       Holocene (10,000 years to today)
       
Pleistocene (1.8 mya to 10,000 yrs)
Tertiary (65 to 1.8 mya)
       Pliocene (5.3 to 1.8 mya)
       
Miocene (23.8 to 5.3 mya)
       
Oligocene (33.7 to 23.8 mya)
       
Eocene (54.8 to 33.7 mya)
       
Paleocene (65 to 54.8 mya)

Mesozoic Era
(248 to 65 mya)

Cretaceous (144 to 65 mya)
Jurassic (206 to 144 mya)
Triassic (248 to 206 mya)

Paleozoic Era
(543 to 248 mya)

Permian (290 to 248 mya)
Carboniferous (354 to 290 mya)
       Pennsylvanian (323 to 290 mya)
       Mississippian (354 to 323 mya)

Devonian (417 to 354 mya)
Silurian (443 to 417 mya)
Ordovician (490 to 443 mya)
Cambrian (543 to 490 mya)
        Tommotian (530 to 527 mya)

Precambrian Time
(4,500 to 543 mya)

Proterozoic Era
(2500 to 543 mya)

Neoproterozoic (900 to 543 mya)
       Vendian (650 to 543 mya)
Mesoproterozoic (1600 to 900 mya)
Paleoproterozoic (2500 to 1600 mya)

Archaean
(3800 to 2500 mya)

Hadean
(4500 to 3800 mya)


  
نویسنده : رضا رمضان نژاد قادی ; ساعت ٦:۱۱ ‎ب.ظ روز چهارشنبه ٢٧ دی ۱۳۸٥