دهر الطلائع - المعرفة

Proterozoic
2500 – 541.0 ± 1.0 Ma Had'n Archean Proterozoic Pha.
Artist's depiction of life on the ocean floor as it may have appeared in the late Proterozoic.^[1]
Chronology
eras الجيولوجية This box: view talk edit -4500 — – -4000 — – -3500 — – -3000 — – -2500 — – -2000 — – -1500 — – -1000 — – -500 — – 0 — Hadean Archean Protero -zoic Phanero -zoic إيو Paleo مزو Neo پاليو مزو نيو پاليو مزو سنو المقياس: مليون سنة
Etymology
Name formality	Formal
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Time scale(s) used	ICS Time Scale
Definition
Chronological unit	Eon
Stratigraphic unit	Eonothem
Time span formality	Formal
Lower boundary definition	Defined Chronometrically
Lower boundary GSSP	N/A
GSSP ratified	N/A
Upper boundary definition	Appearance of the Ichnofossil Treptichnus pedum
Upper boundary GSSP	Fortune Head section, Newfoundland, Canada 47°04′34″N 55°49′52″W / 47.0762°N 55.8310°W / 47.0762; -55.8310
GSSP ratified	1992

دهر الپروتيروزوي Proterozoic، هو أحدث أقسام زمان الحياة المستترة cryptozoic أو زمان ما قبل الكمبري، ويشمل الفترة من 2500 إلى 600 مليون سنة مضت تقريبا.^[2]

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السجل الپروتيروزوي

تراكم الأوكسجين

الجغرافيا القديمة والتكتونيات

الحياة

Stromatolites (Proterozoic) Zebra River Canyon, Western Namibia

انظر أيضا

Timetable of the Precambrian

المصادر

وصلات خارجية

Proterozoic - Palaeos

قالب:Proterozoic eon

التاريخ الجيولوجي للأرض

Precambrian (4.57 Gya – 542 Mya)

In left column are eons; right column: bold are eras; not bold are periods:
Hadean (4.57 – 4 Gya)	(informal)
Archean (4 – 2.5 Gya)	Eoarchean (4 – 3.6 Gya) Paleoarchean (3.6 – 3.2 Gya) Mesoarchean (3.2 – 2.8 Gya) Neoarchean (2.8 – 2.5 Gya)
Proterozoic (2.5 Gya – 542 Mya)	Paleoproterozoic (2.5 – 1.6 Gya): Siderian (2.5 – 2.3 Gya) • Rhyacian (2.3 – 2.05 Gya) • Orosirian (2.05 – 1.8 Gya) • Statherian (1.8 – 1.6 Gya) Mesoproterozoic (1.6 – 1 Gya): Calymmian (1.6 – 1.4 Gya) • Ectasian (1.4 – 1.2 Gya) • Stenian (1.2 – 1 Gya) Neoproterozoic (1 Gya – 542 Mya): Tonian (1 Gya – 850 Mya) • Cryogenian (850 – 635 Mya) • Ediacaran (635 – 542 Mya)
Mya = millions years ago. Gya = billions years ago.

[الحياة الظاهرة

في الأشرطة الأفقية الحقب× في العمود الأيسر العصور× العمود الأيمن: بالخط العريض النطاقات؛ بالخط العادي المائل العهود؛ بالخط المائل chrons:

Paleozoic (542 – 251 Mya)

Cambrian (542 – 488.3 Mya)	Terreneuvian (542 – 521 Mya): Fortunian (542 – 528 Mya) • Age 2* (528 – 521 Mya) *Epoch 2 (521 – 510 Mya)*: Age 3 (521 – 515 Mya) • Age 4* (515 – 510 Mya) *Epoch 3 (510 – 499 Mya)*: Age 5 (510 – 506.5 Mya) • Drumian (506.5 – 503 Mya) • Guzhangian (503 – 499 Mya) Furongian (499 – 488.3 Mya): Paibian (499 – 496 Mya) • Age 9* (496 – 492 Mya) • Age 10* (492 – 488.3 Mya)
Ordovician (488.3 – 443.7 Mya)	Early Ordovician (488.3 – 471.8 Mya): Tremadocian (488.3 – 478.6 Mya) • Floian (478.6 – 471.8 Mya) Middle Ordovician (471.8 – 460.9 Mya): Dapingian (471.8 – 468.1 Mya) • Darriwilian (468.1 – 460.9 Mya) Late Ordovician (460.9 – 443.7 Mya): Sandbian (460.9 – 455.8 Mya) • Katian (455.8 – 445.6 Mya) • Hirnantian (445.6 – 443.7 Mya)
Silurian (443.7 – 416 Mya)	Llandovery (443.7 – 428.2 Mya): Rhuddanian (443.7 – 439 Mya) • Aeronian (439 – 436 Mya) • Telychian (436 – 428.2 Mya) Wenlock (428.2 – 422.9 Mya): Sheinwoodian (428.2 – 426.2 Mya) • Homerian (426.2 – 422.9 Mya) Ludlow (422.9 – 418.7 Mya): Gorstian (422.9 – 421.3 Mya) • Ludfordian (421.3 – 418.7 Mya) Pridoli (418.7 – 416 Mya)
Devonian (416 – 359.2 Mya)	Early Devonian (416 – 397.5 Mya): Lochkovian (416 – 411.2 Mya) • Pragian (411.2 – 407 Mya) • Emsian (407 – 397.5 Mya) Middle Devonian (397.5 – 385.3 Mya): Eifelian (397.5 – 391.8 Mya) • Givetian (391.8 – 385.3 Mya) Late Devonian (385.3 – 359.2 Mya): Frasnian (385.3 – 374.5 Mya) • Famennian (374.5 – 359.2 Mya)
Carboniferous (359.2 – 299 Mya)	Mississippian (359.2 – 318.1 Mya): Tournaisian / Early Mississippian (359.2 – 345.3 Mya) • Viséan / Middle Mississippian (345.3 – 328.3 Mya) • Serpukhovian / Late Mississippian (328.3 – 318.1 Mya) Pennsylvanian (318.1 – 299 Mya): Bashkirian / Early Pennsylvanian (318.1 – 311.7 Mya) • Moscovian / Middle Pennsylvanian (311.7 – 307.2 Mya) • Late Pennsylvanian (307.2 – 299 Mya): Kasimovian (307.2 – 303.4 Mya) • Gzhelian (303.4 – 299 Mya)
Permian (299 – 251 Mya)	Cisuralian (299 – 270.6 Mya): Asselian (299 – 294.6 Mya) • Sakmarian (294.6 – 284.4 Mya) • Artinskian (284.4 – 275.6 Mya) • Kungurian (275.6 – 270.6 Mya) Guadalupian (270.6 – 260.4 Mya): Roadian (270.6 – 268 Mya) • Wordian (268 – 265.8 Mya) • Capitanian (265.8 – 260.4 Mya) Lopingian (260.4 – 251 Mya): Wuchiapingian (260.4 – 253.8 Mya) • Changhsingian (253.8 – 251 Mya)

الحقبة الوسطى (251 – 65.5 Mya)

Triassic (251 – 199.6 Mya)	Early Triassic (251 – 245.9 Mya): Induan (251 – 249.5 Mya) • Olenekian (249.5 – 245.9 Mya) Middle Triassic (245.9 – 228.7 Mya): Anisian (245.9 – 237 Mya) • Ladinian (237 – 228.7 Mya) Late Triassic (228.7 – 199.6 Mya): Carnian (228.7 – 216.5 Mya) • Norian (216.5 – 203.6 Mya) • Rhaetian (203.6 – 199.6 Mya)
Jurassic (199.6 – 145.5 Mya)	Early Jurassic (199.6 – 175.6 Mya): Hettangian (199.6 – 196.5 Mya) • Sinemurian (196.5 – 189.6 Mya) • Pliensbachian (189.6 – 183 Mya) • Toarcian (183 – 175.6 Mya) Middle Jurassic (175.6 – 161.2 Mya): Aalenian (175.6 – 171.6 Mya) • Bajocian (171.6 – 167.7 Mya) • Bathonian (167.7 – 164.7 Mya) • Callovian (164.7 – 161.2 Mya) Late Jurassic (161.2 – 145.5 Mya): Oxfordian (161.2 – 155.6 Mya) • Kimmeridgian (155.6 – 150.8 Mya) • Tithonian (150.8 – 145.5 Mya)
Cretaceous (145.5 – 65.5 Mya)	Early Cretaceous (145.5 – 99.6 Mya): Berriasian (145.5 – 140.2 Mya) • Valanginian (140.2 – 133.9 Mya) • Hauterivian (133.9 – 130 Mya) • Barremian (130 – 125 Mya) • Aptian (125 – 112 Mya) • Albian (112 – 99.6 Mya) Late Cretaceous (99.6 – 65.5 Mya): Cenomanian (99.6 – 93.6 Mya) • Turonian (93.6 – 88.6 Mya) • Coniacian (88.6 – 85.8 Mya) • Santonian (85.8 – 83.5 Mya) • Campanian (83.5 – 70.6 Mya) • Maastrichtian (70.6 – 65.5 Mya)

Cenozoic (65.5 – 0 Mya)

الپاليوجيني, النيوجيني والپلايستوسيني ضمن عصر العصر الثلاثي السابق* (65.5 – 1.8 سنة مضت) . Gelasian and Calabrian ضمن الپلايستوسيني المبكر (2.588 Mya – 781 kya) subepoch.
الپاليوجيني (65.5 – 23.03 Mya)	الپاليوسيني (65.5 – 55.8 Mya): Danian (65.5 – 61.1 Mya) • Selandian (61.1 – 58.7 Mya) • Thanetian (58.7 – 55.8 Mya) الإيوسيني (55.8 – 33.9 Mya): Ypresian (55.8 – 48.6 Mya) • Lutetian (48.6 – 40.4 Mya) • Bartonian (40.4 – 37.2 Mya) • Priabonian (37.2 – 33.9 Mya) Oligocene (33.9 – 23.03 Mya): Rupelian (33.9 – 28.4 Mya) • Chattian (28.4 – 23.03 Mya)
النيوجيني (23.03 – 2.588 Mya)	الميوسيني (23.03 – 5.332 Mya): Aquitanian (23.03 – 20.43 Mya) • Burdigalian (20.43 – 15.97 Mya) • Langhian (15.97 – 13.82 Mya) • Serravallian (13.82 – 11.608 Mya) • Tortonian (11.608 – 7.246 Mya) • Messinian (7.246 – 5.332 Mya) Pliocene (5.332 – 2.588 Mya): Piacenzian (5.332 – 3.6 Mya) • Zanclean (3.6 – 2.588 Mya)
Quaternary (2.588 – 0 Mya)	الپلايستوسيني (2.588 Mya – 11.4 kya): Gelasian (2.588 – 1.806 Mya) • Calabrian (1.806 Mya – 781 kya) • الپلايستوسيني المتوسط / Ionian (781 – 126 kya) • الپلايستوسيني المتأخر / Tarantian (126 – 11.4 kya): Oldest Dryas (18 – 14.67 kya) • Bølling* (14.67 – 14 kya) • Older Dryas* (14 – 13.7 kya) • Allerød* (13.7 – 12.8 kya) • Younger Dryas* (12.8 – 11.4 kya)* Holocene (11.4 – 0 kya): Preboreal (11.4 – 9 kya) • Boreal* (9 – 8 kya) • Atlantic* (8 – 5 kya) • Subboreal* (5 – 2.5 kya) • Subatlantic* (2.5 – 0 kya)*

kya = thousands years ago. Mya = millions years ago. * Not officially recognized by the I.C.S.

Source: International Stratigraphic Chart. International Commission on Stratigraphy. Retrieved 8 February 2008.