Dating

• Phanerozoic (541-0)
  • Cenozoic (66-0)
    • Quaternary (2.58-0)
      • Holocene (0.0117-0)
      • Pleistocene (2.58-0.0117)
        • Upper (0.126-0.0117)
        • Middle (0.781-0.126)
        • Calabrian (1.8-0.781)
        • Gelasian (2.58-1.8)
    • Neogene (23.03-2.58)
      • Pliocene (5.333-2.58)
        • Piacenzian (3.6-2.58)
        • Zanclean (5.333-3.6)
      • Miocene (23.03-5.333)
        • Messinian (7.246-5.333)
        • Tortonian (11.63-7.246)
        • Serravallian (13.82-11.63)
        • Langhian (15.97-13.82)
        • Burdigalian (20.44-15.97)
        • Aquitanian (23.03-20.44)
    • Paleogene (66-23.03)
      • Oligocene (33.9-23.03)
        • Chattian (28.1-23.03)
        • Rupelian (33.9-28.1)
      • Eocene (56-33.9)
        • Priabonian (37.8-33.9)
        • Bartonian (41.2-37.8)
        • Lutetian (47.8-41.2)
        • Ypresian (56-47.8)
      • Paleocene (66-56)
        • Thanetian (59.2-56)
        • Selandian (61.6-59.2)
        • Danian (66-61.6)
  • Mesozoic (252.17-66)
    • Cretaceous (145-66)
      • Upper (100.5-66)
        • Maastrichtian (72.1-66)
        • Campanian (83.6-72.1)
        • Santonian (86.3-83.6)
        • Coniacian (89.8-86.3)
        • Turonian (93.9-89.8)
        • Cenomanian (100.5-93.9)
      • Lower (145-100.5)
        • Albian (113-100.5)
        • Aptian (125-113)
        • Barremian (129.4-125)
        • Hauterivian (132.9-129.4)
        • Valanginian (139.8-132.9)
        • Berriasian (145-139.8)
    • Jurassic (201.03-145)
      • Upper (163.5-145)
        • Tithonian (152.1-145)
        • Kimmeridgian (157.3-152.1)
        • Oxfordian (163.5-157.3)
      • Middle (174.1-163.5)
        • Callovian (166.1-163.5)
        • Bathonian (168.3-166.1)
        • Bajocian (170.3-168.3)
        • Aalenian (174.1-170.3)
      • Lower (201.3-174.1)
        • Toarcian (182.7-174.1)
        • Pliensbachian (190.8-182.7)
        • Sinemurian (199.3-190.8)
        • Hettangian (201.3-199.3)
    • Triassic (252.17-201.3)
      • Upper (237-201.3)
        • Rhaetian (208.5-201.3)
        • Norian (227-208.5)
        • Carnian (237-227)
      • Middle (247.2-237)
        • Ladinian (242-237)
        • Anisian (247.2-242)
      • Lower (252.17-247.2)
        • Olenekian (251.2-247.2)
        • Induan (252.17-251.2)
  • Paleozoic (541-252.17)
    • Permian (298.9-252.17)
      • Lopingian (259.8-252.17)
        • Changhsingian (254.14-252.17)
        • Wuchiapingian (259.8-254.14)
      • Guadalupian (272.3-259.8)
        • Capitanian (265.1-259.8)
        • Wordian (268.8-265.1)
        • Roadian (272.3-268.8)
      • Cisuralian (298.9-272.3)
        • Kungurian (283.5-272.3)
        • Artinskian (290.1-283.5)
        • Sakmarian (295-290.1)
        • Asselian (298.9-295)
    • Carboniferous (358.9-298.9)
      • Upper Pennsylvanian (307-298.9)
        • Gzhelian (303.7-298.9)
        • Kasimovian (307-303.7)
      • Middle Pennsylvanian (315.2-307)
        • Moscovian (315.2-307)
      • Lower Pennsylvanian (323.2-315.2)
        • Bashkirian (323.2-315.2)
      • Upper Mississippian (330.9-323.2)
        • Serpukhovian (330.9-323.2)
      • Middle Mississippian (346.7-330.9)
        • Visean (346.7-330.9)
      • Lower Mississippian (358.9-346.7)
        • Tournaisian (358.9-346.7)
    • Devonian (419.2-358.9)
      • Upper (382.7-358.9)
        • Famennian (372.2-358.9)
        • Frasnian (382.7-372.2)
      • Middle (393.3-382.7)
        • Givetian (387.7-382.7)
        • Eifelian (393.3-387.7)
      • Lower (419.2-393.3)
        • Emsian (407.6-393.3)
        • Pragian (410.8-407.6)
        • Lochkovian (419.2-410.8)
    • Silurian (443.8-419.2)
      • Pridoli (423.3-419.2)
      • Ludlow (427.4-423)
        • Ludfordian (425.6-423)
        • Gorstian (427.4-425.6)
      • Wenlock (433.4-427.4)
        • Homerian (430.5-427.4)
        • Sheinwoodian (433.4-430.5)
      • Llandovery (443.8-433.4)
        • Telychian (438.5-433.4)
        • Aeronian (440.8-438.5)
        • Rhuddanian (443.8-440.8)
    • Ordovician (485.4-443.8)
      • Upper (458.4-443.8)
        • Hirnantian (445.2-443.8)
        • Katian (453-445.2)
        • Sandbian (458.4-453)
      • Middle (470-458.4)
        • Darriwilian (467.3-458.4)
        • Dapingian (470-467.3)
      • Lower (485.4-470)
        • Floian (477.7-470)
        • Tremadocian (485.4-477.7)
    • Cambrian (541-485.4)
      • Furongian (497-485.4)
        • Stage 10 (489.5-485.4)
        • Jiangshanian (494-489.5)
        • Paibian (497-494)
      • Series 3 (509-497)
        • Guzhangian (500.5-497)
        • Drumian (504.5-500.5)
        • Stage 5 (509-504.5)
      • Series 2 (521-509)
        • Stage 4 (514-509)
        • Stage 3 (521-514)
      • Terreneuvian (541-521)
        • Stage 2 (529-521)
        • Fortunian (541-529)
• Precambrian Proterozoic (2500-541)
  • Neoproterozoic (1000-541)
    • Ediacarian (635-541)
    • Cryogenian (720-635)
    • Tonian (1000-720)
  • Mesoproterozoic (1600-1000)
    • Stenian (1200-1000)
    • Ectasian (1400-1200)
    • Calymmian (1600-1400)
  • Paleoproterozoic (2500-1600)
    • Statherian (1800-1600)
    • Orosinian (2050-1800)
    • Rhyacian (2300-2050)
    • Siderian (2500-2300)
  • Neoarchean (2800-2500)
  • Mesoarchean (3200-2800)
  • Paleoarchean (3600-3200)
  • Eoarchean (4000-3600)
  • Hadean (4600-4000)
• Precambrian Archean (4000-2500)
• Preacambrian Hadean (4600-4000)