Knowledge (XXG)

Cambrian Series 2

Source πŸ“

2440: 2429: 1159:
The Ordian stage, which is use in Australian chronostratigraphical scale, was originally supposed to be the lowest stage of the Miaolingian, but may belong to upper Series 2. As of 2024, the base of the Ordian is not defined yet.
1172:. Correlating this event on different continents has proven difficult and resolving this is essential for the definition of the lower boundary of this series. Currently the oldest trilobite known is 1501:
Zhang, Wenhao; et al. (2014). "Mass-occurrence of oncoids at the Cambrian Series 2–Series 3 transition: Implications for microbial resurgence following an Early Cambrian extinction".
1809: 1193:
and the marine environment are posited as the most likely cause of this extinction. At the Series 2–Miaolingian boundary, the first major trilobite extinction, known as the
1120:
yet. In part the new name will replace the older terms "Lower Cambrian" and "Early Cambrian". The nomenclature used in Siberia uses the term "Yakutian" for this series.
1258:"Global Standard Stratotype-Section and Point (GSSP) for the conterminous base of the Miaolingian Series and Wuliuan Stage (Cambrian) at Balang, Jianhe, Guizhou, China" 1598: 1569: 1487: 1370: 1272: 1328:"Age of the lower Cambrian Vanadium deposit, East Guizhou, South China: Evidences from age of tuff and carbon isotope analysis along the Bagong section" 1802: 1661: 1129: 1113: 1093: 926: 877: 1458:
John R. Laurie, Peter D. Kruse, Glenn A. Brock, James D. Holmes, James B. Jago, Marissa J. Betts, John R. Paterson, Patrick M. Smith (April 2024).
1795: 1620: 1305: 1632: 1530:"Chemostratigraphic correlations across the first major trilobite extinction and faunal turnovers between Laurentia and South China" 1413: 2468: 1654: 1385: 1140:. Both of these stages also lack formal definition. The Siberian nomenclature distinguishes three stages (lowest first): 1036: 1818: 915: 2473: 2463: 1257: 1194: 1647: 1585:"Chronostratigraphy of the Cambrian Series 2 -Miaolingian boundary, western Stansbury Basin, South Australia" 2091: 2086: 1097: 1010: 986: 811: 1301: 1563: 1528:
Jih-Pai Lin, Frederick A. Sundberg, Ganqing Jiang, Isabel P. MontaΓ±ez, Thomas Wotte (22 November 2019).
1481: 960: 1022: 2422: 1096:, lacking a precise lower boundary and subdivision into stages. The proposed lower boundary is the 1198: 791: 751: 2439: 1185:
The end of the 2nd series of the Cambrian is marked by the first major biotic extinction of the
2184: 1771: 1592: 1583:
Courtney Birksmith, Glenn A. Brock, Marissa J. Betts, James D. Holmes, Zhiliang Zhang (2023).
1349: 1218: 530: 1616: 2314: 2189: 2158: 1955: 1729: 1724: 1713: 1549: 1541: 1510: 1467: 1424: 1339: 1137: 1133: 709: 472: 459: 446: 2283: 2179: 2117: 2012: 1981: 1950: 1628: 1190: 950: 1371:"The 13th International Field Conference of the Cambrian Stage Subdivision Working Group" 1434: 2433: 2252: 2122: 2017: 1986: 1554: 1153: 858: 784: 248: 2457: 2153: 2143: 2112: 2075: 2007: 1976: 1584: 1529: 1459: 1414:"Tentative correlation of Cambrian Series 2 between South China and other continents" 759: 688: 668: 647: 607: 72: 17: 2444: 2428: 2375: 2225: 2148: 1766: 1683: 1202: 1085: 519: 330: 1472: 2370: 2239: 2215: 2060: 1855: 1693: 1089: 831: 627: 385: 47: 1545: 1168:
The beginning of the 2nd series of the Cambrian is marked by the appearance of
2365: 2325: 2268: 2168: 2065: 1939: 1839: 1787: 1750: 1174: 1169: 1141: 1101: 780: 755: 501: 426: 321: 92: 57: 1514: 1429: 1353: 1051: 1038: 2380: 2330: 2304: 2263: 2210: 2055: 2031: 1912: 1902: 1891: 1708: 1698: 1206: 1186: 990: 731: 434: 408: 287: 261: 97: 1344: 2340: 2335: 2299: 2199: 2132: 2101: 1996: 1965: 1926: 1876: 1850: 1826: 1670: 1152:. In general most subdivisions of this series rely on biostratigraphy of 1149: 1145: 1117: 1081: 297: 87: 82: 67: 62: 52: 1327: 2354: 2294: 2044: 1881: 1865: 1761: 1745: 1740: 1217:
fossils are absent, the Series 2–Miaolingian boundary is determined by
1026: 788: 510: 492: 483: 102: 77: 2390: 2273: 1907: 586: 1639: 1030: 1412:
Yuan, J.L.; Zhu, X.J.; Lin, J.P.; Zhu, M.Y. (22 September 2011).
1238: 2414: 2410: 2406: 41: 1791: 1643: 1326:
Wu, Tong; Yang, Ruidong; Gao, Junbo; Li, Jun (1 January 2021).
1587:. Conference: Palaeo Down Under 3 at Perth, Western Australia. 847: 118: 1296: 1294: 1292: 1213:
appear after this global extinction, and in areas where
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which is estimated to be around 521 million years ago.
1197:, occurred. In particular, trilobites of the families 1464:
Alcheringa: An Australasian Journal of Palaeontology
2389: 2353: 2313: 2282: 2251: 2238: 2198: 2167: 2131: 2100: 2074: 2043: 2030: 1995: 1964: 1938: 1925: 1890: 1864: 1838: 1825: 1067: 1018: 1004: 996: 982: 974: 966: 956: 946: 941: 933: 921: 911: 906: 898: 893: 111: 32: 1460:"The quest for an Australian Cambrian stage scale" 1365: 1363: 1092:. Series 2 has not been formally defined by the 1128:The 2nd series is currently subdivided by the 1803: 1655: 876:Subdivision of the Cambrian according to the 8: 1631:. International Commission on Stratigraphy. 1597:: CS1 maint: multiple names: authors list ( 1568:: CS1 maint: multiple names: authors list ( 1486:: CS1 maint: multiple names: authors list ( 1407: 1405: 1245:. International Commission on Stratigraphy. 2248: 2040: 1935: 1835: 1810: 1796: 1788: 1679: 1662: 1648: 1640: 883:Vertical axis scale: millions of years ago 1553: 1471: 1428: 1343: 1209:and South China, respectively. The first 1114:International Commission on Stratigraphy 1094:International Commission on Stratigraphy 997:Lower boundary GSSP candidate section(s) 1230: 843: 1590: 1561: 1479: 29: 7: 1116:has not named the 2nd series of the 983:Lower boundary definition candidates 820: 800: 768: 740: 719: 698: 677: 657: 636: 616: 596: 575: 2409:= kiloannum (thousands years ago); 2413:= megaannum (millions years ago); 1629:"GSSPs - The Cambrian System 2019" 27:Unnamed 2nd series of the Cambrian 25: 2417:= gigaannum (billions years ago). 1178:which marks the beginning of the 1080:is the unnamed 2nd series of the 2438: 2427: 1635:from the original on 2023-07-21. 1623:from the original on 2023-10-08. 1308:from the original on 2023-10-08 1278:from the original on 2022-03-04 1256:Zhao; et al. (June 2019). 1: 1856:Pleistocene (11.7 ka–2.58 Ma) 1473:10.1080/03115518.2024.2327045 1617:"GSSP Table - Paleozoic Era" 1384:(4): 440–441. Archived from 1302:"GSSP Table - Paleozoic Era" 1819:Geological history of Earth 2490: 2092:Mississippian (323–359 Ma) 2087:Pennsylvanian (299–323 Ma) 1851:Holocene (present–11.7 ka) 1546:10.1038/s41598-019-53685-2 1195:Olenellid Biomere boundary 2404: 2376:Paleoarchean (3.2–3.6 Ga) 2226:Terreneuvian (521–539 Ma) 1677: 1005:Upper boundary definition 975:Lower boundary definition 873: 869: 846: 116: 37: 2371:Mesoarchean (2.8–3.2 Ga) 2216:Miaolingian (497–509 Ma) 2061:Guadalupian (260–272 Ma) 1913:Paleocene (56.0–66.0 Ma) 1903:Oligocene (23.0–33.9 Ma) 1515:10.1016/j.gr.2014.03.015 1430:10.3140/bull.geosci.1274 2366:Neoarchean (2.5–2.8 Ga) 2331:Orosirian (1.8–2.05 Ga) 2326:Statherian (1.6–1.8 Ga) 2269:Cryogenian (635–720 Ma) 2159:Llandovery (433–444 Ma) 2066:Cisuralian (272–299 Ma) 1877:Pliocene (2.59–5.33 Ma) 1421:Bulletin of Geosciences 754:diversification, first 234:−485 — 224:−490 — 214:−495 — 204:−500 — 194:−505 — 184:−510 — 174:−515 — 164:−520 — 154:−525 — 144:−530 — 134:−535 — 124:−540 — 2469:Cambrian geochronology 2336:Rhyacian (2.05–2.3 Ga) 2305:Calymmian (1.4–1.6 Ga) 2264:Ediacaran (539–635 Ma) 2211:Furongian (485–497 Ma) 2056:Lopingian (252–260 Ma) 1882:Miocene (5.33–23.0 Ma) 1011:Oryctocephalus indicus 812:Baykonurian glaciation 2341:Siderian (2.3–2.5 Ga) 2300:Ectasian (1.2–1.4 Ga) 2221:Series 2 (509–521 Ma) 1908:Eocene (33.9–56.0 Ma) 1345:10.1515/geo-2020-0287 1205:have been extinct in 1088:series and below the 18:Second Cambrian epoch 2381:Eoarchean (3.6–4 Ga) 2274:Tonian (720 Ma–1 Ga) 2154:Wenlock (427–433 Ma) 2144:Pridoli (419–423 Ma) 1084:. It lies above the 1052:26.0807Β°N 108.4138Β°E 978:Not formally defined 2436: • 2425: • 2423:Geologic time scale 2185:Middle (458–470 Ma) 2149:Ludlow (423–427 Ma) 2118:Middle (383–393 Ma) 2013:Middle (237–247 Ma) 1982:Middle (164–174 Ma) 1068:Upper GSSP ratified 1048: /  1019:Upper boundary GSSP 967:Time span formality 2434:Geology portal 2295:Stenian (1–1.2 Ga) 2190:Early (470–485 Ma) 2123:Early (393–419 Ma) 2018:Early (247–252 Ma) 1987:Early (174–201 Ma) 1956:Early (100–145 Ma) 1951:Late (66.0–100 Ma) 1534:Scientific Reports 1239:"Chart/Time Scale" 1219:chemostratigraphic 957:Stratigraphic unit 947:Chronological unit 934:Time scale(s) used 2474:Geological epochs 2464:Cambrian Series 2 2451: 2450: 2349: 2348: 2315:Paleoproterozoic 2234: 2233: 2180:Late (444–458 Ma) 2113:Late (359–383 Ma) 2026: 2025: 2008:Late (201–237 Ma) 1977:Late (145–164 Ma) 1921: 1920: 1842:(present–2.58 Ma) 1830:(present–66.0 Ma) 1785: 1784: 1780: 1779: 1503:Gondwana Research 1132:into two stages: 1078:Cambrian Series 2 1075: 1074: 1057:26.0807; 108.4138 907:Usage information 888: 887: 865: 864: 840: 839: 819: 818: 799: 798: 767: 766: 739: 738: 718: 717: 697: 696: 676: 675: 656: 655: 635: 634: 615: 614: 595: 594: 33:Cambrian Series 2 16:(Redirected from 2481: 2445:World portal 2443: 2442: 2432: 2431: 2394: 2358: 2318: 2287: 2284:Mesoproterozoic 2256: 2249: 2244: 2203: 2172: 2136: 2105: 2079: 2048: 2041: 2036: 2000: 1969: 1943: 1936: 1931: 1895: 1869: 1843: 1836: 1831: 1812: 1805: 1798: 1789: 1680: 1664: 1657: 1650: 1641: 1636: 1624: 1603: 1602: 1596: 1588: 1580: 1574: 1573: 1567: 1559: 1557: 1525: 1519: 1518: 1498: 1492: 1491: 1485: 1477: 1475: 1455: 1449: 1448: 1446: 1445: 1439: 1433:. Archived from 1432: 1418: 1409: 1400: 1399: 1397: 1396: 1390: 1375: 1367: 1358: 1357: 1347: 1332:Open Geosciences 1323: 1317: 1316: 1314: 1313: 1298: 1287: 1286: 1284: 1283: 1277: 1262: 1253: 1247: 1246: 1243:stratigraphy.org 1235: 1138:Cambrian Stage 4 1134:Cambrian Stage 3 1098:first appearance 1063: 1062: 1060: 1059: 1058: 1053: 1049: 1046: 1045: 1044: 1041: 1023:Wuliu-Zengjiayan 853: 848: 826: 821: 806: 801: 774: 769: 746: 741: 725: 720: 704: 699: 683: 678: 663: 658: 642: 637: 622: 617: 602: 597: 581: 576: 535: 522: 513: 504: 495: 486: 477: 464: 451: 438: 421: 402: 379: 357: 315: 281: 254: 240: 235: 230: 225: 220: 215: 210: 205: 200: 195: 190: 185: 180: 175: 170: 165: 160: 155: 150: 145: 140: 135: 130: 125: 119: 107: 44: 30: 21: 2489: 2488: 2484: 2483: 2482: 2480: 2479: 2478: 2454: 2453: 2452: 2447: 2437: 2426: 2418: 2400: 2392: 2385: 2356: 2345: 2316: 2309: 2285: 2278: 2254: 2253:Neoproterozoic 2243:(539 Ma–2.5 Ga) 2242: 2241: 2240:Proterozoic Eon 2230: 2201: 2194: 2170: 2163: 2134: 2127: 2103: 2096: 2077: 2070: 2046: 2034: 2033: 2022: 1998: 1991: 1967: 1960: 1941: 1929: 1928: 1917: 1893: 1886: 1867: 1860: 1841: 1829: 1828: 1821: 1816: 1786: 1781: 1776: 1755: 1734: 1718: 1673: 1671:Cambrian Period 1668: 1627: 1615: 1612: 1607: 1606: 1589: 1582: 1581: 1577: 1560: 1527: 1526: 1522: 1500: 1499: 1495: 1478: 1457: 1456: 1452: 1443: 1441: 1437: 1416: 1411: 1410: 1403: 1394: 1392: 1388: 1373: 1369: 1368: 1361: 1338:(1): 999–1012. 1325: 1324: 1320: 1311: 1309: 1300: 1299: 1290: 1281: 1279: 1275: 1260: 1255: 1254: 1250: 1237: 1236: 1232: 1227: 1191:ocean chemistry 1166: 1164:Biostratigraphy 1154:trilobite zones 1126: 1110: 1056: 1054: 1050: 1047: 1042: 1039: 1037: 1035: 1034: 1033: 889: 884: 882: 861: 851: 836: 835: 824: 815: 814: 804: 795: 794: 772: 763: 762: 744: 735: 734: 723: 714: 713: 702: 693: 692: 681: 672: 671: 661: 652: 651: 640: 631: 630: 620: 611: 610: 600: 591: 590: 579: 572: 571: 567: 566: 562: 561: 557: 556: 552: 551: 547: 546: 542: 541: 537: 536: 527: 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2347: 2346: 2344: 2343: 2338: 2333: 2328: 2322: 2320: 2311: 2310: 2308: 2307: 2302: 2297: 2291: 2289: 2280: 2279: 2277: 2276: 2271: 2266: 2260: 2258: 2246: 2236: 2235: 2232: 2231: 2229: 2228: 2223: 2218: 2213: 2207: 2205: 2196: 2195: 2193: 2192: 2187: 2182: 2176: 2174: 2165: 2164: 2162: 2161: 2156: 2151: 2146: 2140: 2138: 2129: 2128: 2126: 2125: 2120: 2115: 2109: 2107: 2098: 2097: 2095: 2094: 2089: 2083: 2081: 2076:Carboniferous 2072: 2071: 2069: 2068: 2063: 2058: 2052: 2050: 2038: 2028: 2027: 2024: 2023: 2021: 2020: 2015: 2010: 2004: 2002: 1993: 1992: 1990: 1989: 1984: 1979: 1973: 1971: 1962: 1961: 1959: 1958: 1953: 1947: 1945: 1933: 1923: 1922: 1919: 1918: 1916: 1915: 1910: 1905: 1899: 1897: 1894:(23.0–66.0 Ma) 1888: 1887: 1885: 1884: 1879: 1873: 1871: 1868:(2.58–23.0 Ma) 1862: 1861: 1859: 1858: 1853: 1847: 1845: 1833: 1823: 1822: 1817: 1815: 1814: 1807: 1800: 1792: 1783: 1782: 1778: 1777: 1775: 1774: 1769: 1764: 1758: 1756: 1754: 1753: 1748: 1743: 1737: 1735: 1733: 1732: 1727: 1721: 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2214: 2212: 2209: 2208: 2206: 2204: 2197: 2191: 2188: 2186: 2183: 2181: 2178: 2177: 2175: 2173: 2166: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2142: 2141: 2139: 2137: 2130: 2124: 2121: 2119: 2116: 2114: 2111: 2110: 2108: 2106: 2099: 2093: 2090: 2088: 2085: 2084: 2082: 2080: 2073: 2067: 2064: 2062: 2059: 2057: 2054: 2053: 2051: 2049: 2042: 2039: 2037: 2032:Paleozoic Era 2029: 2019: 2016: 2014: 2011: 2009: 2006: 2005: 2003: 2001: 1994: 1988: 1985: 1983: 1980: 1978: 1975: 1974: 1972: 1970: 1963: 1957: 1954: 1952: 1949: 1948: 1946: 1944: 1942:(66.0–145 Ma) 1937: 1934: 1932: 1930:(66.0–252 Ma) 1924: 1914: 1911: 1909: 1906: 1904: 1901: 1900: 1898: 1896: 1889: 1883: 1880: 1878: 1875: 1874: 1872: 1870: 1863: 1857: 1854: 1852: 1849: 1848: 1846: 1844: 1837: 1834: 1832: 1824: 1820: 1813: 1808: 1806: 1801: 1799: 1794: 1793: 1790: 1773: 1770: 1768: 1765: 1763: 1760: 1759: 1757: 1752: 1749: 1747: 1744: 1742: 1739: 1738: 1736: 1731: 1728: 1726: 1723: 1722: 1720: 1715: 1712: 1710: 1707: 1706: 1704: 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Changes in 1188: 1183: 1181: 1177: 1176: 1171: 1163: 1161: 1157: 1155: 1151: 1147: 1143: 1139: 1135: 1131: 1123: 1121: 1119: 1115: 1107: 1105: 1103: 1099: 1095: 1091: 1087: 1083: 1079: 1070: 1066: 1061: 1032: 1028: 1024: 1021: 1017: 1013: 1012: 1007: 1003: 999: 995: 992: 988: 985: 981: 977: 973: 969: 965: 962: 959: 955: 952: 949: 945: 940: 936: 932: 928: 924: 920: 917: 914: 910: 905: 901: 897: 892: 881: 880:, as of 2022. 879: 872: 868: 860: 855: 850: 849: 845: 833: 828: 823: 822: 813: 808: 803: 802: 793: 790: 786: 782: 776: 771: 770: 761: 760:archaeocyatha 757: 753: 748: 743: 742: 733: 727: 722: 721: 711: 706: 701: 700: 690: 689:Sirius Passet 685: 680: 679: 670: 669:Emu Bay Shale 665: 660: 659: 649: 648:Archaeocyatha 644: 639: 638: 629: 624: 619: 618: 609: 608:Burgess Shale 604: 599: 598: 588: 583: 578: 577: 574: 533: 532: 521: 512: 503: 494: 485: 475: 474: 462: 461: 449: 448: 436: 428: 420: 401: 378: 354: 324: 323: 314: 313: 290: 289: 280: 279: 253: 252: 243: 121: 120: 115: 110: 104: 99: 94: 89: 84: 79: 74: 69: 64: 59: 54: 49: 43: 36: 31: 19: 2419: 2355:Archean Eon 2317:(1.6–2.5 Ga) 2220: 2202:(485–539 Ma) 2171:(444–485 Ma) 2135:(419–444 Ma) 2104:(359–419 Ma) 2078:(299–359 Ma) 2047:(252–299 Ma) 2035:(252–539 Ma) 1999:(201–252 Ma) 1968:(145–201 Ma) 1927:Mesozoic Era 1827:Cenozoic Era 1767:Jiangshanian 1688: 1684:Terreneuvian 1578: 1564:cite journal 1540:(1): 17392. 1537: 1533: 1523: 1506: 1502: 1496: 1482:cite journal 1463: 1453: 1442:. Retrieved 1435:the original 1420: 1393:. Retrieved 1386:the original 1381: 1377: 1335: 1331: 1321: 1310:. Retrieved 1280:. Retrieved 1268: 1264: 1251: 1242: 1233: 1214: 1210: 1203:Redlichiidae 1199:Ollenellidae 1184: 1179: 1173: 1167: 1158: 1127: 1124:Subdivisions 1111: 1086:Terreneuvian 1077: 1076: 1009: 875: 529: 520:Jiangshanian 471: 458: 445: 363: 320: 296: 286: 260: 247: 2391:Hadean Eon 2169:Ordovician 1940:Cretaceous 1840:Quaternary 1694:Miaolingian 1509:: 432–450. 1423:: 397–404. 1271:: 165–184. 1180:Fallotaspis 1090:Miaolingian 1055: / 1043:108Β°24β€²50β€³E 832:Dresbachian 781:halkieriids 756:brachiopods 628:Kaili biota 2458:Categories 2393:(4–4.6 Ga) 2357:(2.5–4 Ga) 2286:(1–1.6 Ga) 1892:Paleogene 1751:Guzhangian 1444:2024-04-02 1395:2024-04-02 1312:2024-04-02 1282:2024-04-02 1225:References 1215:O. indicus 1211:O. indicus 1175:Lemdadella 1170:trilobites 1142:Atdabanian 1102:trilobites 1040:26Β°04β€²51β€³N 991:Trilobites 942:Definition 834:extinction 732:Trilobites 710:Chengjiang 650:extinction 502:Guzhangian 112:Chronology 2420:See also: 2200:Cambrian 2133:Silurian 2102:Devonian 1997:Triassic 1966:Jurassic 1709:Fortunian 1699:Furongian 1354:2391-5447 1207:Laurentia 1187:Paleozoic 894:Etymology 435:Fortunian 288:Ediacaran 2045:Permian 1866:Neogene 1772:Stage 10 1689:Series 2 1633:Archived 1621:Archived 1593:cite web 1378:Episodes 1306:Archived 1273:Archived 1265:Episodes 1150:Toyonian 1146:Botomian 1118:Cambrian 1082:Cambrian 925:Global ( 902:Informal 789:hyoliths 785:mollusсs 531:Stage 10 1762:Paibian 1746:Drumian 1741:Wuliuan 1730:Stage 4 1725:Stage 3 1714:Stage 2 1555:6874646 1027:Guizhou 1008:FAD of 852:  825:← 805:← 773:← 745:← 724:← 703:← 682:← 662:← 641:← 621:← 601:← 580:← 511:Paibian 493:Drumian 484:Wuliuan 473:Stage 4 460:Stage 3 447:Stage 2 427:Early O 239:– 229:– 219:– 209:– 199:– 189:– 179:– 169:– 159:– 149:– 139:– 129:– 2399:  1552:  1352:  1221:data. 1182:zone. 1108:Naming 970:Formal 961:Series 857:Major 779:First 758:& 730:First 587:Orsten 570:  565:  560:  555:  550:  545:  540:  1438:(PDF) 1417:(PDF) 1389:(PDF) 1374:(PDF) 1276:(PDF) 1261:(PDF) 1031:China 951:Epoch 916:Earth 712:biota 691:biota 589:Fauna 1599:link 1570:link 1488:link 1350:ISSN 1201:and 1148:and 1136:and 1112:The 1071:2018 1000:None 48:Preκž’ 1550:PMC 1542:doi 1511:doi 1468:doi 1425:doi 1340:doi 1130:ICS 1100:of 989:of 987:FAD 927:ICS 878:ICS 792:SSF 752:SSF 2460:: 2415:Ga 2411:Ma 2407:ka 1619:. 1595:}} 1591:{{ 1566:}} 1562:{{ 1548:. 1536:. 1532:. 1507:28 1505:. 1484:}} 1480:{{ 1466:. 1462:. 1419:. 1404:^ 1382:31 1380:. 1376:. 1362:^ 1348:. 1336:13 1334:. 1330:. 1304:. 1291:^ 1269:42 1267:. 1263:. 1241:. 1156:. 1144:, 1029:, 1025:, 787:, 783:, 419:g. 400:g. 98:Pg 42:Ma 1811:e 1804:t 1797:v 1663:e 1656:t 1649:v 1601:) 1572:) 1558:. 1544:: 1538:9 1517:. 1513:: 1490:) 1476:. 1470:: 1447:. 1427:: 1398:. 1356:. 1342:: 1315:. 1285:. 1014:. 929:) 534:" 528:" 476:" 470:" 463:" 457:" 450:" 444:" 417:n 415:o 413:r 411:u 409:F 398:n 396:i 394:l 392:o 390:a 388:i 386:M 377:2 374:s 372:e 370:i 368:r 366:e 364:S 353:n 351:a 349:i 347:v 345:u 343:e 341:n 339:e 337:r 335:r 333:e 331:T 322:O 312:n 310:a 308:i 306:r 304:b 302:m 300:a 298:C 278:c 276:i 274:o 272:z 270:o 268:e 266:l 264:a 262:P 251:♇ 249:N 103:N 93:K 88:J 83:T 78:P 73:C 68:D 63:S 58:O 53:κž’ 20:)

Index

Second Cambrian epoch
Ma
Preκž’
κž’
O
S
D
C
P
T
J
K
Pg
N
N
♇

P
a
l
e
o
z
o
i
c

Ediacaran
C
a
m
b
r
i
a
n

O
T
e
r
r
e
n
e
u
v
i
a
n

S
e
r
i
e
s

2

M
i
a
o
l
i
n
g.

F
u
r
o
n
g.

Early O
Fortunian
Stage 2
Stage 3
Stage 4
Wuliuan
Drumian

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