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  • Historical:Ordovician System
    |tree22=Ordovician System |category2=Ordovician System
    11 KB (1,740 words) - 22:18, 6 December 2016
  • Ordovician System
    |category2=Ordovician System |tree22=Ordovician System
    12 KB (1,815 words) - 15:57, 12 January 2017

Page text matches

  • 7360
    #REDIRECT [[Ordovician System ]]
    32 bytes (3 words) - 23:54, 28 April 2016
  • File:Figure O-5.jpg
    Fig. O-5 -- Typical Ordovician fossils
    (2,132 × 3,308 (1.9 MB)) - 14:46, 4 April 2016
  • File:Figure O-4 imagemap.jpg
    Image map for the Ordovician System‏
    (600 × 959 (140 KB)) - 15:58, 22 December 2016
  • File:Figure O-1.jpg
    Fig O-1 -- Thickness of Ordovician System.
    (1,822 × 3,304 (929 KB)) - 14:43, 4 April 2016
  • File:Figure O-4.jpg
    Fig. O-4 -- Classification of the Ordovician System.
    (2,057 × 3,357 (799 KB)) - 14:45, 4 April 2016
  • Historical:Maysvillian Stage
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (222 words) - 20:47, 7 December 2016
  • Historical:Trentonian Stage
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (224 words) - 21:04, 7 December 2016
  • File:Figure C-1B.jpg
    Fig. Є-1B -- Cambrian-Ordovician unconformity showing well bedded Oneota Dolomite overlying massive Potosi D
    (1,509 × 2,000 (1.18 MB)) - 20:18, 6 April 2016
  • Historical:Richmondian Stage
    |tree22=Ordovician System |category2=Ordovician System
    1 KB (180 words) - 22:25, 6 December 2016
  • Historical:Chazyan Stage
    |tree22=Ordovician System |category2=Ordovician System
    1 KB (191 words) - 19:55, 21 December 2016
  • Historical:Edenian Stage
    |tree22=Ordovician System |category2=Ordovician System
    1 KB (206 words) - 20:50, 7 December 2016
  • Historical:Canadian Series
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (326 words) - 20:01, 21 December 2016
  • Historical:Tippecanoe Sequence
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (234 words) - 22:16, 6 December 2016
  • Historical:New Glarus Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (220 words) - 17:04, 20 December 2016
  • Historical:Sauk Sequence
    |tree23=Ordovician System |category3=Ordovician System
    2 KB (244 words) - 21:05, 6 December 2016
  • Historical:Blackriveran Stage
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (241 words) - 23:03, 13 December 2016
  • Historical:Dane Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (217 words) - 17:06, 20 December 2016
  • Historical:Blomeyer Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (216 words) - 16:52, 20 December 2016
  • Historical:Loughridge Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (235 words) - 00:14, 21 December 2016
  • Historical:Medusa Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (221 words) - 17:02, 20 December 2016
  • Historical:Blodgett Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (226 words) - 20:13, 21 December 2016
  • Historical:Castlewood Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (297 words) - 23:01, 13 December 2016
  • Historical:Clement Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (219 words) - 22:12, 19 December 2016
  • Historical:Chana Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (219 words) - 17:08, 20 December 2016
  • Historical:Oglesby Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (231 words) - 17:00, 20 December 2016
  • Historical:Kingdom Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (232 words) - 15:25, 21 December 2016
  • Historical:Tyson Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (235 words) - 22:51, 13 December 2016
  • Historical:Arsenal Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (241 words) - 20:15, 21 December 2016
  • Historical:Clermont Shale Member
    |tree22=Ordovician System |category2=Ordovician System
    1 KB (161 words) - 20:45, 7 December 2016
  • Historical:Walgreen Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (248 words) - 22:22, 19 December 2016
  • Historical:Hennepin Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (253 words) - 22:18, 20 December 2016
  • Historical:Abernathy Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (239 words) - 15:55, 21 December 2016
  • Historical:Garnavillo Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (238 words) - 22:48, 13 December 2016
  • Historical:Hely Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (236 words) - 22:09, 19 December 2016
  • Historical:Establishment Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (245 words) - 16:45, 20 December 2016
  • Historical:Defiance Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (257 words) - 15:23, 21 December 2016
  • Historical:Nokomis Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (257 words) - 03:37, 21 December 2016
  • Historical:Metz Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (261 words) - 00:13, 21 December 2016
  • Historical:Glencoe Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (324 words) - 22:59, 13 December 2016
  • Historical:Strawbridge Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (255 words) - 21:21, 14 December 2016
  • Historical:Fairplay Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (266 words) - 17:53, 13 December 2016
  • Historical:Gordonville Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (247 words) - 15:59, 21 December 2016
  • Historical:Hazel Green Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (241 words) - 22:26, 14 December 2016
  • Historical:Tonti Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (271 words) - 19:51, 21 December 2016
  • Historical:Beecher Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (262 words) - 17:56, 13 December 2016
  • Historical:Eagle Point Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (270 words) - 17:54, 13 December 2016
  • Historical:Sharpsboro Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (281 words) - 15:58, 21 December 2016
  • Historical:Girardeau Limestone
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (405 words) - 22:42, 6 December 2016
  • Historical:Wall Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (288 words) - 19:11, 8 December 2016
  • Historical:Sherwood Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (285 words) - 17:25, 13 December 2016
  • Historical:Stillman Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (244 words) - 22:18, 19 December 2016
  • Historical:Everett Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (275 words) - 22:32, 14 December 2016
  • Historical:Wyota Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (292 words) - 18:32, 8 December 2016
  • Historical:Elm Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (275 words) - 22:42, 14 December 2016
  • Historical:Hazelwood Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (264 words) - 16:41, 20 December 2016
  • Historical:Buckhorn Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (275 words) - 17:59, 13 December 2016
  • Historical:Mincke Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (269 words) - 21:41, 7 February 2017
  • Historical:Shullsburg Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (267 words) - 21:23, 14 December 2016
  • Historical:Mortimer Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (288 words) - 17:50, 13 December 2016
  • Maysvillian Stage
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (307 words) - 16:28, 12 January 2017
  • Historical:Daysville Dolomite Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (285 words) - 03:41, 21 December 2016
  • Historical:Everton Dolomite
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (294 words) - 19:57, 21 December 2016
  • Historical:Dement Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (268 words) - 22:26, 19 December 2016
  • Historical:Briton Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (280 words) - 22:33, 19 December 2016
  • Historical:Eldena Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (276 words) - 22:47, 14 December 2016
  • Historical:Moredock Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (286 words) - 17:28, 13 December 2016
  • Historical:Kress Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (301 words) - 19:53, 21 December 2016
  • Historical:Boles Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (285 words) - 15:27, 21 December 2016
  • Historical:Sinsinawa Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (292 words) - 18:20, 8 December 2016
  • Historical:Rivoli Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (306 words) - 17:48, 13 December 2016
  • Historical:Ancell Group
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (315 words) - 22:20, 20 December 2016
  • Historical:Stewartville Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (306 words) - 21:58, 8 February 2018
  • Historical:Augusta Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (302 words) - 18:32, 12 January 2017
  • Historical:Cape Limestone
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (375 words) - 21:00, 7 December 2016
  • Historical:Matson Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (304 words) - 03:31, 21 December 2016
  • Historical:Thebes Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (303 words) - 22:53, 7 December 2016
  • Historical:Forreston Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (291 words) - 21:53, 19 December 2016
  • Historical:Hunton Limestone Megagroup
    ...northern region and in small areas in western and southern Illinois where Ordovician and older rocks are exposed. The megagroup thickens from those areas to ove ...stem are not included in the megagroup, whereas limestone in the uppermost Ordovician strata is included. At the top of the Hunton, shale of Middle Devonian age,
    3 KB (455 words) - 14:51, 10 January 2017
  • Historical:Dutchtown Limestone
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (396 words) - 15:56, 21 December 2016
  • Historical:Victory Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (312 words) - 21:55, 19 December 2016
  • Historical:New Richmond Sandstone
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (409 words) - 20:09, 21 December 2016
  • Trentonian Stage
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (304 words) - 16:37, 12 January 2017
  • Historical:Brickeys Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (327 words) - 16:48, 20 December 2016
  • Historical:Harmony Hill Shale Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (332 words) - 00:10, 21 December 2016
  • Historical:Kimmswick Subgroup
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (350 words) - 17:35, 8 December 2016
  • Historical:Orchard Creek Shale Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (336 words) - 20:52, 7 December 2016
  • Canadian Series
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (400 words) - 19:59, 12 January 2017
  • Historical:St. James Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (339 words) - 17:57, 13 December 2016
  • Historical:Starved Rock Sandstone Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (361 words) - 16:06, 21 December 2016
  • Historical:Glenhaven Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (345 words) - 22:46, 13 December 2016
  • Historical:Decorah Subgroup
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (472 words) - 18:02, 13 December 2016
  • Historical:Spechts Ferry Formation
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (584 words) - 22:56, 13 December 2016
  • Historical:Scales Shale
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (376 words) - 22:46, 6 December 2016
  • Historical:Cincinnatian Series
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (642 words) - 22:23, 6 December 2016
  • Historical:Maquoketa Shale Group
    |tree22=Ordovician System |category2=Ordovician System
    6 KB (800 words) - 22:27, 6 December 2016
  • Richmondian Stage
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (266 words) - 16:04, 12 January 2017
  • Historical:New London Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (374 words) - 19:09, 8 December 2016
  • Historical:Plattin Subgroup
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (382 words) - 21:13, 14 December 2016
  • Historical:Oneota Dolomite
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (472 words) - 20:11, 21 December 2016
  • Historical:Alexandrian Series
    ...owed suggestions by several authors and placed the Girardeau, also, in the Ordovician.
    3 KB (403 words) - 20:48, 4 January 2017
  • Chazyan Stage
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (267 words) - 19:57, 12 January 2017
  • Castlewood Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (384 words) - 17:27, 12 January 2017
  • Historical:Pecatonica Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (483 words) - 16:57, 20 December 2016
  • Edenian Stage
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (296 words) - 16:32, 12 January 2017
  • Historical:Champlainian Series
    |tree22=Ordovician System |category2=Ordovician System
    5 KB (735 words) - 21:01, 7 December 2016
  • Historical:Brainard Shale
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (292 words) - 22:38, 6 December 2016
  • New Glarus Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (295 words) - 18:10, 12 January 2017
  • Girardeau Limestone
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (482 words) - 16:13, 12 January 2017
  • Dane Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (291 words) - 18:10, 12 January 2017
  • Historical:Kings Lake Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (444 words) - 22:49, 13 December 2016
  • Tippecanoe Sequence
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (312 words) - 18:04, 11 January 2017
  • Historical:Gunter Sandstone
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (273 words) - 20:18, 21 December 2016
  • Glencoe Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (405 words) - 17:25, 12 January 2017
  • Blackriveran Stage
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (317 words) - 17:27, 12 January 2017
  • Blomeyer Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (291 words) - 18:07, 12 January 2017
  • Medusa Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (296 words) - 18:09, 12 January 2017
  • Kingdom Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (314 words) - 18:29, 12 January 2017
  • Loughridge Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (319 words) - 18:22, 12 January 2017
  • Historical:Elgin Shale Member
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (332 words) - 20:49, 7 December 2016
  • Blodgett Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (305 words) - 20:06, 12 January 2017
  • Chana Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (294 words) - 18:10, 12 January 2017
  • Oglesby Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (306 words) - 18:07, 12 January 2017
  • Clement Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (294 words) - 18:03, 12 January 2017
  • Sauk Sequence
    |category3=Ordovician System |tree23=Ordovician System
    3 KB (322 words) - 20:40, 11 January 2017
  • Defiance Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (325 words) - 18:28, 12 January 2017
  • Arsenal Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (316 words) - 20:04, 12 January 2017
  • Tyson Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (319 words) - 17:22, 12 January 2017
  • Walgreen Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (323 words) - 18:03, 12 January 2017
  • Hennepin Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (328 words) - 18:17, 12 January 2017
  • Historical:Guttenberg Formation
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (570 words) - 22:44, 13 December 2016
  • Historical:Dubuque Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (430 words) - 17:32, 8 December 2016
  • Historical:Ottawa Limestone Megagroup
    |tree22=Ordovician System |category2=Ordovician System
    2 KB (297 words) - 20:57, 7 December 2016
  • Hely Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (311 words) - 18:02, 12 January 2017
  • Abernathy Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (322 words) - 18:34, 12 January 2017
  • Nokomis Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (337 words) - 18:26, 12 January 2017
  • Garnavillo Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (321 words) - 17:20, 12 January 2017
  • Cape Limestone
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (448 words) - 16:35, 12 January 2017
  • Establishment Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (320 words) - 18:06, 12 January 2017
  • Strawbridge Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (338 words) - 17:33, 12 January 2017
  • Fairplay Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (346 words) - 16:59, 12 January 2017
  • Metz Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (342 words) - 18:21, 12 January 2017
  • Hazel Green Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (326 words) - 17:35, 12 January 2017
  • Gordonville Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (330 words) - 18:37, 12 January 2017
  • Tonti Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (356 words) - 19:58, 12 January 2017
  • Historical:Glenwood Formation
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (608 words) - 04:06, 21 December 2016
  • Beecher Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (343 words) - 17:01, 12 January 2017
  • Everett Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (345 words) - 17:58, 12 January 2017
  • Buckhorn Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (354 words) - 17:16, 12 January 2017
  • Eagle Point Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (352 words) - 17:01, 12 January 2017
  • Historical:Neda Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (455 words) - 18:08, 7 December 2016
  • Historical:Nachusa Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (494 words) - 22:29, 14 December 2016
  • Stillman Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (319 words) - 18:03, 12 January 2017
  • Elm Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (348 words) - 17:59, 12 January 2017
  • Sharpsboro Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (364 words) - 18:36, 12 January 2017
  • Dutchtown Limestone
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (466 words) - 18:34, 12 January 2017
  • Sherwood Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (366 words) - 16:56, 12 January 2017
  • Historical:Joachim Dolomite
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (615 words) - 22:31, 20 December 2016
  • Wall Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (369 words) - 16:55, 12 January 2017
  • Hazelwood Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (339 words) - 18:05, 12 January 2017
  • Main Page
    ::[[Search:Ordovician System‏‎|Ordovician System]] rect 170 379 373 405 [[Search:Ordovician System]]
    4 KB (531 words) - 22:04, 31 August 2023
  • Wyota Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (373 words) - 16:49, 12 January 2017
  • Hunton Limestone Megagroup
    ...stem are not included in the megagroup, whereas limestone in the uppermost Ordovician strata is included. At the top of the Hunton, shale of Middle Devonian age, ...northern region and in small areas in western and southern Illinois where Ordovician and older rocks are exposed. The megagroup thickens from those areas to ove
    4 KB (530 words) - 17:24, 11 January 2017
  • Eldena Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (349 words) - 17:59, 12 January 2017
  • Moredock Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (359 words) - 16:57, 12 January 2017
  • Everton Dolomite
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (368 words) - 19:57, 12 January 2017
  • Dement Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (343 words) - 18:04, 12 January 2017
  • Mortimer Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (369 words) - 16:59, 12 January 2017
  • Ancell Group
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (387 words) - 18:17, 12 January 2017
  • Historical:Grand Detour Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (513 words) - 21:51, 19 December 2016
  • Daysville Dolomite Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (366 words) - 18:27, 12 January 2017
  • Shullsburg Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (349 words) - 17:33, 12 January 2017
  • Briton Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (355 words) - 18:05, 12 January 2017
  • Sinsinawa Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (375 words) - 16:46, 12 January 2017
  • Rivoli Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (386 words) - 16:58, 12 January 2017
  • Historical:Wise Lake Formation
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (525 words) - 17:37, 8 December 2016
  • New Richmond Sandstone
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (481 words) - 20:00, 12 January 2017
  • Boles Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (366 words) - 18:30, 12 January 2017
  • Maquoketa Shale Group
    |category2=Ordovician System |tree22=Ordovician System
    6 KB (872 words) - 16:05, 12 January 2017
  • Kress Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (387 words) - 19:56, 12 January 2017
  • Thebes Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (376 words) - 16:33, 12 January 2017
  • Spechts Ferry Formation
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (660 words) - 17:23, 12 January 2017
  • Matson Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (384 words) - 18:23, 12 January 2017
  • Augusta Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (383 words) - 18:32, 12 January 2017
  • Historical:Platteville Group
    |tree22=Ordovician System |category2=Ordovician System
    5 KB (691 words) - 21:10, 14 December 2016
  • Stewartville Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (390 words) - 21:57, 8 February 2018
  • Forreston Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (366 words) - 18:01, 12 January 2017
  • Harmony Hill Shale Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (410 words) - 18:21, 12 January 2017
  • Victory Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (387 words) - 18:01, 12 January 2017
  • Brickeys Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (401 words) - 18:07, 12 January 2017
  • Cincinnatian Series
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (719 words) - 16:01, 12 January 2017
  • Historical:Ordovician System
    |tree22=Ordovician System |category2=Ordovician System
    11 KB (1,740 words) - 22:18, 6 December 2016
  • Historical:Prairie du Chien Group
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (404 words) - 20:05, 21 December 2016
  • Decorah Subgroup
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (550 words) - 17:16, 12 January 2017
  • Orchard Creek Shale Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (410 words) - 16:33, 12 January 2017
  • Historical:Fort Atkinson Limstone
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (357 words) - 22:44, 6 December 2016
  • Clermont Shale Member
    |category2=Ordovician System |tree22=Ordovician System
    2 KB (247 words) - 16:25, 12 January 2017
  • Historical:Galena Group
    |tree22=Ordovician System |category2=Ordovician System
    5 KB (726 words) - 16:41, 12 January 2017
  • St. James Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (418 words) - 17:02, 12 January 2017
  • Starved Rock Sandstone Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (445 words) - 18:38, 12 January 2017
  • Champlainian Series
    |category2=Ordovician System |tree22=Ordovician System
    6 KB (808 words) - 16:36, 12 January 2017
  • Historical:Quimbys Mill Formation
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (558 words) - 21:19, 14 December 2016
  • Oneota Dolomite
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (543 words) - 20:05, 12 January 2017
  • Pecatonica Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (556 words) - 18:08, 12 January 2017
  • Glenhaven Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (428 words) - 17:19, 12 January 2017
  • Kimmswick Subgroup
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (472 words) - 19:56, 23 February 2024
  • Scales Shale
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (453 words) - 16:21, 12 January 2017
  • Historical:Eminence Formation
    ...the Illinois Basin was probably essentially continuous from Cambrian into Ordovician time. In the extreme northwestern part of Illinois, the Eminence Formation BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    3 KB (419 words) - 15:53, 23 November 2016
  • New London Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (456 words) - 16:50, 12 January 2017
  • Alexandrian Series
    ...owed suggestions by several authors and placed the Girardeau, also, in the Ordovician.
    4 KB (478 words) - 18:34, 11 January 2017
  • Plattin Subgroup
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (457 words) - 17:29, 12 January 2017
  • Historical:Dunleith Formation
    |tree22=Ordovician System |category2=Ordovician System
    5 KB (788 words) - 18:23, 8 December 2016
  • Guttenberg Formation
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (645 words) - 17:17, 12 January 2017
  • Ordovician System
    |category2=Ordovician System |tree22=Ordovician System
    12 KB (1,815 words) - 15:57, 12 January 2017
  • Kings Lake Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (519 words) - 17:20, 12 January 2017
  • Historical:Potosi Dolomite
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of GUTSTADT, A. M., 1958a, Cambrian and Ordovician stratigraphy and oil and gas possibilities in Indiana: Indiana Geological S
    4 KB (585 words) - 16:52, 28 November 2016
  • Historical:St. Peter Sandstone
    |tree22=Ordovician System |category2=Ordovician System
    5 KB (746 words) - 16:01, 21 December 2016
  • Glenwood Formation
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (682 words) - 18:18, 12 January 2017
  • Dubuque Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (504 words) - 16:47, 12 January 2017
  • Joachim Dolomite
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (690 words) - 18:18, 12 January 2017
  • Platteville Group
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (759 words) - 17:29, 12 January 2017
  • Neda Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (531 words) - 16:07, 12 January 2017
  • Nachusa Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (568 words) - 17:58, 12 January 2017
  • Historical:Shakopee Dolomite
    |tree22=Ordovician System |category2=Ordovician System
    4 KB (640 words) - 20:07, 21 December 2016
  • Wise Lake Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (600 words) - 16:44, 12 January 2017
  • Grand Detour Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (585 words) - 18:01, 12 January 2017
  • Mincke Member
    |category2=Ordovician System TEMPLETON, J. S., and H. B. WILLMAN, 1963, Champlainian Series (Middle Ordovician) in Illinois: Illinois State Geological Survey Bulletin 89, 260 p.
    3 KB (350 words) - 17:23, 12 January 2017
  • Brainard Shale
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (371 words) - 16:10, 12 January 2017
  • Historical:Mifflin Formation
    |tree22=Ordovician System |category2=Ordovician System
    3 KB (516 words) - 22:29, 19 December 2016
  • Gunter Sandstone
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (348 words) - 20:06, 12 January 2017
  • Galena Group
    |category2=Ordovician System |tree22=Ordovician System
    6 KB (813 words) - 20:45, 22 October 2019
  • Historical:Mooseheart Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (167 words) - 18:15, 28 November 2016
  • Ottawa Limestone Megagroup
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (372 words) - 16:34, 12 January 2017
  • Elgin Shale Member
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (411 words) - 16:29, 12 January 2017
  • Historical:Marywood Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (190 words) - 18:17, 28 November 2016
  • Quimbys Mill Formation
    |category2=Ordovician System |tree22=Ordovician System
    4 KB (623 words) - 17:30, 12 January 2017
  • Historical:Fox Valley Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (189 words) - 18:20, 28 November 2016
  • Historical:Paleozoic Erathem
    ..., 1838)-- originally included only the rocks now referred to the Cambrian, Ordovician, Silurian, and Devonian Systems, but the definition of the name was expande ...racterized the Paleozoic Era. Marine vertebrates (fishes) developed during Ordovician time, but it was not until Devonian time that plants became abundant enough
    4 KB (614 words) - 17:47, 22 November 2016
  • Historical:Buelter Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (181 words) - 20:41, 28 November 2016
  • Dunleith Formation
    |category2=Ordovician System |tree22=Ordovician System
    6 KB (860 words) - 16:48, 12 January 2017
  • St. Peter Sandstone
    |category2=Ordovician System |tree22=Ordovician System
    6 KB (814 words) - 18:37, 12 January 2017
  • Historical:Mt. Simon Sandstone
    ...er grained, more poorly sorted, and more angular than younger Cambrian and Ordovician sandstones. The pebbles, mostly quartz, are as much as 8 mm in diameter in BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    4 KB (586 words) - 21:10, 28 November 2016
  • Historical:Momence Sandstone Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (203 words) - 15:59, 23 November 2016
  • Historical:Elmhurst Sandstone Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (193 words) - 21:07, 28 November 2016
  • Fort Atkinson Limstone
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (434 words) - 16:19, 12 January 2017
  • Prairie du Chien Group
    |category2=Ordovician System |tree22=Ordovician System
    3 KB (482 words) - 20:01, 12 January 2017
  • Historical:Lombard Dolomite Member
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    1 KB (205 words) - 21:04, 28 November 2016
  • Potosi Dolomite
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of GUTSTADT, A. M., 1958a, Cambrian and Ordovician stratigraphy and oil and gas possibilities in Indiana: Indiana Geological S
    5 KB (657 words) - 20:50, 11 January 2017
  • Historical:Dresbachian Stage
    BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    2 KB (220 words) - 20:43, 28 November 2016
  • Eminence Formation
    ...the Illinois Basin was probably essentially continuous from Cambrian into Ordovician time. In the extreme northwestern part of Illinois, the Eminence Formation BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of
    4 KB (500 words) - 20:44, 11 January 2017
  • Shakopee Dolomite
    |category2=Ordovician System |tree22=Ordovician System
    5 KB (710 words) - 20:00, 12 January 2017

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