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  1. Gentry Coal Bed‏‎ (7 revisions)
  2. Galatia Channel:Danville Coal‏‎ (7 revisions)
  3. Dykersburg Shale Member‏‎ (7 revisions)
  4. Galatia Channel:Herrin Coal, Energy Shale, and Walshville Channel‏‎ (7 revisions)
  5. Galatia Channel:Murphysboro Coal and Oraville Channel‏‎ (6 revisions)
  6. Trivoli Sandstone Member‏‎ (6 revisions)
  7. Galatia Channel:Model of Channel Development‏‎ (6 revisions)
  8. Unnamed clastic member - Carbondale Formation‏‎ (6 revisions)
  9. Pleasantview Sandstone Member‏‎ (6 revisions)
  10. Wiley Coal Member‏‎ (6 revisions)
  11. Abingdon Coal Member‏‎ (6 revisions)
  12. Galatia Channel:Baker Coal and Winslow-Henderson Channel‏‎ (6 revisions)
  13. Francis Creek Shale Member‏‎ (6 revisions)
  14. Pounds Sandstone Member‏‎ (6 revisions)
  15. Covel Conglomerate Bed‏‎ (6 revisions)
  16. Sebree Sandstone Member‏‎ (6 revisions)
  17. Dekoven Coal Member‏‎ (6 revisions)
  18. Coxville Sandstone Member‏‎ (6 revisions)
  19. Colchester Coal Member‏‎ (6 revisions)
  20. Velpen Limestone Member‏‎ (5 revisions)
  21. Hanover Limestone Member‏‎ (5 revisions)
  22. Omphghent member‏‎ (5 revisions)
  23. 0000‏‎ (5 revisions)
  24. Lusk Shale Member‏‎ (5 revisions)
  25. Kerton Creek coal bed‏‎ (5 revisions)
  26. Delafield Member‏‎ (5 revisions)
  27. Spring Lake Coal Member‏‎ (5 revisions)
  28. Bucktown Coal Member‏‎ (5 revisions)
  29. Greenbush Coal Member‏‎ (5 revisions)
  30. Purington Shale Member‏‎ (5 revisions)
  31. Galatia Channel:Colchester Coal and Francis Creek Shale‏‎ (5 revisions)
  32. Galatia Channel:Rapid Transgression, Gradual Regression‏‎ (5 revisions)
  33. Herrin Coal Member‏‎ (5 revisions)
  34. Equality Formation‏‎ (4 revisions)
  35. Percy Limestone Member‏‎ (4 revisions)
  36. Galatia Channel:Relationship of Effingham and Galatia Channels‏‎ (4 revisions)
  37. Palzo Sandstone Member‏‎ (4 revisions)
  38. Precambrian Erathem‏‎ (4 revisions)
  39. Carmi Member‏‎ (4 revisions)
  40. Unnamed gray shale member - Carbondale Formation‏‎ (4 revisions)
  41. Big Creek Shale Member‏‎ (4 revisions)
  42. Galatia Member‏‎ (4 revisions)
  43. Browning Sandstone Member‏‎ (4 revisions)
  44. Ste. Genevieve Limestone‏‎ (4 revisions)
  45. Abbott Formation‏‎ (4 revisions)
  46. Houchin Creek Coal Member‏‎ (4 revisions)
  47. Roodhouse coal bed‏‎ (4 revisions)
  48. Cave Hill Shale Member‏‎ (4 revisions)
  49. Spoon Formation‏‎ (4 revisions)
  50. Isabel Sandstone Member‏‎ (4 revisions)
  51. Lagonda Member‏‎ (4 revisions)
  52. Modern Soil‏‎ (4 revisions)
  53. Stendal Limestone Member‏‎ (3 revisions)
  54. Breezy Hill Limestone Member‏‎ (3 revisions)
  55. Vermilionville Sandstone Member‏‎ (3 revisions)
  56. Galatia Channel:Peat Developed at Lowstand‏‎ (3 revisions)
  57. Stewartville Member‏‎ (3 revisions)
  58. Bevier Coal Member or Bed‏‎ (3 revisions)
  59. Beech Creek Limestone‏‎ (3 revisions)
  60. Antioch Limestone Member‏‎ (3 revisions)
  61. Oak Grove Limestone Member‏‎ (3 revisions)
  62. Jake Creek Sandstone Member‏‎ (3 revisions)
  63. Shawneetown Coal Member‏‎ (3 revisions)
  64. Briar Hill Coal Member‏‎ (3 revisions)
  65. Quaternary System‏‎ (3 revisions)
  66. Energy Shale Member‏‎ (3 revisions)
  67. Lowell Coal Member‏‎ (3 revisions)
  68. Turner Mine Shale Member‏‎ (3 revisions)
  69. Mecca Quarry Shale Member‏‎ (3 revisions)
  70. Big Clifty Sandstone Member‏‎ (3 revisions)
  71. Anna Shale Member‏‎ (3 revisions)
  72. Alum Cave Limestone Member‏‎ (3 revisions)
  73. Fraileys Shale‏‎ (3 revisions)
  74. Wheeler Coal Member or Bed‏‎ (3 revisions)
  75. Excello Shale Member‏‎ (3 revisions)
  76. Lingle Formation‏‎ (3 revisions)
  77. Oligocene Series‏‎ (3 revisions)
  78. Canton Shale Member‏‎ (3 revisions)
  79. Walshville Member‏‎ (3 revisions)
  80. Summum Coal Member‏‎ (3 revisions)
  81. O'Nan Coal Member‏‎ (3 revisions)
  82. St. David Limestone Member‏‎ (3 revisions)
  83. Bailey Limestone‏‎ (2 revisions)
  84. South Haven Member‏‎ (2 revisions)
  85. St. Laurent Formation‏‎ (2 revisions)
  86. Ashmore Tongue‏‎ (2 revisions)
  87. Lake Forest Member‏‎ (2 revisions)
  88. Renault Limestone‏‎ (2 revisions)
  89. Grand Tower Limestone‏‎ (2 revisions)
  90. Wilmette Bed‏‎ (2 revisions)
  91. Peddicord Tongue‏‎ (2 revisions)
  92. Borden Siltstone‏‎ (2 revisions)
  93. St. Louis Limestone‏‎ (2 revisions)
  94. Aux Vases Sandstone‏‎ (2 revisions)
  95. Ravinia Sand Member‏‎ (2 revisions)
  96. Bethel Sandstone‏‎ (2 revisions)
  97. Moccasin Springs Formation‏‎ (2 revisions)
  98. Karnak Limestone Member‏‎ (2 revisions)
  99. Tuscaloosa Formation‏‎ (2 revisions)
  100. Haney Limestone‏‎ (2 revisions)
  101. Parkland Sand‏‎ (2 revisions)
  102. Holocene Series‏‎ (2 revisions)
  103. Kewanee Group‏‎ (2 revisions)
  104. Richland Loess‏‎ (2 revisions)
  105. Little Vermilion Limestone Member‏‎ (2 revisions)
  106. Cypress Sandstone‏‎ (2 revisions)
  107. Yankeetown Sandstone‏‎ (2 revisions)
  108. Mackinaw Member‏‎ (2 revisions)
  109. Lake Michigan Member‏‎ (2 revisions)
  110. Trowbridge Coal Member‏‎ (2 revisions)
  111. Kimmswick Subgroup‏‎ (2 revisions)
  112. Ullin Limestone‏‎ (2 revisions)
  113. New Albany Shale Group‏‎ (2 revisions)
  114. Downeys Bluff Limestone‏‎ (2 revisions)
  115. Lake Michigan Formation‏‎ (2 revisions)
  116. Glen Park Formation‏‎ (2 revisions)
  117. Winnetka Member‏‎ (2 revisions)
  118. Peoria Silt‏‎ (2 revisions)
  119. Waukegan Member‏‎ (2 revisions)
  120. Fredonia Limestone Member‏‎ (2 revisions)
  121. Spar Mountain Sandstone Member‏‎ (2 revisions)
  122. Ridenhower Formation‏‎ (2 revisions)
  123. Galena Group‏‎ (2 revisions)
  124. Sheboygan Member‏‎ (2 revisions)
  125. West Franklin Limestone Member‏‎ (1 revision)
  126. Chazyan Stage‏‎ (1 revision)
  127. Potsdam Sandstone Megagroup‏‎ (1 revision)
  128. New Haven Coal Member‏‎ (1 revision)
  129. Fort Atkinson Limstone‏‎ (1 revision)
  130. Edenian Stage‏‎ (1 revision)
  131. Embayment Megagroup‏‎ (1 revision)
  132. Sweeney Formation‏‎ (1 revision)
  133. Cohn Coal Member‏‎ (1 revision)
  134. Toulon Member‏‎ (1 revision)
  135. Clore Formation‏‎ (1 revision)
  136. Livingston Limestone Member‏‎ (1 revision)
  137. Middle Devonian Series‏‎ (1 revision)
  138. Morrowan Series‏‎ (1 revision)
  139. Loughridge Sandstone Member‏‎ (1 revision)
  140. Clear Creek Chert‏‎ (1 revision)
  141. Garnavillo Member‏‎ (1 revision)
  142. Cedar Valley Limestone‏‎ (1 revision)
  143. Saverton Shale‏‎ (1 revision)
  144. Little Bear Soil‏‎ (1 revision)
  145. Robein Member‏‎ (1 revision)
  146. Cheltenham Clay Member‏‎ (1 revision)
  147. Golconda Group‏‎ (1 revision)
  148. Carboniferous System‏‎ (1 revision)
  149. Mississippian Subsystem‏‎ (1 revision)
  150. Moredock Member‏‎ (1 revision)
  151. Sinsinawa Member‏‎ (1 revision)
  152. Alburnett Formation‏‎ (1 revision)
  153. Victory Member‏‎ (1 revision)
  154. Clermont Shale Member‏‎ (1 revision)
  155. Lovell Member‏‎ (1 revision)
  156. Woodbury Limestone Member‏‎ (1 revision)
  157. Murphysboro Coal Member‏‎ (1 revision)
  158. Richmondian Stage‏‎ (1 revision)
  159. Jules Soil‏‎ (1 revision)
  160. Shelbyville Coal Member‏‎ (1 revision)
  161. Sterling Till Member‏‎ (1 revision)
  162. Scottville Limestone Member‏‎ (1 revision)
  163. Baylis Formation‏‎ (1 revision)
  164. Chana Member‏‎ (1 revision)
  165. Duncan Mills Member‏‎ (1 revision)
  166. Owl Creek Formation‏‎ (1 revision)
  167. Guttenberg Formation‏‎ (1 revision)
  168. Blanding Formation‏‎ (1 revision)
  169. Lacon Formation‏‎ (1 revision)
  170. Hunton Limestone Megagroup‏‎ (1 revision)
  171. Stillman Member‏‎ (1 revision)
  172. St. Peter Sandstone‏‎ (1 revision)
  173. Nachusa Formation‏‎ (1 revision)
  174. Establishment Member‏‎ (1 revision)
  175. Maquoketa Shale Group‏‎ (1 revision)
  176. Edgewood Formation‏‎ (1 revision)
  177. Sorento Limestone Member‏‎ (1 revision)
  178. Assumption Coal Member‏‎ (1 revision)
  179. Piatt Member‏‎ (1 revision)
  180. Trempealeauan Stage‏‎ (1 revision)
  181. Paleocene Series‏‎ (1 revision)
  182. Sherwood Member‏‎ (1 revision)
  183. Silurian System‏‎ (1 revision)
  184. Plano Silt Member‏‎ (1 revision)
  185. Effingham Limestone Member‏‎ (1 revision)
  186. Cooper Limestone Member‏‎ (1 revision)
  187. Lawson Shale Member‏‎ (1 revision)
  188. Gunn Member‏‎ (1 revision)
  189. St. James Member‏‎ (1 revision)
  190. Scottsburg Limestone Member‏‎ (1 revision)
  191. Conant Limestone Member‏‎ (1 revision)
  192. Galum Limestone Member‏‎ (1 revision)
  193. Beaver Bend Limestone Member‏‎ (1 revision)
  194. Prairie du Chien Group‏‎ (1 revision)
  195. Cora Limestone Member‏‎ (1 revision)
  196. Dutchtown Limestone‏‎ (1 revision)
  197. Arsenal Member‏‎ (1 revision)
  198. Lower Devonian Series‏‎ (1 revision)
  199. Desmoinesian Series‏‎ (1 revision)
  200. Reynoldsburg Coal Member‏‎ (1 revision)
  201. Shakopee Dolomite‏‎ (1 revision)
  202. Radnor Till Member‏‎ (1 revision)
  203. Allenby Coal Member‏‎ (1 revision)
  204. Teneriffe Silt‏‎ (1 revision)
  205. Walnut Grove Limestone Member‏‎ (1 revision)
  206. Kankakee Formation‏‎ (1 revision)
  207. Absaroka Sequence‏‎ (1 revision)
  208. Ramp Creek Limestone Member‏‎ (1 revision)
  209. Racine Formation‏‎ (1 revision)
  210. Eldena Member‏‎ (1 revision)
  211. Grigg tongue‏‎ (1 revision)
  212. Levias Limestone Member‏‎ (1 revision)
  213. Devonian System‏‎ (1 revision)
  214. Kress Member‏‎ (1 revision)
  215. Oak formation‏‎ (1 revision)
  216. Pleistocene Series‏‎ (1 revision)
  217. Brandon Bridge Member‏‎ (1 revision)
  218. Lake Creek Coal Member‏‎ (1 revision)
  219. Pennsylvanian Subsystem‏‎ (1 revision)
  220. Marywood Member‏‎ (1 revision)
  221. Glencoe Member‏‎ (1 revision)
  222. Crane Member‏‎ (1 revision)
  223. State Pond Member‏‎ (1 revision)
  224. Blocher Shale‏‎ (1 revision)
  225. Glen Dean Limestone‏‎ (1 revision)
  226. Chalfin Member‏‎ (1 revision)
  227. Bond Formation‏‎ (1 revision)
  228. Troutman Member‏‎ (1 revision)
  229. Wapsipinicon Limestone‏‎ (1 revision)
  230. Eminence Formation‏‎ (1 revision)
  231. Markgraf Member‏‎ (1 revision)
  232. McNairy Formation‏‎ (1 revision)
  233. Manley Coal Member‏‎ (1 revision)
  234. Proviso Siltstone Member‏‎ (1 revision)
  235. Greenup Limestone Member‏‎ (1 revision)
  236. Argyle Till Member‏‎ (1 revision)
  237. Kenwood Member‏‎ (1 revision)
  238. Snider Till Member‏‎ (1 revision)
  239. Sharpsboro Member‏‎ (1 revision)
  240. Yorkville Member‏‎ (1 revision)
  241. Mortimer Member‏‎ (1 revision)
  242. West Lebanon Formation‏‎ (1 revision)
  243. Delavan Member‏‎ (1 revision)
  244. Capron Till Member‏‎ (1 revision)
  245. Harmattan Till Member‏‎ (1 revision)
  246. Winslow Till Member‏‎ (1 revision)
  247. Fults Member‏‎ (1 revision)
  248. Curlew Limestone Member‏‎ (1 revision)
  249. New London Member‏‎ (1 revision)
  250. Coggan Member‏‎ (1 revision)
  251. West Baden Group‏‎ (1 revision)
  252. Plattin Subgroup‏‎ (1 revision)
  253. Clement Member‏‎ (1 revision)
  254. Gimlet Sandstone Member‏‎ (1 revision)
  255. Franconia Formation‏‎ (1 revision)
  256. Sankoty Sand Member‏‎ (1 revision)
  257. Trentonian Stage‏‎ (1 revision)
  258. Harkness Silt Member‏‎ (1 revision)
  259. Abernathy Member‏‎ (1 revision)
  260. Pecatonica Formation‏‎ (1 revision)
  261. Sauk Sequence‏‎ (1 revision)
  262. Petersburg Silt‏‎ (1 revision)
  263. Finnie Sandstone Member‏‎ (1 revision)
  264. Strawbridge Member‏‎ (1 revision)
  265. Two Rivers Member‏‎ (1 revision)
  266. Coralville Member‏‎ (1 revision)
  267. Everton Dolomite‏‎ (1 revision)
  268. Eocene Series‏‎ (1 revision)
  269. Kewaunee Formation‏‎ (1 revision)
  270. Solon Member‏‎ (1 revision)
  271. Rendleman Oolite Bed‏‎ (1 revision)
  272. Pond Creek Coal Member‏‎ (1 revision)
  273. Porters Creek Formation‏‎ (1 revision)
  274. Gila Limestone Member‏‎ (1 revision)
  275. Tertiary System‏‎ (1 revision)
  276. Noix Oolite Member‏‎ (1 revision)
  277. Cenozoic Erathem‏‎ (1 revision)
  278. Inglefield Sandstone Member‏‎ (1 revision)
  279. Prospect Hill Siltstone‏‎ (1 revision)
  280. Coffeen Limestone Member‏‎ (1 revision)
  281. Sweetland Creek Shale‏‎ (1 revision)
  282. Cayugan Series‏‎ (1 revision)
  283. Stonefort Limestone Member‏‎ (1 revision)
  284. Pearl Formation‏‎ (1 revision)
  285. Kinkaid Limestone‏‎ (1 revision)
  286. Murray Bluff Sandstone Member‏‎ (1 revision)
  287. Walgreen Member‏‎ (1 revision)
  288. Markham Silt Member‏‎ (1 revision)
  289. St. Clair Limestone‏‎ (1 revision)
  290. Blackriveran Stage‏‎ (1 revision)
  291. Louisiana Limestone‏‎ (1 revision)
  292. Metz Member‏‎ (1 revision)
  293. Shorewood Member‏‎ (1 revision)
  294. Bernadotte Sandstone Member‏‎ (1 revision)
  295. Bankston Fork Limestone Member‏‎ (1 revision)
  296. Sangamon Soil‏‎ (1 revision)
  297. Hermon Coal Member‏‎ (1 revision)
  298. Ordovician System‏‎ (1 revision)
  299. Daysville Dolomite Member‏‎ (1 revision)
  300. Gulfian Series‏‎ (1 revision)
  301. Ancell Group‏‎ (1 revision)
  302. Willis Coal Member‏‎ (1 revision)
  303. Negli Creek Limestone Member‏‎ (1 revision)
  304. Buelter Member‏‎ (1 revision)
  305. Croixan Series‏‎ (1 revision)
  306. Rock Branch Coal Member‏‎ (1 revision)
  307. Rapid Member‏‎ (1 revision)
  308. Calhoun Coal Member‏‎ (1 revision)
  309. Walche Limestone Member‏‎ (1 revision)
  310. Womac Coal Member‏‎ (1 revision)
  311. Keokuk Limestone‏‎ (1 revision)
  312. Mesozoic Erathem‏‎ (1 revision)
  313. Reelsville Limestone Member‏‎ (1 revision)
  314. Mt. Simon Sandstone‏‎ (1 revision)
  315. Kings Lake Formation‏‎ (1 revision)
  316. Shoal Creek Limestone Member‏‎ (1 revision)
  317. Enion Formation‏‎ (1 revision)
  318. Hardinsburg Sandstone‏‎ (1 revision)
  319. Tippecanoe Sequence‏‎ (1 revision)
  320. Burlington Limestone‏‎ (1 revision)
  321. Tete de Morts Formation‏‎ (1 revision)
  322. Babylon Sandstone Member‏‎ (1 revision)
  323. Wise Lake Formation‏‎ (1 revision)
  324. McClearys Bluff Coal Member‏‎ (1 revision)
  325. Grover Gravel‏‎ (1 revision)
  326. Brush Coal Member‏‎ (1 revision)
  327. Briton Member‏‎ (1 revision)
  328. Wadsworth Formation‏‎ (1 revision)
  329. Montrose Chert Member‏‎ (1 revision)
  330. Metropolis Formation‏‎ (1 revision)
  331. Brainard Shale‏‎ (1 revision)
  332. Hegeler Till Member‏‎ (1 revision)
  333. Canadian Series‏‎ (1 revision)
  334. Litchfield Coal Member‏‎ (1 revision)
  335. Misenheimer Shale Member‏‎ (1 revision)
  336. Dix Limestone Member‏‎ (1 revision)
  337. Roby Silt Member‏‎ (1 revision)
  338. Mulberry Grove Silt Member‏‎ (1 revision)
  339. Plaines Member‏‎ (1 revision)
  340. Atokan Series‏‎ (1 revision)
  341. Palestine Sandstone‏‎ (1 revision)
  342. Drummond Member‏‎ (1 revision)
  343. Spechts Ferry Formation‏‎ (1 revision)
  344. Mattoon Formation‏‎ (1 revision)
  345. Burroughs Limestone Member‏‎ (1 revision)
  346. Cincinnatian Series‏‎ (1 revision)
  347. Chapin Soil‏‎ (1 revision)
  348. Paint Creek Group‏‎ (1 revision)
  349. Champlainian Series‏‎ (1 revision)
  350. Alto Formation‏‎ (1 revision)
  351. Tioga Bentonite Bed‏‎ (1 revision)
  352. McDonough Loess Member‏‎ (1 revision)
  353. Okaw Group‏‎ (1 revision)
  354. Hazelwood Member‏‎ (1 revision)
  355. Mason Group‏‎ (1 revision)
  356. Fairplay Member‏‎ (1 revision)
  357. Malden Till Member‏‎ (1 revision)
  358. Cramer Limestone Member‏‎ (1 revision)
  359. Wasco Member‏‎ (1 revision)
  360. Cambrian System‏‎ (1 revision)
  361. Davenport Member‏‎ (1 revision)
  362. Ottawa Limestone Megagroup‏‎ (1 revision)
  363. Mooseheart Member‏‎ (1 revision)
  364. Brickeys Member‏‎ (1 revision)
  365. Witt Coal Member‏‎ (1 revision)
  366. Rosiclare Sandstone Member‏‎ (1 revision)
  367. Bunje Limestone Member‏‎ (1 revision)
  368. Cape Limestone‏‎ (1 revision)
  369. Peyton Colluvium‏‎ (1 revision)
  370. Macoupin Limestone Member‏‎ (1 revision)
  371. Fort Payne Formation‏‎ (1 revision)
  372. Bogota Limestone Member‏‎ (1 revision)
  373. Hannibal Shale‏‎ (1 revision)
  374. Springville Shale‏‎ (1 revision)
  375. Ford Station Limestone Member‏‎ (1 revision)
  376. Salem Limestone‏‎ (1 revision)
  377. Marcus Formation‏‎ (1 revision)
  378. Tarter Coal Member‏‎ (1 revision)
  379. Kinderhookian Series‏‎ (1 revision)
  380. Berry Clay Member‏‎ (1 revision)
  381. Smithboro Till Member‏‎ (1 revision)
  382. Upper Devonian Series‏‎ (1 revision)
  383. Joliet Formation‏‎ (1 revision)
  384. Hadley Gravel Member‏‎ (1 revision)
  385. Nokomis Sandstone Member‏‎ (1 revision)
  386. Jamestown Coal Member‏‎ (1 revision)
  387. Shullsburg Member‏‎ (1 revision)
  388. Glenburn Till Member‏‎ (1 revision)
  389. Omega Limestone Member‏‎ (1 revision)
  390. Batavia Member‏‎ (1 revision)
  391. Matson Member‏‎ (1 revision)
  392. Levings Member‏‎ (1 revision)
  393. Elgin Shale Member‏‎ (1 revision)
  394. Tilton Till Member‏‎ (1 revision)
  395. Grayslake Peat‏‎ (1 revision)
  396. McWain Sandstone Member‏‎ (1 revision)
  397. Hoing Sandstone Member‏‎ (1 revision)
  398. New Burnside Coal Member‏‎ (1 revision)
  399. Scales Shale‏‎ (1 revision)
  400. Wise Ridge Coal Member‏‎ (1 revision)
  401. Harrodsburg Limestone Member‏‎ (1 revision)
  402. Dane Member‏‎ (1 revision)
  403. Missourian Series‏‎ (1 revision)
  404. Clayton Formation‏‎ (1 revision)
  405. Grassy Creek Shale‏‎ (1 revision)
  406. Fern Glen Formation‏‎ (1 revision)
  407. Kingdom Sandstone Member‏‎ (1 revision)
  408. Joachim Dolomite‏‎ (1 revision)
  409. Neda Formation‏‎ (1 revision)
  410. Romeo Member‏‎ (1 revision)
  411. Modesto Formation‏‎ (1 revision)
  412. Shumway Limestone Member‏‎ (1 revision)
  413. Valmeyeran Series‏‎ (1 revision)
  414. Grand Detour Formation‏‎ (1 revision)
  415. Goreville Limestone Member‏‎ (1 revision)
  416. Menard Limestone‏‎ (1 revision)
  417. Farmington Shale Member‏‎ (1 revision)
  418. Yarmouth Soil‏‎ (1 revision)
  419. Seahorne Limestone Member‏‎ (1 revision)
  420. Glossary‏‎ (1 revision)
  421. Grindstaff Sandstone Member‏‎ (1 revision)
  422. Oakland Till Member‏‎ (1 revision)
  423. Pokeberry Limestone Member‏‎ (1 revision)
  424. Wyota Member‏‎ (1 revision)
  425. Sylamore Sandstone‏‎ (1 revision)
  426. Bidwell Coal Member‏‎ (1 revision)
  427. Harmony Hill Shale Member‏‎ (1 revision)
  428. Opdyke Coal Member‏‎ (1 revision)
  429. Vandalia Till Member‏‎ (1 revision)
  430. Pliocene Series‏‎ (1 revision)
  431. Mammoth Cave Limestone Megagroup‏‎ (1 revision)
  432. Copperas Creek Sandstone Member‏‎ (1 revision)
  433. Bonpas Limestone Member‏‎ (1 revision)
  434. Wilhelmi Formation‏‎ (1 revision)
  435. Dresbachian Stage‏‎ (1 revision)
  436. Quimbys Mill Formation‏‎ (1 revision)
  437. Brereton Limestone Member‏‎ (1 revision)
  438. Hely Member‏‎ (1 revision)
  439. Hulick Till Member‏‎ (1 revision)
  440. Mahomet Sand Member‏‎ (1 revision)
  441. Merom Sandstone Member‏‎ (1 revision)
  442. Afton Soil‏‎ (1 revision)
  443. Meppen Limestone‏‎ (1 revision)
  444. Delwood Coal Member‏‎ (1 revision)
  445. Cahokia Alluvium‏‎ (1 revision)
  446. Elm Member‏‎ (1 revision)
  447. Wilcox Formation‏‎ (1 revision)
  448. Permian System‏‎ (1 revision)
  449. Cretaceous System‏‎ (1 revision)
  450. Rocher Member‏‎ (1 revision)
  451. Esmond Till Member‏‎ (1 revision)
  452. Genevievian Stage‏‎ (1 revision)
  453. Dolton Member‏‎ (1 revision)
  454. Roxana Silt‏‎ (1 revision)
  455. Derby-Doerun Member‏‎ (1 revision)
  456. De Graff Coal Member‏‎ (1 revision)
  457. Lemont Formation‏‎ (1 revision)
  458. Reisner Limestone Member‏‎ (1 revision)
  459. Hillery Till Member‏‎ (1 revision)
  460. La Salle Limestone Member‏‎ (1 revision)
  461. Otis Member‏‎ (1 revision)
  462. Degonia Sandstone‏‎ (1 revision)
  463. Sample Sandstone Member‏‎ (1 revision)
  464. Starved Rock Sandstone Member‏‎ (1 revision)
  465. Flannigan Coal Member‏‎ (1 revision)
  466. Geneva Dolomite Member‏‎ (1 revision)
  467. New Glarus Member‏‎ (1 revision)
  468. Sonora Formation‏‎ (1 revision)
  469. Blodgett Member‏‎ (1 revision)
  470. Lierle Clay Member‏‎ (1 revision)
  471. Tyson Member‏‎ (1 revision)
  472. Ironton Sandstone‏‎ (1 revision)
  473. Waltersburg Formation‏‎ (1 revision)
  474. Lonsdale Limestone Member‏‎ (1 revision)
  475. Chouteau Limestone‏‎ (1 revision)
  476. Oneota Dolomite‏‎ (1 revision)
  477. Hazel Green Member‏‎ (1 revision)
  478. Kellerville Till Member‏‎ (1 revision)
  479. Dutch Creek Sandstone Member‏‎ (1 revision)
  480. Farmdale Soil‏‎ (1 revision)
  481. Mincke Member‏‎ (1 revision)
  482. Tonti Sandstone Member‏‎ (1 revision)
  483. Miocene Series‏‎ (1 revision)
  484. Boles Member‏‎ (1 revision)
  485. Lee Center Till Member‏‎ (1 revision)
  486. Wall Member‏‎ (1 revision)
  487. Mascoutah facies‏‎ (1 revision)
  488. Augusta Member‏‎ (1 revision)
  489. Mt. Carmel Sandstone Member‏‎ (1 revision)
  490. Castlewood Member‏‎ (1 revision)
  491. Charter Member‏‎ (1 revision)
  492. Grassy Knob Chert‏‎ (1 revision)
  493. Kenyon Member‏‎ (1 revision)
  494. Glenhaven Member‏‎ (1 revision)
  495. Belgium Member‏‎ (1 revision)
  496. North Hill Group‏‎ (1 revision)
  497. Spring Grove Member‏‎ (1 revision)
  498. Sexton Creek Limestone‏‎ (1 revision)
  499. Blomeyer Member‏‎ (1 revision)
  500. New Richmond Sandstone‏‎ (1 revision)

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