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  1. Middle Devonian Series‏‎ (1 revision)
  2. Degonia Sandstone‏‎ (1 revision)
  3. Sample Sandstone Member‏‎ (1 revision)
  4. Starved Rock Sandstone Member‏‎ (1 revision)
  5. Flannigan Coal Member‏‎ (1 revision)
  6. Cedar Valley Limestone‏‎ (1 revision)
  7. Geneva Dolomite Member‏‎ (1 revision)
  8. New Glarus Member‏‎ (1 revision)
  9. Robein Member‏‎ (1 revision)
  10. Sonora Formation‏‎ (1 revision)
  11. Blodgett Member‏‎ (1 revision)
  12. Tyson Member‏‎ (1 revision)
  13. Mississippian Subsystem‏‎ (1 revision)
  14. Waltersburg Formation‏‎ (1 revision)
  15. Lonsdale Limestone Member‏‎ (1 revision)
  16. Oneota Dolomite‏‎ (1 revision)
  17. Hazel Green Member‏‎ (1 revision)
  18. Dutch Creek Sandstone Member‏‎ (1 revision)
  19. Mincke Member‏‎ (1 revision)
  20. Tonti Sandstone Member‏‎ (1 revision)
  21. Miocene Series‏‎ (1 revision)
  22. Boles Member‏‎ (1 revision)
  23. Lee Center Till Member‏‎ (1 revision)
  24. Wall Member‏‎ (1 revision)
  25. Mascoutah facies‏‎ (1 revision)
  26. Augusta Member‏‎ (1 revision)
  27. Mt. Carmel Sandstone Member‏‎ (1 revision)
  28. Castlewood Member‏‎ (1 revision)
  29. Charter Member‏‎ (1 revision)
  30. Toulon Member‏‎ (1 revision)
  31. La Salle Limestone Member‏‎ (1 revision)
  32. Otis Member‏‎ (1 revision)
  33. Kenyon Member‏‎ (1 revision)
  34. Glenhaven Member‏‎ (1 revision)
  35. Belgium Member‏‎ (1 revision)
  36. St. Peter Sandstone‏‎ (1 revision)
  37. North Hill Group‏‎ (1 revision)
  38. Spring Grove Member‏‎ (1 revision)
  39. Maquoketa Shale Group‏‎ (1 revision)
  40. Sexton Creek Limestone‏‎ (1 revision)
  41. Blomeyer Member‏‎ (1 revision)
  42. New Richmond Sandstone‏‎ (1 revision)
  43. Mt. Rorah Coal Member‏‎ (1 revision)
  44. Piatt Member‏‎ (1 revision)
  45. Dubuque Formation‏‎ (1 revision)
  46. Maysvillian Stage‏‎ (1 revision)
  47. McCraney Limestone‏‎ (1 revision)
  48. Defiance Member‏‎ (1 revision)
  49. Franconian Stage‏‎ (1 revision)
  50. Silurian System‏‎ (1 revision)
  51. Mifflin Formation‏‎ (1 revision)
  52. Kidd Member‏‎ (1 revision)
  53. Gordonville Member‏‎ (1 revision)
  54. Joppa Member‏‎ (1 revision)
  55. Triassic System‏‎ (1 revision)
  56. Kaskaskia Sequence‏‎ (1 revision)
  57. Tripp Limestone Member‏‎ (1 revision)
  58. Canteen member‏‎ (1 revision)
  59. Seville Limestone Member‏‎ (1 revision)
  60. Carlinville Limestone Member‏‎ (1 revision)
  61. De Long Coal Member‏‎ (1 revision)
  62. Tygett Sandstone Member‏‎ (1 revision)
  63. Guttenberg Formation‏‎ (1 revision)
  64. Grassy Knob Chert‏‎ (1 revision)
  65. Backbone Limestone‏‎ (1 revision)
  66. Athensville Coal Member‏‎ (1 revision)
  67. Shakopee Dolomite‏‎ (1 revision)
  68. Chapel Coal Member‏‎ (1 revision)
  69. Momence Sandstone Member‏‎ (1 revision)
  70. Pope Megagroup‏‎ (1 revision)
  71. Birds Member‏‎ (1 revision)
  72. Kankakee Formation‏‎ (1 revision)
  73. Medusa Member‏‎ (1 revision)
  74. Racine Formation‏‎ (1 revision)
  75. Ogle Till Member‏‎ (1 revision)
  76. Oglesby Member‏‎ (1 revision)
  77. Grigg tongue‏‎ (1 revision)
  78. Alexandrian Series‏‎ (1 revision)
  79. Exline Limestone Member‏‎ (1 revision)
  80. Devonian System‏‎ (1 revision)
  81. Warsaw Shale‏‎ (1 revision)
  82. Cedar Bluff Limestone Group‏‎ (1 revision)
  83. Galesville Sandstone‏‎ (1 revision)
  84. Granger Sandstone Member‏‎ (1 revision)
  85. Pleistocene Series‏‎ (1 revision)
  86. Virgilian Series‏‎ (1 revision)
  87. Pennsylvanian Subsystem‏‎ (1 revision)
  88. Everett Member‏‎ (1 revision)
  89. Howardton Limestone Member‏‎ (1 revision)
  90. Jurassic System‏‎ (1 revision)
  91. Buckhorn Member‏‎ (1 revision)
  92. Thebes Sandstone Member‏‎ (1 revision)
  93. County Line (Alburnett) silt‏‎ (1 revision)
  94. Knobs Megagroup‏‎ (1 revision)
  95. Reel Limestone Member‏‎ (1 revision)
  96. Danville Coal Member‏‎ (1 revision)
  97. Popcorn Sandstone Member‏‎ (1 revision)
  98. Lower Devonian Series‏‎ (1 revision)
  99. Gasperian Stage‏‎ (1 revision)
  100. Fox Valley Member‏‎ (1 revision)
  101. Starrs Cave Limestone‏‎ (1 revision)
  102. Elmhurst Sandstone Member‏‎ (1 revision)
  103. Grove Church Shale‏‎ (1 revision)
  104. Lombard Dolomite Member‏‎ (1 revision)
  105. Pleasant Grove Soil‏‎ (1 revision)
  106. Hall Limestone Member‏‎ (1 revision)
  107. Anvil Rock Sandstone Member‏‎ (1 revision)
  108. Bilyeu Member‏‎ (1 revision)
  109. Rock Island Coal Member‏‎ (1 revision)
  110. Lacey Member‏‎ (1 revision)
  111. McLeansboro Group‏‎ (1 revision)
  112. Davis Member‏‎ (1 revision)
  113. Yorkville Member‏‎ (1 revision)
  114. Decorah Subgroup‏‎ (1 revision)
  115. Friendsville Coal Member‏‎ (1 revision)
  116. Delavan Member‏‎ (1 revision)
  117. Mosalem Formation‏‎ (1 revision)
  118. Creal Springs Limestone Member‏‎ (1 revision)
  119. Gunter Sandstone‏‎ (1 revision)
  120. Eagle Point Member‏‎ (1 revision)
  121. Hombergian Stage‏‎ (1 revision)
  122. Forreston Member‏‎ (1 revision)
  123. Crowleys Ridge Silt‏‎ (1 revision)
  124. Vergennes Sandstone Member‏‎ (1 revision)
  125. Vienna Limestone‏‎ (1 revision)
  126. Mayfield Member‏‎ (1 revision)
  127. Wapsipinicon Limestone‏‎ (1 revision)
  128. Orchard Creek Shale Member‏‎ (1 revision)
  129. Kiser Creek Member‏‎ (1 revision)
  130. Elwood Formation‏‎ (1 revision)
  131. Flat Creek Coal Member‏‎ (1 revision)
  132. Schweizer Member‏‎ (1 revision)
  133. Girardeau Limestone‏‎ (1 revision)
  134. Offerman Member‏‎ (1 revision)
  135. Two Rivers Member‏‎ (1 revision)
  136. Nutwood Shale Member‏‎ (1 revision)
  137. Elviran Stage‏‎ (1 revision)
  138. Tar Springs Sandstone‏‎ (1 revision)
  139. Hennepin Member‏‎ (1 revision)
  140. Kewaunee Formation‏‎ (1 revision)
  141. Sugar Run Formation‏‎ (1 revision)
  142. Pope Creek Coal Member‏‎ (1 revision)
  143. Dement Member‏‎ (1 revision)
  144. Beecher Member‏‎ (1 revision)
  145. Jordan Sandstone‏‎ (1 revision)
  146. Piasa Limestone‏‎ (1 revision)
  147. Wolf Creek Formation‏‎ (1 revision)
  148. Millersville Limestone Member‏‎ (1 revision)
  149. Rivoli Member‏‎ (1 revision)
  150. Allard Limestone Member‏‎ (1 revision)
  151. Franconia Formation‏‎ (1 revision)
  152. West Franklin Limestone Member‏‎ (1 revision)
  153. Chazyan Stage‏‎ (1 revision)
  154. Potsdam Sandstone Megagroup‏‎ (1 revision)
  155. New Haven Coal Member‏‎ (1 revision)
  156. Markham Silt Member‏‎ (1 revision)
  157. Fort Atkinson Limstone‏‎ (1 revision)
  158. Edenian Stage‏‎ (1 revision)
  159. Embayment Megagroup‏‎ (1 revision)
  160. Shorewood Member‏‎ (1 revision)
  161. Sweeney Formation‏‎ (1 revision)
  162. Cohn Coal Member‏‎ (1 revision)
  163. Clore Formation‏‎ (1 revision)
  164. Livingston Limestone Member‏‎ (1 revision)
  165. Sangamon Soil‏‎ (1 revision)
  166. Morrowan Series‏‎ (1 revision)
  167. Loughridge Sandstone Member‏‎ (1 revision)
  168. Ordovician System‏‎ (1 revision)
  169. Clear Creek Chert‏‎ (1 revision)
  170. Garnavillo Member‏‎ (1 revision)
  171. Saverton Shale‏‎ (1 revision)
  172. Little Bear Soil‏‎ (1 revision)
  173. Cheltenham Clay Member‏‎ (1 revision)
  174. Golconda Group‏‎ (1 revision)
  175. Carboniferous System‏‎ (1 revision)
  176. Moredock Member‏‎ (1 revision)
  177. Sinsinawa Member‏‎ (1 revision)
  178. Alburnett Formation‏‎ (1 revision)
  179. Victory Member‏‎ (1 revision)
  180. Clermont Shale Member‏‎ (1 revision)
  181. Sweetland Creek Shale‏‎ (1 revision)
  182. Lovell Member‏‎ (1 revision)
  183. Pearl Formation‏‎ (1 revision)
  184. Murphysboro Coal Member‏‎ (1 revision)
  185. Richmondian Stage‏‎ (1 revision)
  186. Enion Formation‏‎ (1 revision)
  187. Jules Soil‏‎ (1 revision)
  188. Shelbyville Coal Member‏‎ (1 revision)
  189. Burlington Limestone‏‎ (1 revision)
  190. Sterling Till Member‏‎ (1 revision)
  191. Scottville Limestone Member‏‎ (1 revision)
  192. Baylis Formation‏‎ (1 revision)
  193. Chana Member‏‎ (1 revision)
  194. Grover Gravel‏‎ (1 revision)
  195. Duncan Mills Member‏‎ (1 revision)
  196. Owl Creek Formation‏‎ (1 revision)
  197. Blanding Formation‏‎ (1 revision)
  198. Lacon Formation‏‎ (1 revision)
  199. Wadsworth Formation‏‎ (1 revision)
  200. Hunton Limestone Megagroup‏‎ (1 revision)
  201. Stillman Member‏‎ (1 revision)
  202. Nachusa Formation‏‎ (1 revision)
  203. Establishment Member‏‎ (1 revision)
  204. Edgewood Formation‏‎ (1 revision)
  205. Sorento Limestone Member‏‎ (1 revision)
  206. Assumption Coal Member‏‎ (1 revision)
  207. Trempealeauan Stage‏‎ (1 revision)
  208. Paleocene Series‏‎ (1 revision)
  209. Sherwood Member‏‎ (1 revision)
  210. Plano Silt Member‏‎ (1 revision)
  211. Effingham Limestone Member‏‎ (1 revision)
  212. Keokuk Limestone‏‎ (1 revision)
  213. Cooper Limestone Member‏‎ (1 revision)
  214. Woodbury Limestone Member‏‎ (1 revision)
  215. Mt. Simon Sandstone‏‎ (1 revision)
  216. St. James Member‏‎ (1 revision)
  217. Scottsburg Limestone Member‏‎ (1 revision)
  218. Cincinnatian Series‏‎ (1 revision)
  219. Conant Limestone Member‏‎ (1 revision)
  220. Galum Limestone Member‏‎ (1 revision)
  221. Champlainian Series‏‎ (1 revision)
  222. Beaver Bend Limestone Member‏‎ (1 revision)
  223. Prairie du Chien Group‏‎ (1 revision)
  224. Cora Limestone Member‏‎ (1 revision)
  225. Dutchtown Limestone‏‎ (1 revision)
  226. Arsenal Member‏‎ (1 revision)
  227. Mason Group‏‎ (1 revision)
  228. Desmoinesian Series‏‎ (1 revision)
  229. Reynoldsburg Coal Member‏‎ (1 revision)
  230. Radnor Till Member‏‎ (1 revision)
  231. Allenby Coal Member‏‎ (1 revision)
  232. Cambrian System‏‎ (1 revision)
  233. Teneriffe Silt‏‎ (1 revision)
  234. Walnut Grove Limestone Member‏‎ (1 revision)
  235. Absaroka Sequence‏‎ (1 revision)
  236. Ramp Creek Limestone Member‏‎ (1 revision)
  237. Eldena Member‏‎ (1 revision)
  238. Levias Limestone Member‏‎ (1 revision)
  239. Kress Member‏‎ (1 revision)
  240. Oak formation‏‎ (1 revision)
  241. Brandon Bridge Member‏‎ (1 revision)
  242. Lake Creek Coal Member‏‎ (1 revision)
  243. Lawson Shale Member‏‎ (1 revision)
  244. Gunn Member‏‎ (1 revision)
  245. Spechts Ferry Formation‏‎ (1 revision)
  246. Glencoe Member‏‎ (1 revision)
  247. Crane Member‏‎ (1 revision)
  248. Kinderhookian Series‏‎ (1 revision)
  249. State Pond Member‏‎ (1 revision)
  250. Upper Devonian Series‏‎ (1 revision)
  251. Blocher Shale‏‎ (1 revision)
  252. Glen Dean Limestone‏‎ (1 revision)
  253. Chalfin Member‏‎ (1 revision)
  254. Bond Formation‏‎ (1 revision)
  255. Troutman Member‏‎ (1 revision)
  256. Eminence Formation‏‎ (1 revision)
  257. Markgraf Member‏‎ (1 revision)
  258. McNairy Formation‏‎ (1 revision)
  259. Manley Coal Member‏‎ (1 revision)
  260. Proviso Siltstone Member‏‎ (1 revision)
  261. Greenup Limestone Member‏‎ (1 revision)
  262. Argyle Till Member‏‎ (1 revision)
  263. Kenwood Member‏‎ (1 revision)
  264. Snider Till Member‏‎ (1 revision)
  265. Sharpsboro Member‏‎ (1 revision)
  266. Mortimer Member‏‎ (1 revision)
  267. West Lebanon Formation‏‎ (1 revision)
  268. Capron Till Member‏‎ (1 revision)
  269. Harmattan Till Member‏‎ (1 revision)
  270. Hannibal Shale‏‎ (1 revision)
  271. Marywood Member‏‎ (1 revision)
  272. Salem Limestone‏‎ (1 revision)
  273. Curlew Limestone Member‏‎ (1 revision)
  274. New London Member‏‎ (1 revision)
  275. Coggan Member‏‎ (1 revision)
  276. Valmeyeran Series‏‎ (1 revision)
  277. West Baden Group‏‎ (1 revision)
  278. Plattin Subgroup‏‎ (1 revision)
  279. Clement Member‏‎ (1 revision)
  280. Yarmouth Soil‏‎ (1 revision)
  281. Gimlet Sandstone Member‏‎ (1 revision)
  282. Sankoty Sand Member‏‎ (1 revision)
  283. Trentonian Stage‏‎ (1 revision)
  284. Harkness Silt Member‏‎ (1 revision)
  285. Abernathy Member‏‎ (1 revision)
  286. Pecatonica Formation‏‎ (1 revision)
  287. Sauk Sequence‏‎ (1 revision)
  288. Petersburg Silt‏‎ (1 revision)
  289. Finnie Sandstone Member‏‎ (1 revision)
  290. Strawbridge Member‏‎ (1 revision)
  291. Coralville Member‏‎ (1 revision)
  292. Everton Dolomite‏‎ (1 revision)
  293. Eocene Series‏‎ (1 revision)
  294. Solon Member‏‎ (1 revision)
  295. Rendleman Oolite Bed‏‎ (1 revision)
  296. Grassy Creek Shale‏‎ (1 revision)
  297. Winslow Till Member‏‎ (1 revision)
  298. Fults Member‏‎ (1 revision)
  299. Joachim Dolomite‏‎ (1 revision)
  300. Porters Creek Formation‏‎ (1 revision)
  301. Gila Limestone Member‏‎ (1 revision)
  302. Tertiary System‏‎ (1 revision)
  303. Noix Oolite Member‏‎ (1 revision)
  304. Afton Soil‏‎ (1 revision)
  305. Cenozoic Erathem‏‎ (1 revision)
  306. Inglefield Sandstone Member‏‎ (1 revision)
  307. Cahokia Alluvium‏‎ (1 revision)
  308. Prospect Hill Siltstone‏‎ (1 revision)
  309. Coffeen Limestone Member‏‎ (1 revision)
  310. Cayugan Series‏‎ (1 revision)
  311. Stonefort Limestone Member‏‎ (1 revision)
  312. Cretaceous System‏‎ (1 revision)
  313. Kinkaid Limestone‏‎ (1 revision)
  314. Murray Bluff Sandstone Member‏‎ (1 revision)
  315. Walgreen Member‏‎ (1 revision)
  316. Roxana Silt‏‎ (1 revision)
  317. St. Clair Limestone‏‎ (1 revision)
  318. Blackriveran Stage‏‎ (1 revision)
  319. Lemont Formation‏‎ (1 revision)
  320. Louisiana Limestone‏‎ (1 revision)
  321. Metz Member‏‎ (1 revision)
  322. Bernadotte Sandstone Member‏‎ (1 revision)
  323. Bankston Fork Limestone Member‏‎ (1 revision)
  324. Hermon Coal Member‏‎ (1 revision)
  325. Daysville Dolomite Member‏‎ (1 revision)
  326. Gulfian Series‏‎ (1 revision)
  327. Ancell Group‏‎ (1 revision)
  328. Willis Coal Member‏‎ (1 revision)
  329. Quimbys Mill Formation‏‎ (1 revision)
  330. Pond Creek Coal Member‏‎ (1 revision)
  331. Hulick Till Member‏‎ (1 revision)
  332. Croixan Series‏‎ (1 revision)
  333. Rock Branch Coal Member‏‎ (1 revision)
  334. Chouteau Limestone‏‎ (1 revision)
  335. Rapid Member‏‎ (1 revision)
  336. Calhoun Coal Member‏‎ (1 revision)
  337. Kellerville Till Member‏‎ (1 revision)
  338. Walche Limestone Member‏‎ (1 revision)
  339. Farmdale Soil‏‎ (1 revision)
  340. Womac Coal Member‏‎ (1 revision)
  341. Mesozoic Erathem‏‎ (1 revision)
  342. Reelsville Limestone Member‏‎ (1 revision)
  343. Kings Lake Formation‏‎ (1 revision)
  344. Shoal Creek Limestone Member‏‎ (1 revision)
  345. Hardinsburg Sandstone‏‎ (1 revision)
  346. Tippecanoe Sequence‏‎ (1 revision)
  347. Tete de Morts Formation‏‎ (1 revision)
  348. Babylon Sandstone Member‏‎ (1 revision)
  349. Wise Lake Formation‏‎ (1 revision)
  350. McClearys Bluff Coal Member‏‎ (1 revision)
  351. Brush Coal Member‏‎ (1 revision)
  352. Briton Member‏‎ (1 revision)
  353. Montrose Chert Member‏‎ (1 revision)
  354. Metropolis Formation‏‎ (1 revision)
  355. Brainard Shale‏‎ (1 revision)
  356. Hegeler Till Member‏‎ (1 revision)
  357. Lierle Clay Member‏‎ (1 revision)
  358. Negli Creek Limestone Member‏‎ (1 revision)
  359. Buelter Member‏‎ (1 revision)
  360. Ironton Sandstone‏‎ (1 revision)
  361. Misenheimer Shale Member‏‎ (1 revision)
  362. Dix Limestone Member‏‎ (1 revision)
  363. Platteville Group‏‎ (1 revision)
  364. Roby Silt Member‏‎ (1 revision)
  365. Mulberry Grove Silt Member‏‎ (1 revision)
  366. Plaines Member‏‎ (1 revision)
  367. Manitowoc Member‏‎ (1 revision)
  368. Atokan Series‏‎ (1 revision)
  369. Palestine Sandstone‏‎ (1 revision)
  370. Drummond Member‏‎ (1 revision)
  371. Mounds Gravel‏‎ (1 revision)
  372. Mattoon Formation‏‎ (1 revision)
  373. Burroughs Limestone Member‏‎ (1 revision)
  374. Banner Formation‏‎ (1 revision)
  375. Chapin Soil‏‎ (1 revision)
  376. Paint Creek Group‏‎ (1 revision)
  377. Batestown Member‏‎ (1 revision)
  378. Alto Formation‏‎ (1 revision)
  379. Tioga Bentonite Bed‏‎ (1 revision)
  380. Tiskilwa Formation‏‎ (1 revision)
  381. McDonough Loess Member‏‎ (1 revision)
  382. Okaw Group‏‎ (1 revision)
  383. Hazelwood Member‏‎ (1 revision)
  384. Fairplay Member‏‎ (1 revision)
  385. Malden Till Member‏‎ (1 revision)
  386. Cramer Limestone Member‏‎ (1 revision)
  387. Wasco Member‏‎ (1 revision)
  388. Davenport Member‏‎ (1 revision)
  389. Ottawa Limestone Megagroup‏‎ (1 revision)
  390. Mooseheart Member‏‎ (1 revision)
  391. Knox Dolomite Megagroup‏‎ (1 revision)
  392. Canadian Series‏‎ (1 revision)
  393. Litchfield Coal Member‏‎ (1 revision)
  394. Glenwood Formation‏‎ (1 revision)
  395. Rosiclare Sandstone Member‏‎ (1 revision)
  396. Bunje Limestone Member‏‎ (1 revision)
  397. Niagaran Series‏‎ (1 revision)
  398. Cape Limestone‏‎ (1 revision)
  399. Peyton Colluvium‏‎ (1 revision)
  400. Morton Tongue‏‎ (1 revision)
  401. Macoupin Limestone Member‏‎ (1 revision)
  402. Chesterian Series‏‎ (1 revision)
  403. Fort Payne Formation‏‎ (1 revision)
  404. Bogota Limestone Member‏‎ (1 revision)
  405. Springville Shale‏‎ (1 revision)
  406. Ford Station Limestone Member‏‎ (1 revision)
  407. Marcus Formation‏‎ (1 revision)
  408. Tarter Coal Member‏‎ (1 revision)
  409. Berry Clay Member‏‎ (1 revision)
  410. Smithboro Till Member‏‎ (1 revision)
  411. Henry Formation‏‎ (1 revision)
  412. Joliet Formation‏‎ (1 revision)
  413. Hadley Gravel Member‏‎ (1 revision)
  414. Nokomis Sandstone Member‏‎ (1 revision)
  415. Jamestown Coal Member‏‎ (1 revision)
  416. Shullsburg Member‏‎ (1 revision)
  417. Glenburn Till Member‏‎ (1 revision)
  418. Omega Limestone Member‏‎ (1 revision)
  419. Batavia Member‏‎ (1 revision)
  420. Matson Member‏‎ (1 revision)
  421. Levings Member‏‎ (1 revision)
  422. Elgin Shale Member‏‎ (1 revision)
  423. Tilton Till Member‏‎ (1 revision)
  424. Pike Soil‏‎ (1 revision)
  425. Brickeys Member‏‎ (1 revision)
  426. Witt Coal Member‏‎ (1 revision)
  427. Potosi Dolomite‏‎ (1 revision)
  428. Hoing Sandstone Member‏‎ (1 revision)
  429. New Burnside Coal Member‏‎ (1 revision)
  430. Scales Shale‏‎ (1 revision)
  431. Wise Ridge Coal Member‏‎ (1 revision)
  432. Dunleith Formation‏‎ (1 revision)
  433. Harrodsburg Limestone Member‏‎ (1 revision)
  434. Dane Member‏‎ (1 revision)
  435. Beverly Tongue‏‎ (1 revision)
  436. Missourian Series‏‎ (1 revision)
  437. Clayton Formation‏‎ (1 revision)
  438. Fern Glen Formation‏‎ (1 revision)
  439. Kingdom Sandstone Member‏‎ (1 revision)
  440. Neda Formation‏‎ (1 revision)
  441. Romeo Member‏‎ (1 revision)
  442. Glasford Formation‏‎ (1 revision)
  443. Modesto Formation‏‎ (1 revision)
  444. Shumway Limestone Member‏‎ (1 revision)
  445. Grand Detour Formation‏‎ (1 revision)
  446. Goreville Limestone Member‏‎ (1 revision)
  447. Menard Limestone‏‎ (1 revision)
  448. Farmington Shale Member‏‎ (1 revision)
  449. Seahorne Limestone Member‏‎ (1 revision)
  450. Glossary‏‎ (1 revision)
  451. Grindstaff Sandstone Member‏‎ (1 revision)
  452. Oakland Till Member‏‎ (1 revision)
  453. Pokeberry Limestone Member‏‎ (1 revision)
  454. Wyota Member‏‎ (1 revision)
  455. Sylamore Sandstone‏‎ (1 revision)
  456. Bidwell Coal Member‏‎ (1 revision)
  457. Eau Claire Formation‏‎ (1 revision)
  458. Grayslake Peat‏‎ (1 revision)
  459. McWain Sandstone Member‏‎ (1 revision)
  460. Paleozoic Erathem‏‎ (1 revision)
  461. Vandalia Till Member‏‎ (1 revision)
  462. Pliocene Series‏‎ (1 revision)
  463. Mammoth Cave Limestone Megagroup‏‎ (1 revision)
  464. Copperas Creek Sandstone Member‏‎ (1 revision)
  465. Loveland Silt‏‎ (1 revision)
  466. Bonpas Limestone Member‏‎ (1 revision)
  467. Wilhelmi Formation‏‎ (1 revision)
  468. Dresbachian Stage‏‎ (1 revision)
  469. Brereton Limestone Member‏‎ (1 revision)
  470. Hely Member‏‎ (1 revision)
  471. Wedron Group‏‎ (1 revision)
  472. Mahomet Sand Member‏‎ (1 revision)
  473. Merom Sandstone Member‏‎ (1 revision)
  474. Haeger Member‏‎ (1 revision)
  475. Meppen Limestone‏‎ (1 revision)
  476. Delwood Coal Member‏‎ (1 revision)
  477. Elm Member‏‎ (1 revision)
  478. Wilcox Formation‏‎ (1 revision)
  479. Permian System‏‎ (1 revision)
  480. Rocher Member‏‎ (1 revision)
  481. Esmond Till Member‏‎ (1 revision)
  482. Genevievian Stage‏‎ (1 revision)
  483. Dolton Member‏‎ (1 revision)
  484. Derby-Doerun Member‏‎ (1 revision)
  485. De Graff Coal Member‏‎ (1 revision)
  486. Reisner Limestone Member‏‎ (1 revision)
  487. Hillery Till Member‏‎ (1 revision)
  488. Meadow Loess Member‏‎ (1 revision)
  489. Harmony Hill Shale Member‏‎ (1 revision)
  490. Opdyke Coal Member‏‎ (1 revision)
  491. Bailey Limestone‏‎ (2 revisions)
  492. Downeys Bluff Limestone‏‎ (2 revisions)
  493. Ashmore Tongue‏‎ (2 revisions)
  494. Lake Michigan Formation‏‎ (2 revisions)
  495. Grand Tower Limestone‏‎ (2 revisions)
  496. Peddicord Tongue‏‎ (2 revisions)
  497. Glen Park Formation‏‎ (2 revisions)
  498. Winnetka Member‏‎ (2 revisions)
  499. Borden Siltstone‏‎ (2 revisions)
  500. Waukegan Member‏‎ (2 revisions)

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