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  1. Paleozoic Erathem‏‎ (926 links)
  2. Pennsylvanian Subsystem‏‎ (322 links)
  3. Absaroka Sequence‏‎ (318 links)
  4. Tippecanoe Sequence‏‎ (283 links)
  5. Kaskaskia Sequence‏‎ (251 links)
  6. Ordovician System‏‎ (232 links)
  7. Cenozoic Erathem‏‎ (230 links)
  8. Quaternary System‏‎ (214 links)
  9. Pleistocene Series‏‎ (189 links)
  10. Mississippian Subsystem‏‎ (182 links)
  11. Champlainian Series‏‎ (182 links)
  12. Desmoinesian Series‏‎ (180 links)
  13. Ottawa Limestone Megagroup‏‎ (174 links)
  14. Kewanee Group‏‎ (150 links)
  15. McLeansboro Group‏‎ (129 links)
  16. Hunton Limestone Megagroup‏‎ (124 links)
  17. Blackriveran Stage‏‎ (117 links)
  18. Pope Megagroup‏‎ (105 links)
  19. Carbondale Formation‏‎ (91 links)
  20. Chesterian Series‏‎ (89 links)
  21. Sauk Sequence‏‎ (89 links)
  22. Devonian System‏‎ (84 links)
  23. Missourian Series‏‎ (83 links)
  24. Valmeyeran Series‏‎ (80 links)
  25. Mammoth Cave Limestone Megagroup‏‎ (77 links)
  26. Platteville Group‏‎ (73 links)
  27. Cambrian System‏‎ (73 links)
  28. Spoon Formation‏‎ (73 links)
  29. Galena Group‏‎ (71 links)
  30. Knox Dolomite Megagroup‏‎ (71 links)
  31. Croixan Series‏‎ (69 links)
  32. Trentonian Stage‏‎ (69 links)
  33. Silurian System‏‎ (68 links)
  34. Plattin Subgroup‏‎ (58 links)
  35. Modesto Formation‏‎ (57 links)
  36. Middle Devonian Series‏‎ (57 links)
  37. Ancell Group‏‎ (53 links)
  38. Elviran Stage‏‎ (48 links)
  39. Kimmswick Subgroup‏‎ (48 links)
  40. Mattoon Formation‏‎ (48 links)
  41. Galatia Channel:Channels and Cyclothems: A Summary Model‏‎ (46 links)
  42. Galatia Channel:Evolution of a Peat - Contemporaneous Channel - The Galatia Channel, Middle Pennsylvanian, of the Illinois Basin‏‎ (46 links)
  43. Galatia Channel:Introduction‏‎ (46 links)
  44. Galatia Channel:Tables‏‎ (45 links)
  45. Galatia Channel:Excello Shale Member‏‎ (45 links)
  46. Galatia Channel:Turner Mine Shale Member‏‎ (45 links)
  47. Galatia Channel:Conclusions‏‎ (45 links)
  48. Galatia Channel:Figures‏‎ (45 links)
  49. Galatia Channel:Similar Channels Affecting Other Coal Seams‏‎ (45 links)
  50. Galatia Channel:Underclay of Springfield Coal‏‎ (45 links)
  51. Galatia Channel:Galatia Member‏‎ (45 links)
  52. Galatia Channel:Springfield Coal‏‎ (45 links)
  53. Galatia Channel:References‏‎ (45 links)
  54. Galatia Channel:Delafield Member‏‎ (45 links)
  55. Galatia Channel:Hanover Limestone Member‏‎ (45 links)
  56. Galatia Channel:St. David Limestone Member‏‎ (45 links)
  57. Galatia Channel:Acknowledgments‏‎ (45 links)
  58. Galatia Channel:Discussion‏‎ (45 links)
  59. Galatia Channel:Other Channels Related to the Galatia Channel‏‎ (45 links)
  60. Galatia Channel:Stratigraphy‏‎ (45 links)
  61. Galatia Channel:Appendix‏‎ (45 links)
  62. Galatia Channel:Dykersburg (Shale) Member‏‎ (45 links)
  63. Galatia Channel:Houchin Creek Coal‏‎ (45 links)
  64. Galatia Channel:Plates‏‎ (45 links)
  65. Galatia Channel:Summary‏‎ (45 links)
  66. McCormick Group‏‎ (44 links)
  67. Alexandrian Series‏‎ (43 links)
  68. Abbott Formation‏‎ (41 links)
  69. Embayment Megagroup‏‎ (41 links)
  70. Dresbachian Stage‏‎ (40 links)
  71. Bond Formation‏‎ (39 links)
  72. Glasford Formation‏‎ (39 links)
  73. Dunleith Formation‏‎ (39 links)
  74. Gasperian Stage‏‎ (38 links)
  75. Cincinnatian Series‏‎ (38 links)
  76. Wedron Group‏‎ (37 links)
  77. Holocene Series‏‎ (37 links)
  78. Atokan Series‏‎ (35 links)
  79. Knobs Megagroup‏‎ (35 links)
  80. New Albany Shale Group‏‎ (34 links)
  81. Trempealeauan Stage‏‎ (34 links)
  82. Decorah Subgroup‏‎ (32 links)
  83. Galatia Channel:Leslie Cemetery Channel‏‎ (32 links)
  84. Galatia Channel:Rapid Transgression, Gradual Regression‏‎ (32 links)
  85. Galatia Channel:Colchester Coal and Francis Creek Shale‏‎ (32 links)
  86. Galatia Channel:Linkage of Climate and Eustasy‏‎ (32 links)
  87. Galatia Channel:Relationship of Effingham and Galatia Channels‏‎ (32 links)
  88. Galatia Channel:Model of Channel Development‏‎ (32 links)
  89. Galatia Channel:Danville Coal‏‎ (32 links)
  90. Galatia Channel:Murphysboro Coal and Oraville Channel‏‎ (32 links)
  91. Galatia Channel:Other Channels‏‎ (32 links)
  92. Galatia Channel:Herrin Coal, Energy Shale, and Walshville Channel‏‎ (32 links)
  93. Galatia Channel:Peat Developed at Lowstand‏‎ (32 links)
  94. Galatia Channel:Sullivan Channel‏‎ (32 links)
  95. Galatia Channel:Baker Coal and Winslow-Henderson Channel‏‎ (32 links)
  96. Galatia Channel:Effingham Channel‏‎ (32 links)
  97. Mason Group‏‎ (31 links)
  98. Banner Formation‏‎ (31 links)
  99. Maquoketa Shale Group‏‎ (30 links)
  100. Caseyville Formation‏‎ (30 links)
  101. Grand Detour Formation‏‎ (29 links)
  102. Niagaran Series‏‎ (29 links)
  103. Morrowan Series‏‎ (29 links)
  104. Franconian Stage‏‎ (28 links)
  105. Potsdam Sandstone Megagroup‏‎ (28 links)
  106. Mesozoic Erathem‏‎ (27 links)
  107. Cedar Bluff Limestone Group‏‎ (27 links)
  108. Mt. Simon Sandstone‏‎ (27 links)
  109. Virgilian Series‏‎ (27 links)
  110. Cretaceous System‏‎ (26 links)
  111. Pecatonica Formation‏‎ (26 links)
  112. Kinderhookian Series‏‎ (26 links)
  113. Joachim Dolomite‏‎ (26 links)
  114. Genevievian Stage‏‎ (26 links)
  115. Paint Creek Group‏‎ (25 links)
  116. Prairie du Chien Group‏‎ (25 links)
  117. Mifflin Formation‏‎ (25 links)
  118. Lingle Formation‏‎ (25 links)
  119. Okaw Group‏‎ (25 links)
  120. West Baden Group‏‎ (24 links)
  121. Gulfian Series‏‎ (24 links)
  122. Glenwood Formation‏‎ (24 links)
  123. Upper Devonian Series‏‎ (23 links)
  124. Canadian Series‏‎ (23 links)
  125. Ste. Genevieve Limestone‏‎ (23 links)
  126. Lake Michigan Formation‏‎ (23 links)
  127. Wapsipinicon Limestone‏‎ (23 links)
  128. Renault Limestone‏‎ (23 links)
  129. Tertiary System‏‎ (23 links)
  130. Ridenhower Formation‏‎ (22 links)
  131. Hombergian Stage‏‎ (22 links)
  132. Grand Tower Limestone‏‎ (22 links)
  133. Henry Formation‏‎ (22 links)
  134. Golconda Group‏‎ (21 links)
  135. Salem Limestone‏‎ (21 links)
  136. Ironton Sandstone‏‎ (21 links)
  137. Cedar Valley Limestone‏‎ (21 links)
  138. Maysvillian Stage‏‎ (21 links)
  139. Nachusa Formation‏‎ (21 links)
  140. Scales Shale‏‎ (21 links)
  141. Equality Formation‏‎ (21 links)
  142. Quimbys Mill Formation‏‎ (21 links)
  143. St. Peter Sandstone‏‎ (20 links)
  144. Roxana Silt‏‎ (20 links)
  145. Kankakee Formation‏‎ (20 links)
  146. Ullin Limestone‏‎ (19 links)
  147. Guttenberg Formation‏‎ (19 links)
  148. Kings Lake Formation‏‎ (19 links)
  149. Aux Vases Sandstone‏‎ (19 links)
  150. Richmondian Stage‏‎ (19 links)
  151. Spechts Ferry Formation‏‎ (19 links)
  152. Clore Formation‏‎ (19 links)
  153. Fraileys Shale‏‎ (19 links)
  154. Eau Claire Formation‏‎ (19 links)
  155. Kinkaid Limestone‏‎ (19 links)
  156. Menard Limestone‏‎ (19 links)
  157. Wise Lake Formation‏‎ (19 links)
  158. Big Clifty Sandstone Member‏‎ (19 links)
  159. Battery Rock Sandstone Member‏‎ (19 links)
  160. Lemont Formation‏‎ (19 links)
  161. Kewaunee Formation‏‎ (18 links)
  162. Joliet Formation‏‎ (18 links)
  163. Oneota Dolomite‏‎ (18 links)
  164. Dutchtown Limestone‏‎ (18 links)
  165. Pounds Sandstone Member‏‎ (18 links)
  166. Tiskilwa Formation‏‎ (18 links)
  167. North Hill Group‏‎ (18 links)
  168. Downeys Bluff Limestone‏‎ (17 links)
  169. Franconia Formation‏‎ (17 links)
  170. Lower Devonian Series‏‎ (17 links)
  171. Winnebago Formation‏‎ (17 links)
  172. Lake Michigan Member‏‎ (17 links)
  173. Haney Limestone‏‎ (17 links)
  174. Karnak Limestone Member‏‎ (17 links)
  175. Beech Creek Limestone‏‎ (16 links)
  176. Yankeetown Sandstone‏‎ (16 links)
  177. Borden Siltstone‏‎ (16 links)
  178. Wilhelmi Formation‏‎ (16 links)
  179. Hannibal Shale‏‎ (16 links)
  180. Fredonia Limestone Member‏‎ (16 links)
  181. Spar Mountain Sandstone Member‏‎ (16 links)
  182. Herrin Coal Member‏‎ (15 links)
  183. Eminence Formation‏‎ (15 links)
  184. Keokuk Limestone‏‎ (15 links)
  185. Beaver Bend Limestone Member‏‎ (15 links)
  186. Brickeys Member‏‎ (15 links)
  187. Colchester Coal Member‏‎ (15 links)
  188. Forreston Member‏‎ (15 links)
  189. Walgreen Member‏‎ (15 links)
  190. Wyota Member‏‎ (15 links)
  191. Briton Member‏‎ (15 links)
  192. Grover Gravel‏‎ (15 links)
  193. Sherwood Member‏‎ (15 links)
  194. Eldena Member‏‎ (15 links)
  195. Fairplay Member‏‎ (15 links)
  196. Wall Member‏‎ (15 links)
  197. Beecher Member‏‎ (15 links)
  198. New London Member‏‎ (15 links)
  199. Mounds Gravel‏‎ (15 links)
  200. Rivoli Member‏‎ (15 links)
  201. Sample Sandstone Member‏‎ (15 links)
  202. Cypress Sandstone‏‎ (15 links)
  203. Elm Member‏‎ (15 links)
  204. Hazel Green Member‏‎ (15 links)
  205. Springville Shale‏‎ (15 links)
  206. Trivoli Sandstone Member‏‎ (15 links)
  207. Mincke Member‏‎ (15 links)
  208. Paleocene Series‏‎ (15 links)
  209. Peoria Silt‏‎ (15 links)
  210. Clement Member‏‎ (15 links)
  211. Pearl Formation‏‎ (15 links)
  212. Shullsburg Member‏‎ (15 links)
  213. Garnavillo Member‏‎ (15 links)
  214. Hazelwood Member‏‎ (15 links)
  215. Moredock Member‏‎ (15 links)
  216. Bethel Sandstone‏‎ (15 links)
  217. Pliocene Series‏‎ (15 links)
  218. Buckhorn Member‏‎ (15 links)
  219. Reelsville Limestone Member‏‎ (15 links)
  220. Hely Member‏‎ (15 links)
  221. Stillman Member‏‎ (15 links)
  222. Abernathy Member‏‎ (15 links)
  223. Victory Member‏‎ (15 links)
  224. Blomeyer Member‏‎ (15 links)
  225. Sinsinawa Member‏‎ (15 links)
  226. Establishment Member‏‎ (15 links)
  227. Francis Creek Shale Member‏‎ (15 links)
  228. Glencoe Member‏‎ (15 links)
  229. St. James Member‏‎ (15 links)
  230. Mortimer Member‏‎ (15 links)
  231. Dement Member‏‎ (15 links)
  232. Eagle Point Member‏‎ (15 links)
  233. Everett Member‏‎ (15 links)
  234. Glenhaven Member‏‎ (15 links)
  235. Strawbridge Member‏‎ (15 links)
  236. Baylis Formation‏‎ (15 links)
  237. Castlewood Member‏‎ (15 links)
  238. Daysville Dolomite Member‏‎ (15 links)
  239. Ford Station Limestone Member‏‎ (14 links)
  240. Hardinsburg Sandstone‏‎ (14 links)
  241. Orchard Creek Shale Member‏‎ (14 links)
  242. Metz Member‏‎ (14 links)
  243. Allard Limestone Member‏‎ (14 links)
  244. New Glarus Member‏‎ (14 links)
  245. Nutwood Shale Member‏‎ (14 links)
  246. Cave Hill Shale Member‏‎ (14 links)
  247. Rosiclare Sandstone Member‏‎ (14 links)
  248. Seelyville Coal Member‏‎ (14 links)
  249. Gordonville Member‏‎ (14 links)
  250. Harmony Hill Shale Member‏‎ (14 links)
  251. Loughridge Sandstone Member‏‎ (14 links)
  252. Starved Rock Sandstone Member‏‎ (14 links)
  253. Chazyan Stage‏‎ (14 links)
  254. Thebes Sandstone Member‏‎ (14 links)
  255. Tonti Sandstone Member‏‎ (14 links)
  256. Augusta Member‏‎ (14 links)
  257. Popcorn Sandstone Member‏‎ (14 links)
  258. Goreville Limestone Member‏‎ (14 links)
  259. Levias Limestone Member‏‎ (14 links)
  260. Dane Member‏‎ (14 links)
  261. Defiance Member‏‎ (14 links)
  262. Delavan Member‏‎ (14 links)
  263. Dubuque Formation‏‎ (14 links)
  264. Kingdom Sandstone Member‏‎ (14 links)
  265. Matson Member‏‎ (14 links)
  266. Medusa Member‏‎ (14 links)
  267. Blodgett Member‏‎ (14 links)
  268. Oglesby Member‏‎ (14 links)
  269. Cora Limestone Member‏‎ (14 links)
  270. Arsenal Member‏‎ (14 links)
  271. Bailey Limestone‏‎ (14 links)
  272. Negli Creek Limestone Member‏‎ (14 links)
  273. McNairy Formation‏‎ (14 links)
  274. Chana Member‏‎ (14 links)
  275. Scottsburg Limestone Member‏‎ (14 links)
  276. Sharpsboro Member‏‎ (14 links)
  277. Grassy Knob Chert‏‎ (14 links)
  278. Hennepin Member‏‎ (14 links)
  279. Tygett Sandstone Member‏‎ (14 links)
  280. Nokomis Sandstone Member‏‎ (14 links)
  281. Davis Coal Member‏‎ (14 links)
  282. Kress Member‏‎ (14 links)
  283. St. Louis Limestone‏‎ (14 links)
  284. Elgin Shale Member‏‎ (14 links)
  285. Tyson Member‏‎ (14 links)
  286. Boles Member‏‎ (14 links)
  287. Tuscaloosa Formation‏‎ (14 links)
  288. Edgewood Formation‏‎ (14 links)
  289. Excello Shale Member‏‎ (13 links)
  290. Friendsville Coal Member‏‎ (13 links)
  291. Greenup Limestone Member‏‎ (13 links)
  292. Gunn Member‏‎ (13 links)
  293. Lombard Dolomite Member‏‎ (13 links)
  294. Jamestown Coal Member‏‎ (13 links)
  295. La Salle Limestone Member‏‎ (13 links)
  296. Lonsdale Limestone Member‏‎ (13 links)
  297. Starrs Cave Limestone‏‎ (13 links)
  298. Edenian Stage‏‎ (13 links)
  299. Manley Coal Member‏‎ (13 links)
  300. Tioga Bentonite Bed‏‎ (13 links)
  301. Walche Limestone Member‏‎ (13 links)
  302. Mt. Carmel Sandstone Member‏‎ (13 links)
  303. Woodbury Limestone Member‏‎ (13 links)
  304. Pond Creek Coal Member‏‎ (13 links)
  305. Burroughs Limestone Member‏‎ (13 links)
  306. Reynoldsburg Coal Member‏‎ (13 links)
  307. Creal Springs Limestone Member‏‎ (13 links)
  308. De Graff Coal Member‏‎ (13 links)
  309. Effingham Limestone Member‏‎ (13 links)
  310. Exline Limestone Member‏‎ (13 links)
  311. Gila Limestone Member‏‎ (13 links)
  312. Grindstaff Sandstone Member‏‎ (13 links)
  313. Kenyon Member‏‎ (13 links)
  314. Hoing Sandstone Member‏‎ (13 links)
  315. Proviso Siltstone Member‏‎ (13 links)
  316. Lake Creek Coal Member‏‎ (13 links)
  317. Spring Lake Coal Member‏‎ (13 links)
  318. Summum Coal Member‏‎ (13 links)
  319. Allenby Coal Member‏‎ (13 links)
  320. Momence Sandstone Member‏‎ (13 links)
  321. Mt. Rorah Coal Member‏‎ (13 links)
  322. West Franklin Limestone Member‏‎ (13 links)
  323. New Haven Coal Member‏‎ (13 links)
  324. Bonpas Limestone Member‏‎ (13 links)
  325. Raccoon Creek Group‏‎ (13 links)
  326. Calhoun Coal Member‏‎ (13 links)
  327. Ramp Creek Limestone Member‏‎ (13 links)
  328. Conant Limestone Member‏‎ (13 links)
  329. Curlew Limestone Member‏‎ (13 links)
  330. De Koven Coal Member‏‎ (13 links)
  331. Fort Atkinson Limstone‏‎ (13 links)
  332. Gimlet Sandstone Member‏‎ (13 links)
  333. Grove Church Shale‏‎ (13 links)
  334. Harrodsburg Limestone Member‏‎ (13 links)
  335. Lacey Member‏‎ (13 links)
  336. Joppa Member‏‎ (13 links)
  337. Lawson Shale Member‏‎ (13 links)
  338. Springfield and Harrisburg Coal Members‏‎ (13 links)
  339. Louisiana Limestone‏‎ (13 links)
  340. McWain Sandstone Member‏‎ (13 links)
  341. Tripp Limestone Member‏‎ (13 links)
  342. Millersville Limestone Member‏‎ (13 links)
  343. Murphysboro Coal Member‏‎ (13 links)
  344. Wiley Coal Member‏‎ (13 links)
  345. Oak Grove Limestone Member‏‎ (13 links)
  346. Eocene Series‏‎ (13 links)
  347. Palestine Sandstone‏‎ (13 links)
  348. Browning Sandstone Member‏‎ (13 links)
  349. Pope Creek Coal Member‏‎ (13 links)
  350. Canton Shale Member‏‎ (13 links)
  351. Cooper Limestone Member‏‎ (13 links)
  352. Seville Limestone Member‏‎ (13 links)
  353. Shoal Creek Limestone Member‏‎ (13 links)
  354. Batestown Member‏‎ (13 links)
  355. De Long Coal Member‏‎ (13 links)
  356. Farmington Shale Member‏‎ (13 links)
  357. Galum Limestone Member‏‎ (13 links)
  358. Girardeau Limestone‏‎ (13 links)
  359. Gunter Sandstone‏‎ (13 links)
  360. Lovell Member‏‎ (13 links)
  361. Lowell Coal Member‏‎ (13 links)
  362. Marywood Member‏‎ (13 links)
  363. Sweetland Creek Shale‏‎ (13 links)
  364. Mecca Quarry Shale Member‏‎ (13 links)
  365. Vergennes Sandstone Member‏‎ (13 links)
  366. Anna Shale Member‏‎ (13 links)
  367. Mooseheart Member‏‎ (13 links)
  368. Walnut Grove Limestone Member‏‎ (13 links)
  369. Babylon Sandstone Member‏‎ (13 links)
  370. Murray Bluff Sandstone Member‏‎ (13 links)
  371. Bernadotte Sandstone Member‏‎ (13 links)
  372. New Richmond Sandstone‏‎ (13 links)
  373. Brainard Shale‏‎ (13 links)
  374. Palzo Sandstone Member‏‎ (13 links)
  375. Brush Coal Member‏‎ (13 links)
  376. Reel Limestone Member‏‎ (13 links)
  377. Saverton Shale‏‎ (13 links)
  378. Copperas Creek Sandstone Member‏‎ (13 links)
  379. Fox Valley Member‏‎ (13 links)
  380. Glen Dean Limestone‏‎ (13 links)
  381. Granger Sandstone Member‏‎ (13 links)
  382. Hall Limestone Member‏‎ (13 links)
  383. Mayfield Member‏‎ (13 links)
  384. Sylamore Sandstone‏‎ (13 links)
  385. Vermilionville Sandstone Member‏‎ (13 links)
  386. Willis Coal Member‏‎ (13 links)
  387. Piasa Limestone‏‎ (13 links)
  388. Cardiff Coal Member‏‎ (13 links)
  389. Rock Branch Coal Member‏‎ (13 links)
  390. Shakopee Dolomite‏‎ (13 links)
  391. Danville Coal Member‏‎ (13 links)
  392. Shumway Limestone Member‏‎ (13 links)
  393. Degonia Sandstone‏‎ (13 links)
  394. Dutch Creek Sandstone Member‏‎ (13 links)
  395. Finnie Sandstone Member‏‎ (13 links)
  396. Grassy Creek Shale‏‎ (13 links)
  397. Inglefield Sandstone Member‏‎ (13 links)
  398. Davis Member‏‎ (13 links)
  399. Litchfield Coal Member‏‎ (13 links)
  400. St. David Limestone Member‏‎ (13 links)
  401. Tar Springs Sandstone‏‎ (13 links)
  402. Trowbridge Coal Member‏‎ (13 links)
  403. Wise Ridge Coal Member‏‎ (13 links)
  404. Bidwell Coal Member‏‎ (13 links)
  405. Noix Oolite Member‏‎ (13 links)
  406. Breezy Hill Limestone Member‏‎ (13 links)
  407. Buelter Member‏‎ (13 links)
  408. Carlinville Limestone Member‏‎ (13 links)
  409. Reisner Limestone Member‏‎ (13 links)
  410. Rock Island Coal Member‏‎ (13 links)
  411. Coffeen Limestone Member‏‎ (13 links)
  412. Delwood Coal Member‏‎ (13 links)
  413. Dykersburg Shale Member‏‎ (13 links)
  414. Flannigan Coal Member‏‎ (13 links)
  415. Geneva Dolomite Member‏‎ (13 links)
  416. Charter Member‏‎ (13 links)
  417. Yorkville Member‏‎ (13 links)
  418. Isabel Sandstone Member‏‎ (13 links)
  419. Derby-Doerun Member‏‎ (13 links)
  420. Sorento Limestone Member‏‎ (13 links)
  421. Little Vermilion Limestone Member‏‎ (13 links)
  422. Macoupin Limestone Member‏‎ (13 links)
  423. Stonefort Limestone Member‏‎ (13 links)
  424. Clermont Shale Member‏‎ (13 links)
  425. Tarter Coal Member‏‎ (13 links)
  426. Abingdon Coal Member‏‎ (13 links)
  427. Vienna Limestone‏‎ (13 links)
  428. Assumption Coal Member‏‎ (13 links)
  429. Bankston Fork Limestone Member‏‎ (13 links)
  430. Witt Coal Member‏‎ (13 links)
  431. Bogota Limestone Member‏‎ (13 links)
  432. Omega Limestone Member‏‎ (13 links)
  433. Brereton Limestone Member‏‎ (13 links)
  434. Pleasantview Sandstone Member‏‎ (13 links)
  435. Bunje Limestone Member‏‎ (13 links)
  436. Chapel Coal Member‏‎ (13 links)
  437. Scottville Limestone Member‏‎ (13 links)
  438. Covel Conglomerate Member‏‎ (13 links)
  439. Shawneetown Coal Member‏‎ (13 links)
  440. Flat Creek Coal Member‏‎ (13 links)
  441. Peddicord Tongue‏‎ (13 links)
  442. Greenbush Coal Member‏‎ (13 links)
  443. Hanover Limestone Member‏‎ (13 links)
  444. Crane Member‏‎ (13 links)
  445. Hermon Coal Member‏‎ (13 links)
  446. Elmhurst Sandstone Member‏‎ (13 links)
  447. Jake Creek Sandstone Member‏‎ (13 links)
  448. Livingston Limestone Member‏‎ (13 links)
  449. Merom Sandstone Member‏‎ (13 links)
  450. Moccasin Springs Formation‏‎ (13 links)
  451. Athensville Coal Member‏‎ (13 links)
  452. New Burnside Coal Member‏‎ (13 links)
  453. Womac Coal Member‏‎ (13 links)
  454. Big Creek Shale Member‏‎ (13 links)
  455. Opdyke Coal Member‏‎ (13 links)
  456. Briar Hill Coal Member‏‎ (13 links)
  457. Pokeberry Limestone Member‏‎ (13 links)
  458. Purington Shale Member‏‎ (13 links)
  459. Rendleman Oolite Bed‏‎ (13 links)
  460. Cheltenham Clay Member‏‎ (13 links)
  461. Roodhouse Coal Member‏‎ (13 links)
  462. Cohn Coal Member‏‎ (13 links)
  463. Seahorne Limestone Member‏‎ (13 links)
  464. Cramer Limestone Member‏‎ (13 links)
  465. Shelbyville Coal Member‏‎ (13 links)
  466. Dix Limestone Member‏‎ (13 links)
  467. Spring Grove Member‏‎ (12 links)
  468. McCraney Limestone‏‎ (12 links)
  469. Bilyeu Member‏‎ (12 links)
  470. Otis Member‏‎ (12 links)
  471. Ashmore Tongue‏‎ (12 links)
  472. Morton Tongue‏‎ (12 links)
  473. Fults Member‏‎ (12 links)
  474. Robein Member‏‎ (12 links)
  475. Kerton Creek Coal Member‏‎ (12 links)
  476. Marcus Formation‏‎ (12 links)
  477. Birds Member‏‎ (12 links)
  478. Clayton Formation‏‎ (12 links)
  479. Drummond Member‏‎ (12 links)
  480. Manitowoc Member‏‎ (12 links)
  481. Galesville Sandstone‏‎ (12 links)
  482. Piatt Member‏‎ (12 links)
  483. Kidd Member‏‎ (12 links)
  484. State Pond Member‏‎ (12 links)
  485. Markgraf Member‏‎ (12 links)
  486. Montrose Chert Member‏‎ (12 links)
  487. Blanding Formation‏‎ (12 links)
  488. Rapid Member‏‎ (12 links)
  489. Clear Creek Chert‏‎ (12 links)
  490. Howardton Limestone Member‏‎ (12 links)
  491. Jordan Sandstone‏‎ (12 links)
  492. Offerman Member‏‎ (12 links)
  493. Rocher Member‏‎ (12 links)
  494. Sexton Creek Limestone‏‎ (12 links)
  495. Two Rivers Member‏‎ (12 links)
  496. St. Clair Limestone‏‎ (12 links)
  497. Troutman Member‏‎ (12 links)
  498. Misenheimer Shale Member‏‎ (12 links)
  499. Anvil Rock Sandstone Member‏‎ (12 links)
  500. Waltersburg Formation‏‎ (12 links)

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