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  1. Paleozoic Erathem‏‎ (947 links)
  2. Pennsylvanian Subsystem‏‎ (343 links)
  3. Absaroka Sequence‏‎ (339 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. Desmoinesian Series‏‎ (201 links)
  10. Pleistocene Series‏‎ (189 links)
  11. Champlainian Series‏‎ (182 links)
  12. Mississippian Subsystem‏‎ (182 links)
  13. Ottawa Limestone Megagroup‏‎ (174 links)
  14. McLeansboro Group‏‎ (129 links)
  15. Hunton Limestone Megagroup‏‎ (124 links)
  16. Carbondale Formation‏‎ (121 links)
  17. Blackriveran Stage‏‎ (117 links)
  18. Kewanee Group‏‎ (113 links)
  19. Pope Megagroup‏‎ (105 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. Galena Group‏‎ (71 links)
  29. Knox Dolomite Megagroup‏‎ (71 links)
  30. Croixan Series‏‎ (69 links)
  31. Trentonian Stage‏‎ (69 links)
  32. Silurian System‏‎ (68 links)
  33. Spoon Formation‏‎ (64 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. Mattoon Formation‏‎ (48 links)
  40. Kimmswick Subgroup‏‎ (48 links)
  41. Galatia Channel:Introduction‏‎ (46 links)
  42. Galatia Channel:Channels and Cyclothems: A Summary Model‏‎ (46 links)
  43. Galatia Channel:Evolution of a Peat - Contemporaneous Channel - The Galatia Channel, Middle Pennsylvanian, of the Illinois Basin‏‎ (46 links)
  44. Galatia Channel:Appendix‏‎ (45 links)
  45. Galatia Channel:Dykersburg (Shale) Member‏‎ (45 links)
  46. Galatia Channel:Houchin Creek Coal‏‎ (45 links)
  47. Galatia Channel:Plates‏‎ (45 links)
  48. Galatia Channel:Summary‏‎ (45 links)
  49. Galatia Channel:Tables‏‎ (45 links)
  50. Galatia Channel:Excello Shale Member‏‎ (45 links)
  51. Galatia Channel:Turner Mine Shale Member‏‎ (45 links)
  52. Galatia Channel:Conclusions‏‎ (45 links)
  53. Galatia Channel:Figures‏‎ (45 links)
  54. Galatia Channel:Similar Channels Affecting Other Coal Seams‏‎ (45 links)
  55. Galatia Channel:Underclay of Springfield Coal‏‎ (45 links)
  56. Galatia Channel:Galatia Member‏‎ (45 links)
  57. Galatia Channel:Springfield Coal‏‎ (45 links)
  58. Galatia Channel:References‏‎ (45 links)
  59. Galatia Channel:Delafield Member‏‎ (45 links)
  60. Galatia Channel:Hanover Limestone Member‏‎ (45 links)
  61. Galatia Channel:St. David Limestone Member‏‎ (45 links)
  62. Galatia Channel:Acknowledgments‏‎ (45 links)
  63. Galatia Channel:Discussion‏‎ (45 links)
  64. Galatia Channel:Other Channels Related to the Galatia Channel‏‎ (45 links)
  65. Galatia Channel:Stratigraphy‏‎ (45 links)
  66. McCormick Group‏‎ (44 links)
  67. Alexandrian Series‏‎ (43 links)
  68. Embayment Megagroup‏‎ (41 links)
  69. Abbott Formation‏‎ (41 links)
  70. Dresbachian Stage‏‎ (40 links)
  71. Dunleith Formation‏‎ (39 links)
  72. Bond Formation‏‎ (39 links)
  73. Glasford Formation‏‎ (39 links)
  74. Cincinnatian Series‏‎ (38 links)
  75. Gasperian Stage‏‎ (38 links)
  76. Wedron Group‏‎ (37 links)
  77. Holocene Series‏‎ (36 links)
  78. Atokan Series‏‎ (35 links)
  79. Knobs Megagroup‏‎ (35 links)
  80. Trempealeauan Stage‏‎ (34 links)
  81. New Albany Shale Group‏‎ (34 links)
  82. Galatia Channel:Peat Developed at Lowstand‏‎ (32 links)
  83. Galatia Channel:Sullivan Channel‏‎ (32 links)
  84. Decorah Subgroup‏‎ (32 links)
  85. Galatia Channel:Baker Coal and Winslow-Henderson Channel‏‎ (32 links)
  86. Galatia Channel:Effingham Channel‏‎ (32 links)
  87. Galatia Channel:Leslie Cemetery Channel‏‎ (32 links)
  88. Galatia Channel:Rapid Transgression, Gradual Regression‏‎ (32 links)
  89. Galatia Channel:Colchester Coal and Francis Creek Shale‏‎ (32 links)
  90. Galatia Channel:Linkage of Climate and Eustasy‏‎ (32 links)
  91. Galatia Channel:Relationship of Effingham and Galatia Channels‏‎ (32 links)
  92. Galatia Channel:Model of Channel Development‏‎ (32 links)
  93. Galatia Channel:Danville Coal‏‎ (32 links)
  94. Galatia Channel:Murphysboro Coal and Oraville Channel‏‎ (32 links)
  95. Galatia Channel:Other Channels‏‎ (32 links)
  96. Galatia Channel:Herrin Coal, Energy Shale, and Walshville Channel‏‎ (32 links)
  97. Banner Formation‏‎ (31 links)
  98. Mason Group‏‎ (31 links)
  99. Maquoketa Shale Group‏‎ (30 links)
  100. Caseyville Formation‏‎ (30 links)
  101. Niagaran Series‏‎ (29 links)
  102. Morrowan Series‏‎ (29 links)
  103. Grand Detour Formation‏‎ (29 links)
  104. Franconian Stage‏‎ (28 links)
  105. Potsdam Sandstone Megagroup‏‎ (28 links)
  106. Cedar Bluff Limestone Group‏‎ (27 links)
  107. Virgilian Series‏‎ (27 links)
  108. Mesozoic Erathem‏‎ (27 links)
  109. Mt. Simon Sandstone‏‎ (27 links)
  110. Kinderhookian Series‏‎ (26 links)
  111. Pecatonica Formation‏‎ (26 links)
  112. Cretaceous System‏‎ (26 links)
  113. Genevievian Stage‏‎ (26 links)
  114. Joachim Dolomite‏‎ (26 links)
  115. Lingle Formation‏‎ (25 links)
  116. Okaw Group‏‎ (25 links)
  117. Mifflin Formation‏‎ (25 links)
  118. Prairie du Chien Group‏‎ (25 links)
  119. Paint Creek Group‏‎ (25 links)
  120. Glenwood Formation‏‎ (24 links)
  121. West Baden Group‏‎ (24 links)
  122. Gulfian Series‏‎ (24 links)
  123. Wapsipinicon Limestone‏‎ (23 links)
  124. Lake Michigan Formation‏‎ (23 links)
  125. Tertiary System‏‎ (23 links)
  126. Canadian Series‏‎ (23 links)
  127. Renault Limestone‏‎ (23 links)
  128. Upper Devonian Series‏‎ (23 links)
  129. Ste. Genevieve Limestone‏‎ (23 links)
  130. Hombergian Stage‏‎ (22 links)
  131. Henry Formation‏‎ (22 links)
  132. Grand Tower Limestone‏‎ (22 links)
  133. Ridenhower Formation‏‎ (22 links)
  134. Cedar Valley Limestone‏‎ (21 links)
  135. Equality Formation‏‎ (21 links)
  136. Ironton Sandstone‏‎ (21 links)
  137. Maysvillian Stage‏‎ (21 links)
  138. Nachusa Formation‏‎ (21 links)
  139. Scales Shale‏‎ (21 links)
  140. Quimbys Mill Formation‏‎ (21 links)
  141. Salem Limestone‏‎ (21 links)
  142. Golconda Group‏‎ (21 links)
  143. Roxana Silt‏‎ (20 links)
  144. Kankakee Formation‏‎ (20 links)
  145. St. Peter Sandstone‏‎ (20 links)
  146. Guttenberg Formation‏‎ (19 links)
  147. Aux Vases Sandstone‏‎ (19 links)
  148. Menard Limestone‏‎ (19 links)
  149. Kings Lake Formation‏‎ (19 links)
  150. Kinkaid Limestone‏‎ (19 links)
  151. Richmondian Stage‏‎ (19 links)
  152. Spechts Ferry Formation‏‎ (19 links)
  153. Ullin Limestone‏‎ (19 links)
  154. Clore Formation‏‎ (19 links)
  155. Fraileys Shale‏‎ (19 links)
  156. Lemont Formation‏‎ (19 links)
  157. Big Clifty Sandstone Member‏‎ (19 links)
  158. Eau Claire Formation‏‎ (19 links)
  159. Wise Lake Formation‏‎ (19 links)
  160. Battery Rock Sandstone Member‏‎ (19 links)
  161. Pounds Sandstone Member‏‎ (18 links)
  162. Tiskilwa Formation‏‎ (18 links)
  163. North Hill Group‏‎ (18 links)
  164. Oneota Dolomite‏‎ (18 links)
  165. Seelyville Coal Member‏‎ (18 links)
  166. Kewaunee Formation‏‎ (18 links)
  167. Joliet Formation‏‎ (18 links)
  168. Dutchtown Limestone‏‎ (18 links)
  169. Lower Devonian Series‏‎ (17 links)
  170. Winnebago Formation‏‎ (17 links)
  171. Karnak Limestone Member‏‎ (17 links)
  172. Haney Limestone‏‎ (17 links)
  173. Franconia Formation‏‎ (17 links)
  174. Herrin Coal Member‏‎ (17 links)
  175. Downeys Bluff Limestone‏‎ (17 links)
  176. Beech Creek Limestone‏‎ (16 links)
  177. St. David Limestone Member‏‎ (16 links)
  178. Spar Mountain Sandstone Member‏‎ (16 links)
  179. Borden Siltstone‏‎ (16 links)
  180. Davis Coal Member‏‎ (16 links)
  181. Lake Michigan Member‏‎ (16 links)
  182. Hannibal Shale‏‎ (16 links)
  183. Francis Creek Shale Member‏‎ (16 links)
  184. Yankeetown Sandstone‏‎ (16 links)
  185. Fredonia Limestone Member‏‎ (16 links)
  186. Briar Hill Coal Member‏‎ (16 links)
  187. Wilhelmi Formation‏‎ (16 links)
  188. Beaver Bend Limestone Member‏‎ (15 links)
  189. New London Member‏‎ (15 links)
  190. Oak Grove Limestone Member‏‎ (15 links)
  191. Brickeys Member‏‎ (15 links)
  192. Vermilionville Sandstone Member‏‎ (15 links)
  193. Rivoli Member‏‎ (15 links)
  194. Sample Sandstone Member‏‎ (15 links)
  195. Colchester Coal Member‏‎ (15 links)
  196. Pliocene Series‏‎ (15 links)
  197. Eldena Member‏‎ (15 links)
  198. Forreston Member‏‎ (15 links)
  199. Mounds Gravel‏‎ (15 links)
  200. Mincke Member‏‎ (15 links)
  201. Stillman Member‏‎ (15 links)
  202. Briton Member‏‎ (15 links)
  203. Victory Member‏‎ (15 links)
  204. Shullsburg Member‏‎ (15 links)
  205. Elm Member‏‎ (15 links)
  206. Fairplay Member‏‎ (15 links)
  207. Pearl Formation‏‎ (15 links)
  208. Hazel Green Member‏‎ (15 links)
  209. Eminence Formation‏‎ (15 links)
  210. Moredock Member‏‎ (15 links)
  211. Beecher Member‏‎ (15 links)
  212. St. James Member‏‎ (15 links)
  213. Canton Shale Member‏‎ (15 links)
  214. Reelsville Limestone Member‏‎ (15 links)
  215. Cypress Sandstone‏‎ (15 links)
  216. Hazelwood Member‏‎ (15 links)
  217. Strawbridge Member‏‎ (15 links)
  218. Clement Member‏‎ (15 links)
  219. Sinsinawa Member‏‎ (15 links)
  220. Baylis Formation‏‎ (15 links)
  221. Garnavillo Member‏‎ (15 links)
  222. Hely Member‏‎ (15 links)
  223. Mortimer Member‏‎ (15 links)
  224. Bethel Sandstone‏‎ (15 links)
  225. Buckhorn Member‏‎ (15 links)
  226. Dykersburg Shale Member‏‎ (15 links)
  227. Establishment Member‏‎ (15 links)
  228. Blomeyer Member‏‎ (15 links)
  229. Walgreen Member‏‎ (15 links)
  230. Wyota Member‏‎ (15 links)
  231. Dement Member‏‎ (15 links)
  232. Eagle Point Member‏‎ (15 links)
  233. Everett Member‏‎ (15 links)
  234. Glencoe Member‏‎ (15 links)
  235. Keokuk Limestone‏‎ (15 links)
  236. Abernathy Member‏‎ (15 links)
  237. Wall Member‏‎ (15 links)
  238. Daysville Dolomite Member‏‎ (15 links)
  239. Glenhaven Member‏‎ (15 links)
  240. Springville Shale‏‎ (15 links)
  241. Trivoli Sandstone Member‏‎ (15 links)
  242. Castlewood Member‏‎ (15 links)
  243. Sherwood Member‏‎ (15 links)
  244. Paleocene Series‏‎ (15 links)
  245. Grover Gravel‏‎ (15 links)
  246. Elgin Shale Member‏‎ (14 links)
  247. Allard Limestone Member‏‎ (14 links)
  248. Murphysboro Coal Member‏‎ (14 links)
  249. Cave Hill Shale Member‏‎ (14 links)
  250. Gordonville Member‏‎ (14 links)
  251. Orchard Creek Shale Member‏‎ (14 links)
  252. Augusta Member‏‎ (14 links)
  253. McNairy Formation‏‎ (14 links)
  254. Abingdon Coal Member‏‎ (14 links)
  255. Peoria Silt‏‎ (14 links)
  256. Goreville Limestone Member‏‎ (14 links)
  257. Delavan Member‏‎ (14 links)
  258. Levias Limestone Member‏‎ (14 links)
  259. Chazyan Stage‏‎ (14 links)
  260. Matson Member‏‎ (14 links)
  261. Thebes Sandstone Member‏‎ (14 links)
  262. Medusa Member‏‎ (14 links)
  263. Oglesby Member‏‎ (14 links)
  264. Tygett Sandstone Member‏‎ (14 links)
  265. Defiance Member‏‎ (14 links)
  266. Dubuque Formation‏‎ (14 links)
  267. Kingdom Sandstone Member‏‎ (14 links)
  268. Anna Shale Member‏‎ (14 links)
  269. Negli Creek Limestone Member‏‎ (14 links)
  270. St. Louis Limestone‏‎ (14 links)
  271. Tyson Member‏‎ (14 links)
  272. Scottsburg Limestone Member‏‎ (14 links)
  273. Sharpsboro Member‏‎ (14 links)
  274. Dane Member‏‎ (14 links)
  275. Tuscaloosa Formation‏‎ (14 links)
  276. Nokomis Sandstone Member‏‎ (14 links)
  277. Blodgett Member‏‎ (14 links)
  278. Pleasantview Sandstone Member‏‎ (14 links)
  279. Cora Limestone Member‏‎ (14 links)
  280. Hennepin Member‏‎ (14 links)
  281. Arsenal Member‏‎ (14 links)
  282. Bailey Limestone‏‎ (14 links)
  283. Starved Rock Sandstone Member‏‎ (14 links)
  284. Tonti Sandstone Member‏‎ (14 links)
  285. Chana Member‏‎ (14 links)
  286. Raccoon Creek Group‏‎ (14 links)
  287. Greenbush Coal Member‏‎ (14 links)
  288. Grassy Knob Chert‏‎ (14 links)
  289. Hanover Limestone Member‏‎ (14 links)
  290. Kress Member‏‎ (14 links)
  291. Metz Member‏‎ (14 links)
  292. New Glarus Member‏‎ (14 links)
  293. Nutwood Shale Member‏‎ (14 links)
  294. Brereton Limestone Member‏‎ (14 links)
  295. Rosiclare Sandstone Member‏‎ (14 links)
  296. Edgewood Formation‏‎ (14 links)
  297. Isabel Sandstone Member‏‎ (14 links)
  298. Hardinsburg Sandstone‏‎ (14 links)
  299. Loughridge Sandstone Member‏‎ (14 links)
  300. Big Creek Shale Member‏‎ (14 links)
  301. Boles Member‏‎ (14 links)
  302. Popcorn Sandstone Member‏‎ (14 links)
  303. Ford Station Limestone Member‏‎ (14 links)
  304. Harmony Hill Shale Member‏‎ (14 links)
  305. Louisiana Limestone‏‎ (13 links)
  306. McWain Sandstone Member‏‎ (13 links)
  307. Millersville Limestone Member‏‎ (13 links)
  308. Palestine Sandstone‏‎ (13 links)
  309. Sylamore Sandstone‏‎ (13 links)
  310. Pope Creek Coal Member‏‎ (13 links)
  311. Burroughs Limestone Member‏‎ (13 links)
  312. Willis Coal Member‏‎ (13 links)
  313. Seville Limestone Member‏‎ (13 links)
  314. Creal Springs Limestone Member‏‎ (13 links)
  315. Shoal Creek Limestone Member‏‎ (13 links)
  316. Exline Limestone Member‏‎ (13 links)
  317. Gila Limestone Member‏‎ (13 links)
  318. Grove Church Shale‏‎ (13 links)
  319. Harrodsburg Limestone Member‏‎ (13 links)
  320. Batestown Member‏‎ (13 links)
  321. Crane Member‏‎ (13 links)
  322. Elmhurst Sandstone Member‏‎ (13 links)
  323. Lawson Shale Member‏‎ (13 links)
  324. Lowell Coal Member‏‎ (13 links)
  325. Edenian Stage‏‎ (13 links)
  326. Marywood Member‏‎ (13 links)
  327. Mecca Quarry Shale Member‏‎ (13 links)
  328. Allenby Coal Member‏‎ (13 links)
  329. Mooseheart Member‏‎ (13 links)
  330. Murray Bluff Sandstone Member‏‎ (13 links)
  331. Sorento Limestone Member‏‎ (13 links)
  332. New Richmond Sandstone‏‎ (13 links)
  333. Bonpas Limestone Member‏‎ (13 links)
  334. Palzo Sandstone Member‏‎ (13 links)
  335. Tar Springs Sandstone‏‎ (13 links)
  336. Calhoun Coal Member‏‎ (13 links)
  337. Trowbridge Coal Member‏‎ (13 links)
  338. Reel Limestone Member‏‎ (13 links)
  339. Saverton Shale‏‎ (13 links)
  340. Conant Limestone Member‏‎ (13 links)
  341. Wise Ridge Coal Member‏‎ (13 links)
  342. Curlew Limestone Member‏‎ (13 links)
  343. De Long Coal Member‏‎ (13 links)
  344. Fort Atkinson Limstone‏‎ (13 links)
  345. Gimlet Sandstone Member‏‎ (13 links)
  346. Gunter Sandstone‏‎ (13 links)
  347. Gunn Member‏‎ (13 links)
  348. Lombard Dolomite Member‏‎ (13 links)
  349. Stonefort Limestone Member‏‎ (13 links)
  350. Piasa Limestone‏‎ (13 links)
  351. Browning Sandstone Member‏‎ (13 links)
  352. Tarter Coal Member‏‎ (13 links)
  353. Vienna Limestone‏‎ (13 links)
  354. Rock Branch Coal Member‏‎ (13 links)
  355. Cooper Limestone Member‏‎ (13 links)
  356. Witt Coal Member‏‎ (13 links)
  357. Shakopee Dolomite‏‎ (13 links)
  358. Shumway Limestone Member‏‎ (13 links)
  359. Farmington Shale Member‏‎ (13 links)
  360. Galum Limestone Member‏‎ (13 links)
  361. Girardeau Limestone‏‎ (13 links)
  362. Hall Limestone Member‏‎ (13 links)
  363. Kenyon Member‏‎ (13 links)
  364. Proviso Siltstone Member‏‎ (13 links)
  365. Babylon Sandstone Member‏‎ (13 links)
  366. Bernadotte Sandstone Member‏‎ (13 links)
  367. Noix Oolite Member‏‎ (13 links)
  368. Brainard Shale‏‎ (13 links)
  369. Brush Coal Member‏‎ (13 links)
  370. Reisner Limestone Member‏‎ (13 links)
  371. Rock Island Coal Member‏‎ (13 links)
  372. Copperas Creek Sandstone Member‏‎ (13 links)
  373. Womac Coal Member‏‎ (13 links)
  374. Degonia Sandstone‏‎ (13 links)
  375. Dutch Creek Sandstone Member‏‎ (13 links)
  376. Fox Valley Member‏‎ (13 links)
  377. Glen Dean Limestone‏‎ (13 links)
  378. Granger Sandstone Member‏‎ (13 links)
  379. Lacey Member‏‎ (13 links)
  380. Inglefield Sandstone Member‏‎ (13 links)
  381. Litchfield Coal Member‏‎ (13 links)
  382. Little Vermilion Limestone Member‏‎ (13 links)
  383. Macoupin Limestone Member‏‎ (13 links)
  384. Anvil Rock Sandstone Member‏‎ (13 links)
  385. Yorkville Member‏‎ (13 links)
  386. Starrs Cave Limestone‏‎ (13 links)
  387. Omega Limestone Member‏‎ (13 links)
  388. Tioga Bentonite Bed‏‎ (13 links)
  389. Walche Limestone Member‏‎ (13 links)
  390. Scottville Limestone Member‏‎ (13 links)
  391. Woodbury Limestone Member‏‎ (13 links)
  392. Danville Coal Member‏‎ (13 links)
  393. Delwood Coal Member‏‎ (13 links)
  394. Finnie Sandstone Member‏‎ (13 links)
  395. Grassy Creek Shale‏‎ (13 links)
  396. Lovell Member‏‎ (13 links)
  397. Jake Creek Sandstone Member‏‎ (13 links)
  398. Livingston Limestone Member‏‎ (13 links)
  399. Merom Sandstone Member‏‎ (13 links)
  400. Moccasin Springs Formation‏‎ (13 links)
  401. New Burnside Coal Member‏‎ (13 links)
  402. Bidwell Coal Member‏‎ (13 links)
  403. Spring Lake Coal Member‏‎ (13 links)
  404. Opdyke Coal Member‏‎ (13 links)
  405. Breezy Hill Limestone Member‏‎ (13 links)
  406. Pokeberry Limestone Member‏‎ (13 links)
  407. Buelter Member‏‎ (13 links)
  408. Purington Shale Member‏‎ (13 links)
  409. Carlinville Limestone Member‏‎ (13 links)
  410. Rendleman Oolite Bed‏‎ (13 links)
  411. Coffeen Limestone Member‏‎ (13 links)
  412. West Franklin Limestone Member‏‎ (13 links)
  413. Seahorne Limestone Member‏‎ (13 links)
  414. Shelbyville Coal Member‏‎ (13 links)
  415. Flannigan Coal Member‏‎ (13 links)
  416. Geneva Dolomite Member‏‎ (13 links)
  417. Hermon Coal Member‏‎ (13 links)
  418. Mayfield Member‏‎ (13 links)
  419. Jamestown Coal Member‏‎ (13 links)
  420. Lonsdale Limestone Member‏‎ (13 links)
  421. Manley Coal Member‏‎ (13 links)
  422. Assumption Coal Member‏‎ (13 links)
  423. Mt. Carmel Sandstone Member‏‎ (13 links)
  424. Bankston Fork Limestone Member‏‎ (13 links)
  425. Bogota Limestone Member‏‎ (13 links)
  426. Pond Creek Coal Member‏‎ (13 links)
  427. Bunje Limestone Member‏‎ (13 links)
  428. Tripp Limestone Member‏‎ (13 links)
  429. Reynoldsburg Coal Member‏‎ (13 links)
  430. Chapel Coal Member‏‎ (13 links)
  431. Wiley Coal Member‏‎ (13 links)
  432. Eocene Series‏‎ (13 links)
  433. Dix Limestone Member‏‎ (13 links)
  434. Flat Creek Coal Member‏‎ (13 links)
  435. Greenup Limestone Member‏‎ (13 links)
  436. Davis Member‏‎ (13 links)
  437. La Salle Limestone Member‏‎ (13 links)
  438. Clermont Shale Member‏‎ (13 links)
  439. Momence Sandstone Member‏‎ (13 links)
  440. Athensville Coal Member‏‎ (13 links)
  441. Mt. Rorah Coal Member‏‎ (13 links)
  442. New Haven Coal Member‏‎ (13 links)
  443. Sweetland Creek Shale‏‎ (13 links)
  444. Ramp Creek Limestone Member‏‎ (13 links)
  445. Vergennes Sandstone Member‏‎ (13 links)
  446. Cheltenham Clay Member‏‎ (13 links)
  447. Walnut Grove Limestone Member‏‎ (13 links)
  448. Cohn Coal Member‏‎ (13 links)
  449. Cramer Limestone Member‏‎ (13 links)
  450. De Graff Coal Member‏‎ (13 links)
  451. Effingham Limestone Member‏‎ (13 links)
  452. Excello Shale Member‏‎ (13 links)
  453. Friendsville Coal Member‏‎ (13 links)
  454. Grindstaff Sandstone Member‏‎ (13 links)
  455. Charter Member‏‎ (13 links)
  456. Hoing Sandstone Member‏‎ (13 links)
  457. Joppa Member‏‎ (13 links)
  458. Derby-Doerun Member‏‎ (13 links)
  459. Lake Creek Coal Member‏‎ (13 links)
  460. Markgraf Member‏‎ (12 links)
  461. Piatt Member‏‎ (12 links)
  462. Montrose Chert Member‏‎ (12 links)
  463. Bilyeu Member‏‎ (12 links)
  464. St. Clair Limestone‏‎ (12 links)
  465. Troutman Member‏‎ (12 links)
  466. Rapid Member‏‎ (12 links)
  467. Waltersburg Formation‏‎ (12 links)
  468. Drummond Member‏‎ (12 links)
  469. Fults Member‏‎ (12 links)
  470. Jordan Sandstone‏‎ (12 links)
  471. Kidd Member‏‎ (12 links)
  472. Manitowoc Member‏‎ (12 links)
  473. Birds Member‏‎ (12 links)
  474. Offerman Member‏‎ (12 links)
  475. Rocher Member‏‎ (12 links)
  476. Sexton Creek Limestone‏‎ (12 links)
  477. Porters Creek Formation‏‎ (12 links)
  478. Galesville Sandstone‏‎ (12 links)
  479. Howardton Limestone Member‏‎ (12 links)
  480. Misenheimer Shale Member‏‎ (12 links)
  481. Two Rivers Member‏‎ (12 links)
  482. Neda Formation‏‎ (12 links)
  483. Blanding Formation‏‎ (12 links)
  484. Potosi Dolomite‏‎ (12 links)
  485. Clear Creek Chert‏‎ (12 links)
  486. Warsaw Shale‏‎ (12 links)
  487. Schweizer Member‏‎ (12 links)
  488. Wilcox Formation‏‎ (12 links)
  489. Beverly Tongue‏‎ (12 links)
  490. Haeger Member‏‎ (12 links)
  491. Shorewood Member‏‎ (12 links)
  492. Plaines Member‏‎ (12 links)
  493. Elwood Formation‏‎ (12 links)
  494. Search:Cenozoic Erathem‏‎ (12 links)
  495. McClearys Bluff Coal Member‏‎ (12 links)
  496. Wadsworth Formation‏‎ (12 links)
  497. Backbone Limestone‏‎ (12 links)
  498. Spring Grove Member‏‎ (12 links)
  499. Brandon Bridge Member‏‎ (12 links)
  500. Prospect Hill Siltstone‏‎ (12 links)

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