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

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