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Bell Springs Formation

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The formation composed of very fine grained limy sandstone that is distinguished from upper part of Nugget by presence of red to purple-red shale and lime cemented siltstone in beds less than 0.1 ft thick and by presence of calcareous firmly indurated beds 1–4 ft thick that are ripple
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Pipiringos, G.N., 1968, Correlation and nomenclature of some Triassic and Jurassic rocks in south-central Wyoming, IN Shorter contributions to general geology, 1967: U.S. Geological Survey Professional Paper, 594-D, p.
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Branson, E. B.; Mehl, M. G. (1932), "Footprint records from Cretaceous, Triassic, and Pennsylvanian",
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laminated and weather to square faced ledges. May correlate with upper part of Chinle Formation.
539: 395: 126: 8: 463: 471: 481: 475: 192: 518: 335: 252: 214: 201: 175: 162: 74: 27: 467: 419: 49: 94: 59: 141: 99: 43: 347: 343: 89: 84: 69: 64: 54: 35: 234: 104: 79: 339: 115: 31: 480:, Berkeley: University of California Press, pp. 1–880, 462: 425: 516: 375:List of stratigraphic units with theropod tracks 300: 272: 503:Bulletin of the Geological Society of America 499: 434: 280:Bell Springs Formation (the United States) 114: 550:Sandstone formations of the United States 330:of the Nugget Sandstone in Wyoming and a 370:List of dinosaur-bearing rock formations 356:have been reported from the formation. 517: 16:Stratigraphic Unit in Wyoming and Utah 431:Weishampel et al., 2004, pp.517-607 13: 14: 571: 409: 530:Triassic System of North America 396:"National Geologic Map Database" 308:Bell Springs Formation (Wyoming) 299: 292: 271: 264: 245: 47: 456: 525:Geologic formations of Wyoming 443: 388: 1: 555:Ichnofossiliferous formations 382: 283:Show map of the United States 193:Approximate paleocoordinates 7: 535:Triassic geology of Wyoming 477:The Dinosauria, 2nd edition 363: 10: 576: 258: 240: 230: 191: 152: 147: 137: 132: 122: 113: 26: 21: 440:Branson & Mehl, 1932 560:Paleontology in Wyoming 353:Agialopous wyomingensis 416:Bell Springs Formation 22:Bell Springs Formation 464:Weishampel, David B. 127:Geological formation 350:tracks assigned to 311:Show map of Wyoming 211: /  172: /  28:Stratigraphic range 472:Osmólska, Halszka 334:in Utah. It is a 320: 319: 567: 511: 496: 495: 494: 451: 447: 441: 438: 432: 429: 423: 413: 407: 406: 404: 402: 392: 312: 303: 302: 296: 284: 275: 274: 268: 251: 249: 248: 226: 225: 223: 222: 221: 216: 212: 209: 208: 207: 204: 187: 186: 184: 183: 182: 177: 173: 170: 169: 168: 165: 118: 109: 46: 19: 18: 575: 574: 570: 569: 568: 566: 565: 564: 515: 514: 492: 490: 488: 459: 454: 448: 444: 439: 435: 430: 426: 414: 410: 400: 398: 394: 393: 389: 385: 366: 316: 315: 314: 313: 310: 309: 306: 305: 304: 287: 286: 285: 282: 281: 278: 277: 276: 246: 244: 219: 217: 213: 210: 205: 202: 200: 198: 197: 180: 178: 174: 171: 166: 163: 161: 159: 158: 108: 107: 102: 97: 92: 87: 82: 77: 72: 67: 62: 57: 52: 41: 40: 38: 17: 12: 11: 5: 573: 563: 562: 557: 552: 547: 545:Rhaetian Stage 542: 537: 532: 527: 513: 512: 497: 486: 458: 455: 453: 452: 442: 433: 424: 408: 386: 384: 381: 380: 379: 378: 377: 365: 362: 318: 317: 307: 298: 297: 291: 290: 289: 288: 279: 270: 269: 263: 262: 261: 260: 259: 256: 255: 242: 238: 237: 232: 228: 227: 195: 189: 188: 176:43.0°N 108.8°W 156: 150: 149: 145: 144: 139: 135: 134: 130: 129: 124: 120: 119: 111: 110: 103: 98: 93: 88: 83: 78: 73: 68: 63: 58: 53: 48: 24: 23: 15: 9: 6: 4: 3: 2: 572: 561: 558: 556: 553: 551: 548: 546: 543: 541: 538: 536: 533: 531: 528: 526: 523: 522: 520: 509: 505: 504: 498: 489: 487:0-520-24209-2 483: 479: 478: 473: 469: 468:Dodson, Peter 465: 461: 460: 446: 437: 428: 421: 417: 412: 397: 391: 387: 376: 373: 372: 371: 368: 367: 361: 357: 355: 354: 349: 345: 341: 337: 336:Late Triassic 333: 329: 325: 295: 267: 257: 254: 253:United States 243: 239: 236: 233: 229: 224: 215:19.2°N 46.4°W 196: 194: 190: 185: 157: 155: 151: 146: 143: 140: 136: 131: 128: 125: 121: 117: 112: 106: 101: 96: 91: 86: 81: 76: 71: 66: 61: 56: 51: 45: 42:221–202  37: 33: 29: 25: 20: 540:Norian Stage 507: 501: 491:, retrieved 476: 457:Bibliography 445: 436: 427: 411: 399:. Retrieved 390: 358: 351: 331: 327: 324:Bell Springs 323: 321: 181:43.0; -108.8 420:Fossilworks 401:January 22, 220:19.2; -46.4 218: / 179: / 154:Coordinates 519:Categories 493:2019-02-21 383:References 510:: 284–285 346:) Fossil 332:formation 142:Sandstone 133:Lithology 474:(2004), 364:See also 348:theropod 344:Rhaetian 167:108°48′W 148:Location 36:Rhaetian 450:D1-D26. 241:Country 235:Wyoming 206:46°24′W 203:19°12′N 164:43°00′N 138:Primary 484:  340:Norian 328:member 250:  231:Region 32:Norian 326:is a 482:ISBN 422:.org 403:2023 322:The 123:Type 50:PreꞒ 418:at 342:to 521:: 508:42 506:, 470:; 466:; 100:Pg 44:Ma 30:: 405:. 338:( 105:N 95:K 90:J 85:T 80:P 75:C 70:D 65:S 60:O 55:Ꞓ 39:~ 34:-

Index

Stratigraphic range
Norian
Rhaetian
Ma
PreꞒ

O
S
D
C
P
T
J
K
Pg
N

Geological formation
Sandstone
Coordinates
43°00′N 108°48′W / 43.0°N 108.8°W / 43.0; -108.8
Approximate paleocoordinates
19°12′N 46°24′W / 19.2°N 46.4°W / 19.2; -46.4
Wyoming
United States
Bell Springs Formation is located in the United States
Bell Springs Formation is located in Wyoming
Late Triassic
Norian
Rhaetian

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