294:
266:
247:
301:
273:
116:
359:
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
449:
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.
415:
549:
374:
265:
502:
352:
293:
529:
369:
524:
554:
534:
160:
199:
485:
559:
153:
500:
Branson, E. B.; Mehl, M. G. (1932), "Footprint records from
Cretaceous, Triassic, and Pennsylvanian",
544:
360:
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:-
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.