313:
285:
106:
320:
292:
498:
and Adrian Hunt in 1987. Lucas and Hunt subsequently reduced the unit to member rank within the
Moenkopi Formation, but its inclusion in the Moenkopi has not been universally accepted. Some red beds previously mapped as
777:
Nesbitt, Sterling J.; Lucas, Spencer G.; Schoch, Rainer R. (2006). "A new, large archosauriform from the Anton Chico Member of the upper
Moenkopi Formation (Middle Triassic), east-central New Mexico, USA".
756:
Schoch, Rainer R.; Nesbitt, Sterling Müller; Lucas, Spencer G.; Boy, Jürgen A. (March 1, 2010). "The reptile assemblage from the
Moenkopi Formation (Middle Triassic) of New Mexico".
736:
494:
The beds making up this formation were originally the lowest informal member of the Santa Rosa
Formation, but were designated as the Anton Chico Formation by
110:
Anton Chico
Formation along I-25 in Glorieta Pass. The Anton Chico is the red beds at lower right. Overlying this is tan beds of the Santa Rosa Formation.
284:
312:
195:
808:
648:
403:
129:
676:
620:
387:, including a basal conglomerate bed. The total thickness of the formation is 22.1 meters (73 ft) at the
677:"Type section of the Permian Bernal Formation and the Permian-Triassic boundary in north-central New Mexico"
188:
503:, particularly in its more northern and western exposures, are now thought to belong to the Anton Chico.
255:
705:"Stratigraphy of the Anton Chico and Santa Rosa Formations, Triassic of east-central New Mexico"
396:
384:
176:
119:
8:
346:
716:
451:
419:
621:"The Moenkopi Formation in east-central New Mexico: stratigraphy and vertebrate fauna"
459:. Reptile fossils are more common and diverse than in the Holbrook Member and include
791:
446:
769:
418:
The Anton Chico
Formation was originally correlated with the Holbrook Member of the
375:
The formation consists mostly of very fine to medium-grained, red-brown to gray-red
787:
765:
500:
495:
364:
649:"The saga of the Dockum Group and the case of the Texas/New Mexico boundary fault"
438:
424:
361:
737:"Revised Triassic stratigraphy in the Tucumcari basin, east-central New Mexico"
472:
802:
481:
460:
456:
407:
357:
240:
210:
197:
139:
64:
29:
468:
433:
429:
388:
445:. Amphibian fossils are abundant and diverse. These include fragments of
392:
39:
720:
704:
442:
350:
230:
105:
84:
49:
476:
475:. The formation has also yielded two incomplete skeletons of a large
464:
376:
162:
89:
743:. New Mexico Museum of Natural History and Science. pp. 150–170
380:
172:
79:
74:
59:
54:
44:
354:
94:
69:
572:
560:
780:
Neues
Jahrbuch für Geologie und Paläontologie - Abhandlungen
758:
Neues
Jahrbuch für Geologie und Paläontologie - Abhandlungen
550:
548:
656:
New Mexico Bureau of Mines & Mineral
Resources Bulletin
545:
535:
533:
520:
518:
516:
741:
Dawn of the age of dinosaurs in the
American southwest
596:
755:
578:
530:
513:
776:
566:
428:in the formation. The formation also contains the
584:
800:
618:
554:
319:
291:
674:
602:
489:
104:
734:
709:Arizona-Nevada Academy of Science Journal
702:
539:
524:
299:Anton Chico Formation (the United States)
628:New Mexico Geological Society Guidebook
619:Boy, JA; Schoch, RR; Lucas, SG (2001).
801:
646:
590:
739:. In Lucas, S.G.; Hunt, A.P. (eds.).
391:. The formation is exposed along the
16:Geologic formation in New Mexico, US
13:
675:Lucas, S.G.; Hayden, S.N. (1991).
327:Anton Chico Formation (New Mexico)
14:
820:
809:Triassic formations of New Mexico
402:The formation is overlain by the
735:Lucas, S.G.; Hunt, A.P. (1989).
703:Lucas, S.G.; Hunt, A.P. (1987).
567:Nesbitt, Lucas & Schoch 2006
318:
311:
290:
283:
37:
612:
479:and the primitive poposauroid
370:
1:
506:
449:fossils, possibly related to
302:Show map of the United States
555:Boy, Schoch & Lucas 2001
7:
770:10.1127/0077-7749/2009/0030
10:
825:
792:10.1127/njgpa/239/2006/289
413:
353:that was deposited in the
277:
269:
261:
251:
246:
236:
226:
187:
182:
168:
158:
153:
145:
135:
125:
115:
103:
28:
23:
490:History of investigation
422:based on the finding of
603:Lucas & Hayden 1991
256:Anton Chico, New Mexico
455:, and an unidentified
397:Santa Rosa, New Mexico
330:Show map of New Mexico
647:Lehman, T.M. (1994).
540:Lucas & Hunt 1989
525:Lucas & Hunt 1987
343:Anton Chico Formation
24:Anton Chico Formation
404:Santa Rosa Formation
211:35.2078°N 105.1431°W
149:102 feet (31 m)
130:Santa Rosa Formation
207: /
30:Stratigraphic range
684:New Mexico Geology
579:Schoch et al. 2010
452:Stanocephalosaurus
420:Moenkopi Formation
216:35.2078; -105.1431
447:paracyclotosaurid
379:with minor silty
339:
338:
816:
795:
773:
752:
750:
748:
731:
729:
727:
699:
697:
695:
681:
671:
669:
667:
653:
643:
641:
639:
625:
606:
600:
594:
588:
582:
576:
570:
564:
558:
552:
543:
537:
528:
522:
501:Bernal Formation
496:Spencer G. Lucas
406:and lies on the
395:as far south as
331:
322:
321:
315:
303:
294:
293:
287:
222:
221:
219:
218:
217:
212:
208:
205:
204:
203:
200:
108:
99:
36:
21:
20:
824:
823:
819:
818:
817:
815:
814:
813:
799:
798:
746:
744:
725:
723:
693:
691:
679:
665:
663:
651:
637:
635:
623:
615:
610:
609:
601:
597:
589:
585:
577:
573:
565:
561:
553:
546:
538:
531:
523:
514:
509:
492:
473:prolacertiforms
439:actinopterygian
425:Eocyclotosaurus
416:
373:
362:middle Triassic
335:
334:
333:
332:
329:
328:
325:
324:
323:
306:
305:
304:
301:
300:
297:
296:
295:
215:
213:
209:
206:
201:
198:
196:
194:
193:
111:
98:
97:
92:
87:
82:
77:
72:
67:
62:
57:
52:
47:
42:
34:
33:
17:
12:
11:
5:
822:
812:
811:
797:
796:
786:(2): 289–311.
774:
764:(3): 345–369.
753:
732:
700:
672:
644:
614:
611:
608:
607:
595:
583:
571:
559:
544:
529:
511:
510:
508:
505:
491:
488:
461:erythrosuchids
437:and traces of
415:
412:
372:
369:
345:is a geologic
337:
336:
326:
317:
316:
310:
309:
308:
307:
298:
289:
288:
282:
281:
280:
279:
278:
275:
274:
271:
267:
266:
265:Lucas and Hunt
263:
259:
258:
253:
249:
248:
244:
243:
238:
234:
233:
228:
224:
223:
191:
185:
184:
180:
179:
170:
166:
165:
160:
156:
155:
151:
150:
147:
143:
142:
137:
133:
132:
127:
123:
122:
117:
113:
112:
109:
101:
100:
93:
88:
83:
78:
73:
68:
63:
58:
53:
48:
43:
38:
26:
25:
15:
9:
6:
4:
3:
2:
821:
810:
807:
806:
804:
793:
789:
785:
781:
775:
771:
767:
763:
759:
754:
747:September 17,
742:
738:
733:
726:September 17,
722:
718:
714:
710:
706:
701:
689:
685:
678:
673:
661:
657:
650:
645:
638:September 17,
633:
629:
622:
617:
616:
604:
599:
592:
587:
580:
575:
568:
563:
556:
551:
549:
541:
536:
534:
526:
521:
519:
517:
512:
504:
502:
497:
487:
485:
483:
482:Arizonasaurus
478:
474:
470:
466:
462:
458:
457:capitosauroid
454:
453:
448:
444:
440:
436:
435:
431:
427:
426:
421:
411:
409:
408:Artesia Group
405:
400:
398:
394:
390:
386:
382:
378:
368:
366:
363:
359:
356:
352:
348:
344:
314:
286:
276:
272:
268:
264:
260:
257:
254:
250:
245:
242:
241:United States
239:
235:
232:
229:
225:
220:
192:
190:
186:
181:
178:
174:
171:
167:
164:
161:
157:
152:
148:
144:
141:
140:Artesia Group
138:
134:
131:
128:
124:
121:
118:
114:
107:
102:
96:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
41:
31:
27:
22:
19:
783:
779:
761:
757:
745:. Retrieved
740:
724:. Retrieved
715:(1): 21–33.
712:
708:
692:. Retrieved
687:
683:
666:September 1,
664:. Retrieved
659:
655:
636:. Retrieved
631:
627:
613:Bibliography
598:
586:
574:
562:
493:
480:
469:rauisuchians
450:
434:Isopodichnus
432:
430:trace fossil
423:
417:
401:
389:type section
385:conglomerate
374:
342:
340:
270:Year defined
247:Type section
177:Conglomerate
18:
694:November 3,
591:Lehman 1994
393:Pecos River
371:Description
349:exposed in
214: /
202:105°08′35″W
189:Coordinates
507:References
465:archosaurs
443:coprolites
351:New Mexico
231:New Mexico
199:35°12′28″N
690:(1): 9–15
634:: 103–109
477:archosaur
377:sandstone
347:formation
252:Named for
163:Sandstone
154:Lithology
146:Thickness
126:Underlies
120:Formation
803:Category
721:40024381
484:babbitti
463:, other
441:fish in
381:mudstone
262:Named by
183:Location
173:Mudstone
136:Overlies
662:: 37–51
414:Fossils
360:of the
355:Anisian
237:Country
159:Primary
35:Anisian
719:
471:, and
365:Period
227:Region
717:JSTOR
680:(PDF)
652:(PDF)
624:(PDF)
169:Other
749:2020
728:2020
696:2021
668:2020
640:2020
383:and
341:The
273:1987
116:Type
40:PreꞒ
788:doi
784:239
766:doi
762:255
660:150
358:Age
805::
782:.
760:.
713:22
711:.
707:.
688:13
686:.
682:.
658:.
654:.
632:52
630:.
626:.
547:^
532:^
515:^
486:.
467:,
410:.
399:.
367:.
175:,
90:Pg
32::
794:.
790::
772:.
768::
751:.
730:.
698:.
670:.
642:.
605:.
593:.
581:.
569:.
557:.
542:.
527:.
95:N
85:K
80:J
75:T
70:P
65:C
60:D
55:S
50:O
45:Ꞓ
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.