115:
393:
342:
317:
324:
1046:
966:
499:. Varela (2014) recognized three informal sections (lower, middle, and upper) on the bases of sedimentological and sequence stratigraphic analysis. The lower section consists of fine-grained intervals with paleosols interbedded with laminated shale and coquina, representing coastal plain and lagoon paleoenvironments.
532:
features and paleosol-derived climatic proxies suggest a subtropical temperate-warm, at 12 ± 2.1 °C (53.6 ± 3.8 °F) and humid, with 1,404 ± 108 millimetres (55.3 ± 4.3 in)/yr, climate with marked rainfall seasonality during the deposition of this
1108:
F. J. Goin, D. G. Poire, M. S. De Fuente, A. L. Cione, F. E. Novas, E. S. Bellosi, A. Ambrosio, O. Ferrer, N. D. Canessa, A. Carloni, J. Ferigolo, A. M. Ribeiro, M. S. Sales Viana, M. A. Reguero, M. G. Vucetich, S. Marenssi, M. F. Lima Filho and S. Agostinho. 2002. Paleontologia y geologia de los
422:
The
Austral (or Magallanes) Basin, is located on the southwestern end of the South American Plate and it is bordered to the south by the Scotia Plate covering an area of approximately 230.000 square kilometres (88.803 sq mi). In the studied area, the Austral Basin underwent three main
1097:
J. F. Petrulevicius, A. N. Varela, A. Iglesias, A. B. Zamuner, and D. G. Poiré. 2014. First
Cenomanian record of insects in the southern Hemisphere, with Perforissidae (Fulgoroidea) and Cupedidae (Coleoptera) from southern Patagonia, Argentina. Cretaceous Research
1104:
A. Iglesias, A. B. Zamuner, D. G. Poiré and F. Larriestra. 2007. Diversity, taphonomy, and palaeoecology of an angiosperm flora from the
Cretaceous (Cenomanian-Coniacian) in southern Patagonia, Argentina. Palaeontology
486:
The foreland stage, in response to the regional change from extensive to compressive regime, resulted in the deposition of the continental Mata
Amarilla Formation. This unit is mainly composed of grey and blackish
1180:
1122:. 1899. Nota preliminar sobre el Loncasaurus argentinus un representante de la familia de los Megalosauridae en la República Argentina . Anales de la Sociedad Científica Argentina 47:61-62
392:
1109:
sedimentos del cretacico superior aflorantes al sur del rio shehuen (Mata
Amarilla, Provincia de Santa Cruz, Argentina). Actas del XV Congreso Geologico Argentino, El Calafate, 2002 1–6
114:
1101:
J. P. O'Gorman and A. N. Varela. 2010. The oldest lower Upper
Cretaceous plesiosaurs (Reptilia, Sauropterygia) from Southern Patagonia, Argentina. Ameghiniana 47(4):447-459
1190:
1140:
1017:"U-Pb zircon constraints on the age of the Cretaceous Mata Amarilla Formation, Southern Patagonia, Argentina: Its relationship with the evolution of the Austral Basin"
1016:
872:
Martin, T.; Goin, F. J.; Schultz, J. A.; Gelfo, J. N. (2021). "Early Late
Cretaceous mammals from southern Patagonia (Santa Cruz province, Argentina)".
1135:
341:
316:
1115:
J. Frenguelli. 1953. La Flora Fósil de la región del Alto Río Chalia en Santa Cruz (Patagonia). Paleontología. Notas del museo XVI(98):239-257
354:
1175:
1185:
1112:
M. B. Aguirre Urreta. 1989. The
Cretaceous decapod Crustacea of Argentina and the Antarctic Peninsula. Palaeontology 32(3):499-552
286:
906:
1195:
1165:
1155:
1145:
941:
1058:"An abelisauroid dinosaur with a non-atrophied manus from the Late Cretaceous Pari Aike Formation of southern Patagonia"
251:
212:
205:
1160:
1150:
1170:
480:
156:
775:
454:
438:
were formed and filled with volcaniclastic and volcanic rocks intercalated with epiclastic sediments of the
398:
979:"A reappraisal of a putative record of abelisauroid theropod dinosaur from the Middle Jurassic of England"
464:
439:
146:
476:
526:
deposits. The upper section is dominated by fine-grained deposits, related to distal fluvial channels.
443:
373:, dated to 96.94 to 95.52 Ma. The middle section of the formation was previously considered to be the
990:
698:
410:
in age, but recent dating of a lava tuff layer shows that it dates back to 96.2 ± 0.7 Ma, during the
128:
1015:
Varela, A.N.; Poiré, D. G.; Martin, T.; Gerdes, A.; Goin, F. J.; Gelfo, J. N.; Hoffmann, S. (2012),
754:
747:
1119:
740:
684:
374:
796:
889:
677:
670:
450:
782:
423:
tectonic stages: (i) a rift stage; (ii) a thermal subsidence stage; and (iii) a foreland stage.
817:
640:
533:
unit (Varela et al. 2012b; 2018), in accordance with previous paleobotanical interpretations.
1074:
1030:
998:
950:
881:
358:
304:
719:
511:
935:
Santamarina, Patricio E.; Barreda, Viviana D.; Iglesias, Ari; Varela, Augusto N. (2018),
1057:
994:
1021:
705:
658:
582:
515:
244:
1129:
978:
893:
407:
66:
24:
936:
885:
1002:
937:"Salvinialean megaspores in the Late Cretaceous of southern Patagonia, Argentina"
910:
810:
607:
435:
41:
1050:
970:
1078:
803:
523:
519:
411:
406:
The middle section of the Mata
Amarilla Formation has widely been regarded as
380:
The Mata
Amarilla Formation has provided many fossil vertebrates, among which
370:
86:
51:
28:
266:
253:
227:
214:
1034:
761:
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664:
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185:
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171:
91:
35:
954:
789:
653:
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529:
468:
427:
396:
Paleogeography of the Late Cretaceous (90 Ma) with known distribution of
381:
193:
81:
76:
61:
56:
46:
1065:
1045:
965:
96:
71:
495:, alternating with whitish and yellowish-grey fine to medium grained
457:
431:
384:, fish and turtles, as well as fossil insects, flora and molluscs.
391:
969:
Material was copied from this source, which is available under a
483:
was deposited, representing a large passive-margin delta system.
472:
189:
340:
369:. The formation consists of sediments deposited during the
545:
1051:
Creative Commons Attribution 4.0 International License
971:
Creative Commons Attribution 4.0 International License
300:
292:
282:
243:
204:
199:
181:
167:
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142:
134:
124:
18:
1181:Fossiliferous stratigraphic units of South America
1056:Ezcurra, M.D.; Agnolin, F.L.; Novas, F.E. (2010),
426:The rifting stage is related to the break-up of
323:
119:Map of Mata Amarilla and surrounding formations
867:
865:
863:
861:
8:
983:Proceedings of the Geologists' Association
113:
15:
1191:Geology of Santa Cruz Province, Argentina
518:deposits, intercalated with fine-grained
1141:Upper Cretaceous Series of South America
548:
453:stage resulted in the deposition of the
830:
720:Polyptychoceras (Polyptychoceras) sp.
479:. Towards the end of this stage, the
7:
331:Mata Amarilla Formation (Argentina)
14:
1136:Geologic formations of Argentina
1044:
964:
322:
315:
922:Santamarina et al., 2018, p.610
855:Santamarina et al., 2018, p.609
846:Santamarina et al., 2018, p.608
706:Anagaudryceras cf. politissimum
138:Upper, Middle and Lower members
1:
942:Acta Palaeontologica Polonica
886:10.1016/j.cretres.2021.105127
502:The middle section comprises
1003:10.1016/j.pgeola.2012.05.008
245:Approximate paleocoordinates
1176:Austral or Magallanes Basin
1212:
1186:Paleontology in Argentina
1079:10.11646/zootaxa.2450.1.1
310:
112:
23:
685:Treslagosodon shehuensis
678:Amarillodon meridionalis
510:representing meandering
481:Piedra Clavada Formation
157:Piedra Clavada Formation
1035:10.5027/andgeoV39n3-a01
741:Aonikenkissus zamunerae
355:fossiliferous formation
351:Mata Amarilla Formation
19:Mata Amarilla Formation
977:Rauhut, O.W.M (2012),
955:10.4202/app.00491.2018
776:Arcellites disciformis
567:Stratigraphic position
403:
399:Arcellites disciformis
346:
659:Elasmosauridae indet.
395:
344:
1196:Geology of Patagonia
1166:Siltstone formations
1156:Sandstone formations
1146:Cretaceous Argentina
783:Bignonites chalianus
465:Springhill Formation
345:Stratigraphic column
147:Alta Vista Formation
129:Geological Formation
995:2012PrGA..123..779R
874:Cretaceous Research
837:Varela et al., 2012
797:Laurophyllum kurtzi
713:Baculites cf. kirki
477:Río Mayer Formation
444:Tobífera Formations
375:Pari Aike Formation
287:Santa Cruz Province
263: /
224: /
25:Stratigraphic range
1049:available under a
790:Fitzroya tertiaria
671:Ausktribosphenidae
641:Ceratodus iheringi
451:thermal subsidence
449:Subsequently, the
404:
347:
804:?Schinopsis dubia
755:M. santacruzensis
748:Myrcia acutifolia
727:cf. Potamides sp.
634:Other vertebrates
630:
629:
371:Middle Cenomanian
339:
338:
34:96.94–95.52
1203:
1161:Shale formations
1151:Cenomanian Stage
1087:
1086:
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914:
904:
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835:
546:
522:and subordinate
512:fluvial channels
467:, and the black
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117:
108:
38:
16:
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1171:Tuff formations
1126:
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1092:Further reading
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1039:
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1007:
1005:
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959:
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934:
931:
926:
921:
917:
905:
901:
871:
870:
859:
854:
850:
845:
841:
836:
832:
828:
823:
811:Equisetites sp.
771:
736:
699:Glyphea oculata
694:
654:Chelidae indet.
636:
620:Middle Section
595:Middle Section
544:
539:
420:
390:
335:
334:
333:
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329:
328:
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271:
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1102:
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1089:
1088:
1053:
1029:(3): 359–379,
1022:Andean Geology
1012:
989:(5): 779–786,
974:
930:
927:
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899:
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848:
839:
829:
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623:
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583:Clasmodosaurus
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562:
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554:
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537:Fossil content
535:
516:crevasse splay
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416:
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100:
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55:
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29:Mid Cenomanian
21:
20:
13:
10:
9:
6:
4:
3:
2:
1208:
1197:
1194:
1192:
1189:
1187:
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1177:
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1105:50(2):445-466
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988:
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928:
919:
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895:
891:
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883:
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875:
868:
866:
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849:
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834:
831:
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819:
815:
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799:
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792:
791:
787:
785:
784:
780:
778:
777:
773:
772:
768:
764:
763:
762:Zygadenia sp.
759:
757:
756:
752:
750:
749:
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743:
742:
738:
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733:
729:
728:
724:
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682:
680:
679:
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672:
669:
666:
662:
660:
657:
655:
652:
650:
649:
648:Lepidotes sp.
645:
643:
642:
638:
637:
633:
626:
624:
622:
619:
617:
615:
614:L. argentinus
612:
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500:
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482:
478:
474:
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459:
456:
455:transgressive
452:
447:
445:
441:
437:
433:
429:
424:
417:
415:
413:
409:
408:Maastrichtian
401:
400:
394:
387:
385:
383:
378:
376:
372:
368:
364:
360:
359:Austral Basin
356:
352:
343:
318:
309:
306:
305:Austral Basin
303:
299:
295:
291:
288:
285:
281:
276:
267:56.5°S 48.8°W
248:
246:
242:
237:
228:49.5°S 71.5°W
209:
207:
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83:
78:
73:
68:
63:
58:
53:
48:
43:
37:
30:
26:
22:
17:
1082:, retrieved
1070:
1064:
1038:, retrieved
1026:
1020:
1006:, retrieved
986:
982:
958:, retrieved
946:
940:
929:Bibliography
918:
907:Cerro Waring
902:
877:
873:
851:
842:
833:
818:Phylites sp.
816:
809:
802:
795:
788:
781:
774:
760:
753:
746:
739:
725:
718:
711:
704:
697:
683:
676:
646:
639:
613:
606:
588:
581:
549:
528:
501:
485:
448:
436:half-grabens
425:
421:
405:
397:
379:
361:in southern
350:
348:
272:-56.5; -48.8
233:-49.5; -71.5
949:: 607–616,
911:Fossilworks
608:Loncosaurus
520:floodplains
418:Description
270: /
231: /
206:Coordinates
1130:Categories
1098:51:174-185
1084:2019-10-13
1040:2019-10-13
1008:2019-10-13
960:2019-10-13
880:: 105127.
826:References
589:C. spatula
524:lacustrine
440:El Quemado
412:Cenomanian
894:245549530
665:Docodonta
551:Dinosaurs
542:Dinosaurs
508:siltstone
504:sandstone
497:sandstone
493:claystone
489:siltstone
461:sandstone
458:quartzose
402:indicated
382:dinosaurs
367:Argentina
363:Patagonia
296:Argentina
194:paleosols
186:Sandstone
176:claystone
172:Siltstone
163:Lithology
143:Underlies
135:Sub-units
1120:Ameghino
1073:: 1–25,
692:Molluscs
570:Material
564:Location
530:Paleosol
469:mudstone
428:Gondwana
200:Location
153:Overlies
1066:Zootaxa
991:Bibcode
734:Insects
576:Images
561:Species
475:of the
463:of the
432:grabens
357:of the
293:Country
258:48°48′W
255:56°30′S
219:71°30′W
216:49°30′S
168:Primary
103:↓
892:
673:indet.
667:indet.
301:Extent
283:Region
1061:(PDF)
890:S2CID
769:Flora
573:Notes
558:Genus
353:is a
182:Other
1071:2450
913:.org
514:and
506:and
491:and
473:marl
471:and
442:and
434:and
349:The
190:tuff
125:Type
42:PreꞒ
1118:F.
1075:doi
1031:doi
999:doi
987:123
951:doi
909:at
882:doi
878:133
388:Age
1132::
1069:,
1063:,
1027:39
1025:,
1019:,
997:,
985:,
981:,
947:63
945:,
939:,
888:.
876:.
860:^
446:.
430:,
414:.
377:.
365:,
192:,
188:,
174:,
92:Pg
36:Ma
27::
1077::
1033::
1001::
993::
973:.
953::
896:.
884::
663:?
97:N
87:K
82:J
77:T
72:P
67:C
62:D
57:S
52:O
47:Ꞓ
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
