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40:
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traces. The beds range in thickness, up to over 100 feet in depth in some areas (such as at White Cliffs)., but thins to the east and is only a few feet thick north of
Columbus, Arkansas and is completely missing to the east. The break between the Annona Formation and the
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appears to be sharp with a few tubular borings up to a foot long extending down from the Annona in to the Ozan.
1091:
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267:
271:
150:
988:, Norman L. Thomas and Elmer M. Rice, Journal of Paleontology, Vol. 6, No. 4 (Dec., 1932), pp. 319–329
39:
888:
Kennedy, W. J.; Cobban, W. A. (1993). "Campanian ammonites from the Annona Chalk near Yancy, Arkansas".
665:
766:
Hill, R.T. (1894). "Geology of parts of Texas, Indian
Territory and Arkansas adjacent to Red River".
581:
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469:
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174:
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437:
397:
958:
Stratigraphy and
Ostracoda of the Ozan, Annona, and Marlbrook Formations of southwestern Arkansas
485:
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628:
208:. It weathers white, but is blue-gray when freshly exposed. The unit is commercially mined for
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Geology and
Underground Water Resources of Northern Louisiana and Southern Arkansas
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204:. The formation is a hard, thick-bedded to massive, slightly fossiliferous
960:(PhD). Louisiana State University and Agricultural and Mechanical College.
508:
309:
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121:
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at what is now called White Cliffs
Natural Area, with the
808:. Arkansas Geological Survey. p. 308. Archived from
1079:
1019:
742:
List of fossiliferous stratigraphic units in
Arkansas
883:
881:
849:
Upper
Cretaceous Formations of Southwestern Arkansas
972:"Fossilworks: Gateway to the Paleobiology Database"
970:Various Contributors to the Paleobiology Database.
879:
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142:
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1135:Southern United States geologic formation stubs
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768:Bulletin of the Geological Society of America
8:
286:Another view of the same location (c. 1902)
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38:
18:
16:Geological formation in the United States
758:
298:Quarry at Whitecliffs Landing (c. 1902)
252:
212:. Fossils in the Annona Chalk include
956:Collins, Jr., Robert J. (June 1960).
7:
1057:
1055:
997:
995:
1078:. You can help Knowledge (XXG) by
1018:. You can help Knowledge (XXG) by
837:. U.S. Government Printing Office.
14:
1059:
999:
831:Veatch, Arthur Clifford (1906).
726:
380:N. (Nostoceras) monotuberculatum
291:
279:
255:
1007:This article about a specific
1:
385:N. (Nostoceras) plerucostatum
1067:This article related to the
1130:Cretaceous geology of Texas
1161:
1054:
994:
853:Arkansas Geological Survey
806:Arkansas Geological Survey
986:Notes on the Annona Chalk
37:
26:
1140:Arkansas geography stubs
802:"Annona Chalk Formation"
787:, Annona Chalk/Formation
747:Paleontology in Arkansas
890:Journal of Paleontology
390:N. (Nostoceras) pulcher
262:Annona Chalk overlying
375:N. (Nostoceras) danei
1125:Cretaceous Arkansas
734:Paleontology portal
270:in the foreground,
197:dating back to the
28:Stratigraphic range
175:geologic formation
162:Robert Thomas Hill
1087:
1086:
1027:
1026:
1014:in Arkansas is a
537:C. paraustinensis
167:
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1145:Cretaceous stubs
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666:Orthonotacythere
600:H. micropunctata
346:Didymoceratoides
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151:Red River County
44:Outcrop east of
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812:on May 27, 2010
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582:Haplocytheridea
558:C. tollettensis
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193:. It preserves
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545:Cytherelloidea
540:
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331:B. taylorensis
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264:Ozan Formation
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1009:stratigraphic
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689:Phacorhabdots
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566:Cytheropteron
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470:Brachycythere
467:
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454:Bairdoppilata
451:
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421:Placenticeras
418:
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272:Howard County
269:
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214:coelenterates
211:
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132:United States
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25:
20:
1080:expanding it
1066:
1020:expanding it
1006:
991:
975:. Retrieved
957:
893:
889:
847:Dane, 1929,
843:
833:
826:
814:. Retrieved
810:the original
805:
792:
780:
771:
767:
761:
712:
703:
696:
687:
680:
673:
664:
657:
652:
645:Monoceratina
643:
637:L. fletcheri
636:
627:
620:
611:
604:
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564:
557:
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532:C. filicosta
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477:
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438:Alatacythere
436:
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405:
398:Oxybeloceras
396:
389:
384:
379:
374:
365:
358:
354:D. binodosum
353:
344:
337:
330:
326:B. crickmayi
325:
316:
268:Little River
171:Annona Chalk
170:
168:
138:Type section
67:Austin Group
22:Annona Chalk
977:17 December
896:(1): 83–97.
785:USGS Geolex
653:M. montuosa
621:K. cushmani
605:H. plummeri
527:C. communis
494:B. windhami
486:Bythocypris
414:Pachydiscus
339:Didymoceras
236:, and some
234:cephalopods
218:echinoderms
58:Sedimentary
46:Clarksville
1119:Categories
1069:Cretaceous
855:Bulletin 1
798:R. T. Hill
753:References
713:V. ozanana
697:P. texanus
682:Paracypris
629:Loxoconcha
595:H. globosa
522:C. caudata
462:B. rotunda
406:O. crassum
367:Nostoceras
359:D. clardyi
304:Paleofauna
238:vertebrate
230:gastropods
199:Cretaceous
32:Cretaceous
1012:formation
674:O. hannai
658:M. pedata
574:C. blakei
553:C. crafti
429:Ostracods
318:Baculites
310:Ammonites
249:Exposures
187:Louisiana
143:Named for
100:Lithology
95:30 Meters
92:Thickness
72:Underlies
64:Sub-units
720:See also
509:Cytheris
478:B. ovata
226:bivalves
222:annelids
191:Oklahoma
179:Arkansas
158:Named by
122:Arkansas
113:Location
82:Overlies
502:Cythere
195:fossils
153:, Texas
128:Country
105:Primary
1072:period
816:25 May
774:: 308.
705:Veenia
613:Krithe
210:cement
202:period
189:, and
147:Annona
118:Region
1074:is a
206:chalk
183:Texas
173:is a
108:Chalk
1076:stub
1016:stub
979:2021
818:2015
169:The
54:Type
177:in
1121::
902:^
894:67
892:.
860:^
851:,
804:.
800:.
770:.
232:,
228:,
224:,
220:,
216:,
185:,
181:,
149:,
30::
1107:e
1100:t
1093:v
1082:.
1047:e
1040:t
1033:v
1022:.
981:.
820:.
772:5
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