Rich Member, Group

Geology

Formation: Twin Creek Limestone

Formations: Merzâ- Akhsaï (1)

Lithologies: not reported (46), "siliciclastic" (2), claystone (3), mudstone (18), "shale" (22), siltstone (6), sandstone (11), conglomerate (2), marl (2), lime mudstone (25), chalk (45), packstone (19), grainstone (5), "limestone" (101), dolomite (6), "carbonate" (1), chert (2)

Paleoenvironments: marine indet. (275), terrestrial indet. (2), carbonate indet. (79), shallow subtidal indet. (16), open shallow subtidal (15), reef, buildup or bioherm (5), deep subtidal indet. (5), offshore ramp (1), offshore shelf (3), basinal (siliceous) (4), marginal marine indet. (1), coastal indet. (6), shoreface (6), transition zone/lower shoreface (8), offshore (2), submarine fan (1), deep-water indet. (2), fluvial indet. (1), coarse channel fill (1), dry floodplain (1), lacustrine indet. (2)

Age range: base of the Middle Cambrian to the top of the Serravallian or 509.00000 to 11.62000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Middle Cambrian509.0 - 497.0India (113771 114633 114634 114635)
Jeffersonian485.4 - 470.0USA (Missouri) (56503 56504 56505 56506 56507 210300)
Late/Upper Ordovician458.4 - 443.8USA (Kentucky) (75153 75154 75167 76176 76177 76178 76179 76182 76188 76190 76218 76225 76229 76232 76239 76243 76245)
Late/Upper Ordovician458.4 - 443.8USA (Ohio) (75106 75108 75156 75158 75159 75160 75168 75462 76238 76252 76254 76255 76256 77500 77501 77502 77504 77506 77507 77509 77511 77512 77540 77545 77546 77547 77553 77560 77567 77571 77576 77822 77830 77833 77893 77967 77969 77970 77971 78116 78117 78146 78154 78155 78157 78158 78159 78160 78191 78222 78227 78228 78229 78295 78296 78298 78299 78360 78389 78390 78392 78393 78506 78507 78508 78603 78604 78606 78634 78635 78636 78701 78702 78703 78724 78725 78726 78727 78728 78803 78806 78807 78821 78823 78824 78825 78826 78827 78828 78829 78883 78884 78887 78889 78892)
Late/Upper Ordovician458.4 - 443.8USA (Indiana) (75110 75161 75165 75166 76259 77497 77554 77636 77638 77639 77641 77642 77716 77719 77720 77722 77759 77895 77965 78115 78118 78151 78156 78361 78387 78388 78391 78505 78509 78601 78602 78607 78637 78820 78885 78888 78890 78891 78899)
Maysvillian450.2 - 449.6USA (Ohio) (194730)
Richmondian449.6 - 445.5USA (Michigan) (75972 173306)
Richmondian449.6 - 445.5USA (Ohio) (75112 75114 75115 77543 77544 78297 78639 78804 173010 173168)
Richmondian449.6 - 445.5USA (Wisconsin) (167556)
Richmondian449.6 - 445.5USA (Indiana) (75107 75109 76913 77643 77644 77717 77718 77835 77966 78893 78894 78896 100245 101552 155718 194134)
Richmondian449.6 - 445.5USA (Illinois) (167613 167615)
Ashgill449.5 - 443.7USA (Indiana, Ohio) (24171)
Ashgill449.5 - 443.7USA (Tennessee) (28024)
Ashgill449.5 - 443.7USA (Michigan) (26306 26308 26309 26310 26331)
Ashgill449.5 - 443.7USA (Kentucky, Indiana, Ohio) (28026)
Aeronian440.8 - 438.5Canada (Quebec) (5784 5785 113156 113289 158766 158768 158769)
Aeronian440.8 - 438.5Canada (Québec) (24418)
Aeronian - Telychian440.8 - 433.4Canada (Quebec) (184407 184408 184409 186046 186061 186064 186065 186066 186067 186068 186069 186070 186071 186088)
Telychian438.5 - 433.4Canada (Quebec) (202397)
Telychian438.5 - 433.4Australia (Tasmania) (40017)
Pridoli423.0 - 419.2Poland (West Pomerania) (89484)
Pridoli423.0 - 419.2Poland (89485)
Pridoli423.0 - 419.2Poland (Kuyavia-Pomerania) (89481)
Pridoli423.0 - 419.2Sweden (Dalarne) (164282)
Pridoli423.0 - 419.2Germany (Brandenburg) (89483)
Pridoli423.0 - 419.2Germany (Mecklenburg-Western Pomerania) (89482)
Lochkovian419.2 - 410.8Morocco (13935)
Early/Lower Emsian409.1 - 402.5Morocco (150580)
Asbian340.0 - 336.0Morocco (99683 99687 99688)
Noginskian301.2 - 300.1USA (Kansas) (11603 11608 11612 11613 11614 11615 11616)
Anisian247.2 - 242.0New Zealand (137809 137811 137812)
Illyrian247.2 - 242.0Italy (Trentino-Alto Adige) (196816)
Middle Triassic247.2 - 237.0Italy (202326)
Ladinian242.0 - 237.0USA (Oregon) (96068)
Carnian237.0 - 228.0USA (Oregon) (96067)
Norian228.0 - 208.5USA (Oregon) (96069 96114 96116 96131)
Otapirian205.6 - 201.6New Zealand (137867)
Late/Upper Bajocian171.6 - 167.7USA (Utah) (167190 167191 167193 167194 167195 167196 167198 167199 167200 167202 167204)
Late/Upper Bajocian171.6 - 167.7USA (Wyoming) (167179 167169 167170 167171 167172 167173 167174 167175 167176 167177 167178 167181 167183 167184 167185 167187 167188 167189)
Late/Upper Bajocian171.6 - 167.7USA (Idaho) (167162 167164 167165 167166 167167 167168)
Bajocian170.3 - 168.3USA (Wyoming) (36527)
Bajocian170.3 - 168.3USA (Utah) (167115)
Late/Upper Albian105.3 - 99.6Canada (British Columbia) (234729)
Late/Upper Albian - Early/Lower Cenomanian105.3 - 93.5Algeria (Adrar) (59578)
Senonian100.5 - 66.0India (155339)
Early/Lower Cenomanian99.6 - 93.5Canada (British Columbia) (234732)
Turonian - Santonian93.9 - 83.6India (Tamil Nadu) (189378)
Turonian - Santonian93.9 - 83.6India (Kerala) (178986)
Coniacian89.8 - 86.3India (Tamil Nadu) (46393 180663)
Coniacian - Santonian89.8 - 83.6India (Tamil Nadu) (166275)
Middle Coniacian89.3 - 85.8India (Tamil Nadu) (46503)
Late/Upper Campanian83.5 - 70.6USA (Colorado) (178349 178350 178351 178352)
Late/Upper Campanian - Early/Lower Maastrichtian83.5 - 66.0USA (Colorado) (90157 90160)
Maastrichtian72.1 - 66.0Belgium (121514)
Maastrichtian72.1 - 66.0Netherlands (Riemst) (138768)
Maastrichtian72.1 - 66.0Netherlands (1326)
Maastrichtian72.1 - 66.0Denmark (35039)
Maastrichtian72.1 - 66.0India (Tamil Nadu) (46463 46507)
Maastrichtian72.1 - 66.0Netherlands (Limburg) (165090)
Early/Lower Maastrichtian70.6 - 66.0India (228177 228178 228179)
Early/Lower Maastrichtian70.6 - 66.0India (Tamil Nadu) (68169)
Early/Lower Maastrichtian70.6 - 66.0Netherlands (82411 82923)
Early/Lower Maastrichtian70.6 - 66.0Belgium (82924)
Late/Upper Maastrichtian70.6 - 66.0Netherlands (3914 3915 32161 32177 32178 32179 62496 82491 82496 82925 90778 126157 126168 126552 126557 126558 133105 133114 138765 138767 138770 138910 219136 191838 191839 196775 196776 196822 196823 196831 196832 196833 196853 196875 196876 196989 196990 196991 214360 214361 214362 214545 222137 226633)
Late/Upper Maastrichtian70.6 - 66.0Belgium (Liege) (32154 32155 32156 32157 32174)
Late/Upper Maastrichtian70.6 - 66.0Belgium (Limburg) (51521 170081 196987)
Late/Upper Maastrichtian70.6 - 66.0Belgium (3909 82493 82926 97855 123177 123178 123179 123180 123181 138751 191837 196777 196778 196820 196821 196854 196855 196856 196877 214359)
Late/Upper Maastrichtian70.6 - 66.0Belgium (Liège) (48877 48878 67130 67131 67132 78714 84446 123516 143253 155974)
Late/Upper Maastrichtian70.6 - 66.0Netherlands (Limburg) (3907 3908 32167 32168 48876 55338 67134 67135 67136 67137 78712 85267 85268 85270 85271 85272 85273 85274 138726 142084 143252 143254 169045 170080)
Late/Upper Maastrichtian - Late/Upper Cretaceous70.6 - 66.0Belgium (Liege) (32175)
Late/Upper Maastrichtian - Maastrichtian70.6 - 66.0Netherlands (32162)
Late/Upper Maastrichtian - Danian70.6 - 61.6Netherlands (32160)
Late/Upper Maastrichtian - Danian70.6 - 61.6Netherlands (Limburg) (32166 32169)
Danian66.0 - 61.6Netherlands (Limburg) (85275)
Danian66.0 - 61.6Jamaica (226513)
Thanetian59.2 - 56.0United Kingdom (England) (23315)
Early/Lower Eocene55.8 - 48.6Jamaica (St. Mary Parish) (77032)
Middle Eocene47.8 - 37.71Jamaica (96452)
Barstovian16.3 - 12.5USA (Nevada) (27660)
Serravallian13.82 - 11.62Kenya (Central Nyanza) (21340)
Early/Lower Clarendonian12.5 - 9.4USA (Nevada) (27659)