Midway Group

Geology

Formations: unnamed (38), Anacacho Limestone (1), Clayton (80), Clayton Limestone (1), Fort Gaines (1), Halls Summit (3), Kincaid (188), Logansport (12), Naheola (10), Nanafalia (4), Navarro (1), Poerters Creek (1), Porters Creek (64), Shark River (1), Sucarnochee Clay (2), Wills Point (104)

Lithologies: not reported (312), "siliciclastic" (9), claystone (70), mudstone (5), "shale" (2), siltstone (8), sandstone (42), conglomerate (1), "mixed carbonate-siliciclastic" (2), marl (31), packstone (7), grainstone (1), "limestone" (28), "carbonate" (5)

Paleoenvironments: marine indet. (281), carbonate indet. (13), shallow subtidal indet. (113), open shallow subtidal (1), platform/shelf-margin reef (1), deep subtidal ramp (6), deep subtidal shelf (4), deep subtidal indet. (13), offshore indet. (1), marginal marine indet. (13), coastal indet. (44), estuary/bay (1), shoreface (3), transition zone/lower shoreface (2), offshore (15)

Age range: base of the Early/Lower Campanian to the top of the Lutetian or 83.60000 to 41.03000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Early/Lower Campanian - Middle Campanian83.6 - 72.2USA (Texas) (3613)
Maastrichtian72.2 - 66.0USA (Texas) (191400)
Danian66.0 - 61.66USA (South Carolina) (91763 91766 99089 99094)
Danian66.0 - 61.66USA (Arkansas) (91870 91871 91872 91874 98520 99173 99174 99176 142841 142842 206776)
Danian66.0 - 61.66USA (Alabama) (80972 80976 81870 81890 83261 83292 83293 83295 83297 86390 86391 86395 86396 86397 90604 90612 90613 91112 91852 98391 98392 98393 98395 98410 98413 98424 98428 98430 98435 122851 155914 155920 155921 155922 155923 155924 164850 168383 168384 226575)
Danian66.0 - 61.66USA (Mississippi) (80969 80970 80971 87134 91730 91732 91733 98516 98518 98522 98524 98527)
Danian66.0 - 61.66USA (Tennessee) (90675 91767 91768 91769 91770 91896 91897 98666 98669 98670)
Danian66.0 - 61.66USA (Georgia) (90641 91051 92153 92176 92262 92264 98659 155911)
Danian66.0 - 61.66USA (Texas) (79216 80968 81884 81886 81887 81888 91774 91776 91778 91791 91800 91801 91802 91803 91811 91812 91813 91818 91819 91820 91821 91822 91823 91824 91826 91832 91833 91849 91850 91854 91855 91893 92216 92221 92222 92223 92224 92245 92246 98701 98794 98803 98804 98820 98821 98822 98823 98825 98829 98830 98861 98862 98877 98880 98992 98993 98994 98995 98997 98998 98999 99000 99001 99002 99004 99005 99006 99008 99009 99010 99011 99012 99013 99014 99015 99016 99049 99052 99053 99054 99055 108439 108440 108441 108442 108443 108444 108445 108727 108728 108729 108730 108732 108733 108734 108735 108737 108738 108739 108740 108741 108767 108780 109125 109455 109456 109457 109503 109504 109520 109521 109589 109596 109599 109601 109613 122545 122546 122602 122608 122609 122610 122611 122612 122613 122614 122615 122616 122617 122618 122647 122648 122649 122650 122651 134952 135773 165997 190657 190658 190671 191232 191248 191249 191250 191363 205220 205221 205260 205261 205262 205464 205466 205467 205474 205493 207141)
Early/Lower Paleocene66.0 - 61.66USA (Texas) (86341 86344 86392 86393 86399 86402 86405 86406 86408 86410 86412 86414 86415 86416 86417 86419 86425 86429 86430 86434 86437 86440 86442 86449 86451 86452 86455 86456 86457 86458 86459 86460 86463 86464 86465 86466 86467 86471 86472 86473 86474 86475)
Early/Lower Paleocene66.0 - 61.66USA (Georgia) (74548)
Early/Lower Paleocene66.0 - 61.66USA (Alabama) (81889 81891 155910)
Danian - Selandian66.0 - 59.24USA (South Carolina) (99091 99092)
Danian - Selandian66.0 - 59.24USA (Alabama) (35081 80975 86398 90601 90611 90614 91851 92037 92038 92039 92040 92041 98412 98427 98431 98433 122045)
Danian - Selandian66.0 - 59.24USA (Arkansas) (99175 99177 99178)
Danian - Selandian66.0 - 59.24USA (Tennessee) (98662 98663 98664 98665 98667 98668)
Danian - Selandian66.0 - 59.24USA (Mississippi) (98519 98528)
Danian - Selandian66.0 - 59.24USA (Georgia) (91884 98637 98638)
Danian - Selandian66.0 - 59.24USA (Louisiana) (92158 98775 98780 98924)
Danian - Selandian66.0 - 59.24USA (North Carolina) (99440)
Danian - Selandian66.0 - 59.24USA (Texas) (91129 91775 91779 91807 91825 91842 92205 98704 98707 98708 98711 98727 98732 98733 98734 98735 98739 98740 98741 98743 98793 98795 98828 98857 98860 98881 98991 99003 99017 99021 99056 99071 108435 108436 108437 108438 108731 108736 108768 109059 109127 109129 109130 109458 109588 109592 109600 166085 191364 191450)
Early/Lower Paleocene - Middle Paleocene66.0 - 59.24USA (Texas) (86237 86270 86281 86283 86287 86288 86289 86290 86291 86292 86293 86294 86304 86307 86308 86309 86310 86311 86312 86313 86314 86315 86328 86329 86342 86343 86389 86400 86403 86404 86411 86413 86418 86421 86422 86427 86431 86432 86433 86435 86436 86438 86441 86461 86462 86468 86469 86470 86476 86477)
Early/Lower Paleocene - Middle Paleocene66.0 - 59.24USA (Georgia) (91108 98660 98661)
Early/Lower Paleocene - Middle Paleocene66.0 - 59.24USA (Alabama) (86394)
Danian - Thanetian66.0 - 56.0USA (New Jersey) (101331)
Danian - Thanetian66.0 - 56.0USA (Louisiana) (52190 52191 52192 52193 52194 52195 52196 52197 52198 52199 99713)
Paleocene66.0 - 56.0USA (Alabama) (80967 87802 87815 87816 142886 142896 191556)
Paleocene66.0 - 56.0USA (Texas) (80973 142885)
Paleocene66.0 - 56.0USA (Arkansas) (80974)
Selandian61.66 - 59.24USA (Arkansas) (91873)
Selandian61.66 - 59.24USA (Georgia) (92156 92371 98639)
Selandian61.66 - 59.24USA (Alabama) (85066 86172 86173 86174 86175 86180 86181 86182 86184 86186 86259 86262 87817 89867 89947 90605 90606 90607 90608 91853 92602 92604 98262 98384 98417 98418 98421 98422 98423 98426 98429 98432 98434 98436 98437 153343 153344 205452 205499 205525)
Selandian61.66 - 59.24USA (Mississippi) (92376 98521 98523)
Selandian61.66 - 59.24USA (Texas) (135159 191399 226943)
Selandian - Thanetian61.66 - 56.0USA (Georgia) (91885 98631)
Selandian - Thanetian61.66 - 56.0USA (Alabama) (80286 155917)
Thanetian59.24 - 56.0USA (Alabama) (142748 142749)
Early/Lower Eocene56.0 - 48.07USA (Texas) (83826)
Lutetian48.07 - 41.03USA (Texas) (205263)