{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T07:00:12Z","timestamp":1781161212131,"version":"3.54.1"},"reference-count":118,"publisher":"Society for Sedimentary Geology","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2011,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Interregional correlation of the marine zones of major cyclothems between North America and eastern Europe does not support assertions that a major stratigraphic gap exists between the traditional regional Desmoinesian and Missourian stages in North America. Such a gap was previously proposed to explain an abrupt change in megafloral assemblages in the northern Appalachian Basin and by extension across all of North America. Conodont-based correlation from the essentially complete low-shelf Midcontinent succession (distal from the highstand shoreline), through the mid-shelf Illinois Basin, to the high shelf of the Appalachian Basin (proximal to highstand shoreline) demonstrates that all major \u223c400\u00a0kyr cyclothem groupings in the Midcontinent are recognizable in the Illinois Basin. In the Appalachian Basin, however, the grouping at the base of the Missourian is represented only by paleosols and localized coal. The immediately preceding grouping was removed very locally by paleovalley incision, as is evident at the 7\u201311 Mine, Columbiana County, Ohio, from which the original megafloral data were derived. At the few localities where incised paleodrainage exists, there may be a gap of \u223c1000\u00a0kyr, but a gap of no more than \u223c600\u00a0kyr occurs elsewhere in the Appalachian Basin at that level and its magnitude progressively decreases westward into the Illinois (\u223c300\u00a0kyr) and Midcontinent (&amp;lt;200\u00a0kyr) Basins. Thus, while a gap is present near the Desmoinesian\u2013Missourian boundary in North America, it is typically more than an order of magnitude smaller than that originally proposed and is similar to the gaps inferred at sequence boundaries between cyclothems at many horizons in the Pennsylvanian of North America.<\/jats:p>","DOI":"10.2110\/palo.2010.p10-049r","type":"journal-article","created":{"date-parts":[[2011,3,10]],"date-time":"2011-03-10T12:18:47Z","timestamp":1299759527000},"page":"125-139","source":"Crossref","is-referenced-by-count":71,"title":["NO MAJOR STRATIGRAPHIC GAP EXISTS NEAR THE MIDDLE\u2013UPPER PENNSYLVANIAN (DESMOINESIAN\u2013MISSOURIAN) BOUNDARY IN NORTH AMERICA"],"prefix":"10.2110","volume":"26","author":[{"given":"HOWARD J.","family":"FALCON-LANG","sequence":"first","affiliation":[{"name":"1Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"PHILIP H.","family":"HECKEL","sequence":"additional","affiliation":[{"name":"2Department of Geoscience, University of Iowa, Iowa City, Iowa 52242, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"WILLIAM A.","family":"DIMICHELE","sequence":"additional","affiliation":[{"name":"3Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"JR","given":"BASCOMBE M.","family":"BLAKE","sequence":"additional","affiliation":[{"name":"4West Virginia Geological Survey, 1 Mont Chateau Road, Morgantown, West Virginia 26508, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"CARY R.","family":"EASTERDAY","sequence":"additional","affiliation":[{"name":"5Department of Earth Sciences, Northeastern Illinois University, 5500 North Saint Louis Avenue, Chicago, Illinois 60625, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"CORTLAND F.","family":"EBLE","sequence":"additional","affiliation":[{"name":"6Kentucky Geological Survey, 228 MMRB, University of Kentucky, Lexington, Kentucky 40506-0107, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"SCOTT","family":"ELRICK","sequence":"additional","affiliation":[{"name":"7Illinois State Geological Survey, Champaign, Illinois 61820, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ROBERT A.","family":"GASTALDO","sequence":"additional","affiliation":[{"name":"8Department of Geology, Colby College, 5807 Mayflower Hill, Waterville, Maine 04901, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"STEPHEN F.","family":"GREB","sequence":"additional","affiliation":[{"name":"6Kentucky Geological Survey, 228 MMRB, University of Kentucky, Lexington, Kentucky 40506-0107, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RONALD L.","family":"MARTINO","sequence":"additional","affiliation":[{"name":"9Department of Geology, Marshall University, Huntington, West Virginia 25701, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W. 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