Multielement Conodont Species and an Ecological Interpretation of the Lower Osagean (Lower Carboniferous) Conodont Zonation from Midcontinent North America

Trilobites from lower Mississippian Starved Basin facies of the Southern United States

“…Consequently, during the Late Kinderhookian and Early Osagean, while hundreds of meters of limestone were being deposited on the shelves, less than one meter of off-shelf sediment accumulated. These sedi ment-starved environments are now manifested as the Chappel Limestone of the Llano region of Texas, the Welden Limestone of the Arbuckle Mountains of Oklahoma, and the Chouteau Limestone and Springville Shale of Illinois (Chauff, 1983), and perhaps the Rockford Limestone of central Indiana. Lane (1978) termed these limestones the "starved magnafacies," inasmuch as these limestones, typicially less than a meter thick, can pre serve as many as 5 conodont zones.…”

“…Numerous authors (Hass, 1959;Lane, 1978;Haywa-Branch and Barrick, 1990;Chauff, 1983) have shown, through conodont zonation, that condensed stratigraphic packages are present in Lower Mississippian rocks of the south-central United States. The sediment-starved basin in which these strata were formed existed through much of the Late Kinderhookian and Osagean, some 15-17 million years (Sando, 1984).…”

A Description of the New Hybodont Shark Genus, Columnaodus, from the Burlington and Keokuk Limestones (Carboniferous, Mississippian, Osagean) of Illinois and Iowa, USA

“…The Burlington Limestone comprises part of the Osagean-type section and is therefore of Osagean (early-middle Mississippian) age [1]. This age has been corroborated by the Osagean conodont fauna that includes Pseudopolygnathus multistriatus and Indeodus regularis, as well as the fusilinid foraminiferan genera Priscella and Endothyra [1,[17][18][19][20][21][22][23].…”

Disrupted Conodont Bedding Plane Assemblages, Upper Bakken Formation (Lower Mississippian) From the Subsurface of Western Canada

“…However, specimens on core bedding plane surfaces and collections of discrete elements from Localities 1 and 2 appear insufficient to test apparatus re constructions of other taxa, such as Polygnathus inornatus sensu lato and P. longiposticus s.l., Mehlina, and Pseudopolygnathus. Apparatus reconstructions have been proposed for these taxa by Chauff (1981Chauff ( , 1983, Uyeno (in Norris et al, 1982), and Dzik (1997). In many of these reconstructions, the non-Pa elements appear to be indistinguishable from those of other ozarkodiniform taxa.…”