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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Canada
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Eastern Canada
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Ontario (1)
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Commonwealth of Independent States
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Belarus
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Zhitkovichi Belarus (1)
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Europe
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Belarus
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Zhitkovichi Belarus (1)
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North America
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Great Lakes region (1)
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Michigan Basin (1)
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United States
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Michigan
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Michigan Lower Peninsula
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Presque Isle County Michigan (1)
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New York (2)
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Ohio
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Delaware County Ohio (1)
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Franklin County Ohio (1)
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Ottawa County Ohio (1)
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Sandusky County Ohio (1)
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Pennsylvania (1)
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fossils
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Chordata
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Vertebrata (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda
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Paleocopida (1)
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microfossils
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Conodonta
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Icriodus (2)
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Panderodus (1)
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Polygnathus (1)
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geochronology methods
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tephrochronology (1)
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geologic age
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Paleozoic
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Devonian
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Lower Devonian (1)
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Middle Devonian
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Columbus Limestone (5)
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Delaware Limestone (7)
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Detroit River Group (1)
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Dundee Limestone (2)
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Eifelian (3)
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Hamilton Group (1)
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Marcellus Shale (1)
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Onondaga Limestone (1)
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Upper Devonian
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Olentangy Shale (2)
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Primary terms
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biogeography (2)
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Canada
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Eastern Canada
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Ontario (1)
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-
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Chordata
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Vertebrata (1)
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Europe
-
Belarus
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Zhitkovichi Belarus (1)
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-
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda
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Paleocopida (1)
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North America
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Great Lakes region (1)
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Michigan Basin (1)
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paleoecology (1)
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paleogeography (2)
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paleontology (2)
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Paleozoic
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Devonian
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Lower Devonian (1)
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Middle Devonian
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Columbus Limestone (5)
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Delaware Limestone (7)
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Detroit River Group (1)
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Dundee Limestone (2)
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Eifelian (3)
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Hamilton Group (1)
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Marcellus Shale (1)
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Onondaga Limestone (1)
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Upper Devonian
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Olentangy Shale (2)
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sedimentary rocks
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bone beds (1)
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carbonate rocks
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limestone (1)
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stratigraphy (4)
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United States
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Michigan
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Michigan Lower Peninsula
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Presque Isle County Michigan (1)
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New York (2)
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Ohio
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Delaware County Ohio (1)
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Franklin County Ohio (1)
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Ottawa County Ohio (1)
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Sandusky County Ohio (1)
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Pennsylvania (1)
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well-logging (1)
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rock formations
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Lucas Formation (2)
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sedimentary rocks
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sedimentary rocks
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bone beds (1)
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carbonate rocks
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limestone (1)
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Delaware Limestone
Taxonomy and biostratigraphic significance of Icriodus orri Klapper and Barrick and related Middle Devonian conodont species
Correlation of the subsurface Lower and Middle Devonian of the Lake Erie region
Ostracodes of the superfamilies Beyrichiacea and Drepanellacea from Middle Devonian rocks of central Ohio
Paleoecologic and paleogeographic factors in the distribution of lower Middle Devonian conodonts from north-central Ohio
Several species of conodonts in the Columbus and Delaware limestones of north-central Ohio are segregated stratigraphically and form associations that correspond fairly well to lithofacies in which they occur. Polygnathus linguiformis , P. angusticostatus , P. angustipennatus , P. intermedius , and Panderodus sp. appear to have been benthic creatures sensitive to substrate texture and energy levels. Other species of Polygnathus may have been benthic, but a nektonic habit is possible for some. Prioniodina tortoides preferred deep-water conditions but was likely nektonic. Simple-cone taxa other than Panderodus and species of Icriodus are ubiquitous and considered to have been shallow-pelagic plankton or nekton. Icriodus orri shows some preference for near-shore environments. Associations similar to some in this area occur in New York, central Ohio, and southwestern Ontario. Endemic forms appear to define a faunal realm limited to the Illinois, Appalachian, and southeastern Michigan basins that is distinct from a realm extending westward and northwestward from the northern to westernmost Michigan Basin. Barriers to intermixing of endemics involved tectonic elements but also hypersalinity and other environmental factors.