The Ordovician zone index conodont <i>Amorphognathus ordovicicus</i> Branson &amp; Mehl, 1933 from its type locality and the evolution of the genus <i>Amorphognathus</i> Branson &amp; Mehl, 1933

Bergström, Stig M.; Leslie, Stephen A.

doi:https://doi.org/10.1144/jm.29.1.73

Articles | Volume 29, issue 1

Article
Metrics
Related articles

Articles | Volume 29, issue 1

https://doi.org/10.1144/jm.29.1.73

Articles | Volume 29, issue 1

Article
Metrics
Related articles

01 Apr 2010

| 01 Apr 2010

The Ordovician zone index conodont Amorphognathus ordovicicus Branson & Mehl, 1933 from its type locality and the evolution of the genus Amorphognathus Branson & Mehl, 1933

Stig M. Bergström and Stephen A. Leslie

Stig M. Bergström

School of Earth Sciences, Division of Geological Sciences, The Ohio State University, 155 S. Oval Mall, Columbus, Ohio 43210, USA

Stephen A. Leslie

Department of Geology and Environmental Science, James Madison University, MSC 6903, Harrisonburg, VA 22807, USA

Cited articles

T., An: The Lower Paleozoic conodonts of South ChinaBeijing University Press, Beijing, 238pp., 1987.

S. M., Bergström: Conodonts from the Ludibundus Limestone (Middle Ordovician) of the Tväen area (S.E. Sweden), Arkiv för Mineralogi och Geologi, 3, 1-61, 1962.

S. M., Bergström: Conodont biostratigraphy of the Middle and Upper Ordovician of Europe and eastern North America, Geological Society of America Memoir, 127, 83-161, 1971.

S. M., Bergström: Middle and Upper Ordovician conodont and graptolite biostratigraphy of the Marathon, Texas graptolite zone reference standard, Palaeontology, 21, 723-758, 1978.

S. M., Bergström: Biogeography, evolutionary relationships, and biostratigraphic significance of Ordovician platform conodonts, Fossils and Strata, 15, 35-58, 1983.

S. M., Bergström: The Red River problem revisited: stratigraphic relationships in the Upper Ordovician of central and western United States, INSUGEO, Serie Correlación Geológica, 17, 47-52, 2003.

S. M., Bergström: The Ordovician conodont biostratigraphy of the Siljan region, south-central Sweden: A brief review of an international reference standard, Sveriges Geologiska Undersökning (Geological Survey of Sweden) Rapporter och Meddelanden, 128, 26-41, 2007.

S. M., Bergström and W. C., Sweet: Conodonts from the Lexington Limestone (Middle Ordovician) of Kentucky, and its lateral equivalents in Ohio and Indiana, Bulletins of American Paleontology, 50, 269-441, 1966.

S. M., Bergström, M. R., Saltzman and B., Schmitz: First record of the Hirnantian (Upper Ordovician) δ¹³C excursion in the North American Midcontinent and its regional implications, Geological Magazine, 143, 657-678, 2006.

E. B., Branson and M. G., Mehl: Conodont studies Number 1, The University of Missouri Studies, 8, 1-76, 1933a.

E. B., Branson and M. G., Mehl: Conodonts studies Number 2, The University of Missouri Studies, 8, 77-167, 1933b.

B., Del Moral and G. N., Sarmiento: Conodontos del Katiense (Ordovícico Superior) del sector meridional de la Zona Centroibérica (España), Revista de Micropaleontología, 40, 169-245, 2008.

J., Dzik: Remarks on the evolution of Ordovician conodonts, Acta Palaeontologica Polonica, 21, 395-455, 1976.

J., Dzik: Conodonts of the Mojcza Limestone, Palaeontologia Polonica, 53, 43-128, 1994.

J., Dzik: Evolution of the late Ordovician high-latitude conodonts and dating of Gondwana glaciations, Bollettino della Società Paleontologica Italiana, 37, 237-253, 1999.

A., Ferretti and C. R., Barnes: Upper Ordovician conodonts from the Kalkbank Limestone of Thuringia, Germany, Palaeontology, 40, 15-42, 1997.

A., Ferretti and E., Serpagli: Late Ordovician conodont faunas from southern Sardinia, Italy: biostratigraphic and paleogeographic implications, Bollettino della Società Paleontologica Italiana, 17, 215-236, 1998.

D., Goldman and S. M., Bergström: Late Ordovician graptolites from the North American Midcontinent, Palaeontology, 40, 965-1010, 1997.

D., Goldman, S. M., Bergström and C. E., Mitchell: Revision of Zone 13 graptolite biostratigraphy in the Marathon, Texas standard succession and its bearing on Upper Ordovician graptolite biostratigraphy, Lethaia, 28, 115-128, 1995.

G., Hamar: The Middle Ordovician of the Oslo Region, Norway. 22. Preliminary report on conodonts from the Oslo–Asker and Ringerike districts, Norsk Geologisk Tidsskrift, 46, 27-83, 1966.

G. J., Hinde: On conodonts from the Chazy and Cincinnati Group of the Cambro-Silurian, and from the Hamilton and Genessee-shale divisions of the Devonian, in Canada and the United States, Quarterly Journal of the Geological Society of London, 35, 351-369, 1879.

S. A., Leslie and S. M., Bergström: The first described diverse Upper Ordovician (Cincinnatian) conodont fauna in the world: new data based on rediscovery of Branson & Mehl’s (1933) locality at Ozora, Missouri, Geological Association of Canada Annual Meeting 2004, Abstract Volume, 29, 93-2004.

S. A., Leslie and S. M., Bergström: Rediscovery of Branson & Mehl’s classical Ozora, Missouri conodont locality and the morphology of the Upper Ordovician conodont zone index Amorphognathus ordovicicus, Iowa Department of Natural Resources, Iowa Geological Survey Guidebook Series, 24, 38-41, 2005.

M., Lindström: Genus Amorphognathus Branson & Mehl, 1933In: (Ed.), Catalogue of conodonts, IIIESchweizerbart’sche Verlagsbuchhandlung, Stuttgart, 21–52., 1977.

M., Lindström, P. R., Racheboeuf and J.-L., Henry: Ordovician conodonts from the Postolonnec Formation (Crozon Peninsula, Massif Armoricain) and their stratigraphic significance, Geologica et Palaeontologica, 8, 15-28, 1974.

P., Männik and V., Viira: Distribution of Ordovician conodonts, Estonian Geological Sections, Mehikoorma (421) drill core, 6, 16-20, 2005.

G. K., Merrill: Ordovician conodonts from the Åland Islands, Finland, Geologiska Föreningens i Stockholm Förhandlingar, 101, 329-341, 1980.

M. J., Orchard: Upper Ordovician conodonts from England and Wales, Geologica et Palaeontologica, 24, 9-44, 1980.

C. H., Pander: Monographie der fossilen Fische des silurischen Systems der russich-baltischen GouvernementsBuchdruckeri der Kaiserlichen Akademie der Wissenschaften, StPetersburg, 91pp., 1856.

F. H. T., Rhodes: Some British Lower Palaeozoic conodont faunas, Philosophical Transactions of the Royal Society London, Series B, 237, 261-334, 1953.

F. H. T., Rhodes: The conodont fauna of the Keisley Limestone, Quarterly Journal of the Geological Society of London, 111, 117-142, 1955.

J. G., Richardson and S. M., Bergström: Regional stratigraphic relationships of the Trenton Limestone (Chatfieldian, Ordovician) in the eastern North American Midcontinent, Northeastern Geology and Environmental Sciences, 18, 93-115, 2003.

N. M., Savage and M. G., Bassett: Caradoc–Ashgill conodont faunas from Wales and the Welsh Borderland, Palaeontology, 28, 679-713, 1985.

E., Serpagli: I conodonti dell’Ordovician Superiore (Ashgilliano) delle Alpi Carniche, Bollettino della Società Paleontologica Italiana, 13, 17-98, 1967.

W. C., Sweet: Late Ordovician conodonts and biostratigraphy of the Western Midcontinent Province, Brigham Young University Geology Studies, 26, 45-85, 1979.

W. C., Sweet: The Conodonta: Morphology, taxonomy, paleoecology and evolutionary history of a long-extinct animal phylumClarendon Press, Oxford, 212pp., 1988.

W. C., Sweet: Conodonts and biostratigraphy of Upper Ordovician strata along a shelf to basin transect in central Nevada, Journal of Paleontology, 74, 1148-1160, 2000.

W. C., Sweet, T., Thompson and I. R., Satterfield: Conodont stratigraphy of the Cape Limestone (Maysvillian) of eastern Missouri, Missouri Geological Survey Report of Investigations, 57, 1-60, 1975.

T., Thompson: Paleozoic succession in Missouri. Part 2. Ordovician System, Missouri Department of Natural Resources Division of Geology and Land Survey. Report of Investigations, 70, 1-282, 1991.

T. Y., Tolmacheva: Apparatus of the conodont Scolopodus striatus Pander, 1856 and a re-evaluation of Pander’s species of Scolopodus, Acta Palaeontologica Polonica, 51, 247-260, 2006.

E. O., Ulrich and R. S., Bassler: A classification of the tooth-like fossils, conodonts, with descriptions of American Devonian and Mississippian species, Proceedings US National Museum, 68, 1-63, 1926.

X., Wang, Q., Zeng, T., Zhou, S., Ni, G., Xu, Q., Sun, Z., Li, L., Xian and C., Lai: Latest Ordovician and earliest Silurian faunas from the eastern Yangtze Gorges, China with comments on the Ordovician–Silurian boundary, Bulletin Yichang Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, 6, 129-183, 1983.

S., Weller and S., St. Clair: Geology of Ste. Genevieve County, Missouri, Missouri Bureau of Geology and Mines, 2nd series, 22, 1-352, 1928.

M., Weyant: Conodontes ordoviciens de L’ile Hoved (Archipel Arctique Canadien), Bulletin de la Société Linnéenne de Normandie, 9, 20-66, 1968.

C. G., Winder: Conodonts from the upper Cobourg Formation (late Middle Ordovician) at Colborne, Ontario, Journal of Paleontology, 40, 46-63, 1966.