Abstract
The Eoplacognathus pseudoplanus Zone is defined by a conodont fauna composed by E. pseudoplanus (Viira) and Dzikodus tablepointensis (Stouge) among others in the Central Precordillera, Sierra de La Trampra region. We revised the biostratigraphical distribution and control biofacies of the conodonts D. tablepointensis and E. pseudoplanus in the Middle Ordovician of the Precordillera. This study confirms that these species has a similar biostratigraphical distribution to those of equivalent age in south-central China, Baltica and Midcontinent region. We also corroborate that the presence of D. tablepointensis is accurately positioned in the E. pseudoplanus Zone. In this paper we discuss for the first time the morphological affinities of D. tablepointensis and E. pseudoplanus elements from the Precordillera with those same species from southcentral China and Baltica. On the other hand, we review the genus “Polonodus” galerus Albanesi and propose it as Kallidontus? galerus (Albanesi), extending the biostratigraphical record of the genus Kallidontus from the late Tremadocian to middle Darriwilian.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Albanesi, G., 1998, Taxonomía de conodontes de las secuencias ordovícicas del Cerro Potrerillo, Precordillera Central de San Juan, República Argentina. In: Albanesi, G., Hünicken M., and Barnes, C., (eds.), Bioestratigrafía, Biofacies y Taxonomía de conodontes de las secuencias ordovícicas del cerro Potrerillo, Precordillera Central de San Juan, República Argentina. Academia Nacional de Ciencias, Córdoba, 12, 99–253.
Albanesi, G. and Ortega, G., 2002, Advances on conodont-graptolite biostratigraphy of the Ordovician System of Argentina. In: Aceñolaza, F.G., (ed.), Aspects of Ordovician System in Argentina. INSUGEO, Serie Correlación Geológica, Tucumán 16, 143–166.
Albanesi, G.L., Carrera, M.G., Cañas, F.L., and Saltzman, M.R., 2003, The Niquivil Section, Precordillera of San Juan, Argentina, proposed GSSP for the Lower/Middle Ordovician boundary. In: Albanesi, G.L, Beresi, M.S. and Peralta, S.H. (eds.), Ordovician from the Andes. Serie Correlación Geológica, Tucumán, 17, 30–44.
Astini, R.A., 1994, Significado estratigráfico del Miembro Superior de la Formación San Juan, cordón de Las Chacritas, Ordovícico medio de la Precordillera de San Juan. Revista Asociación Geológica Argentina, 49, 365–367.
Baldis, B. and Cheblis, W., 1969, Estructura profunda del área central de la Precordillera Sanjuanina. IV Jornadas Geológicas Argentinas I, Buenos Aires, 47–66.
Bassler, R.S., 1925, Classification and stratigraphic of McLish and Tulip Creek Formation (Middle Ordovician) of south-central Oklahoma. Oklahoma Geological Survey Bulletin, 141, 1–53.
Beresi, M., Peralta, S., and Heredia, S., 2000, Paleontological and microfacial features of the Las Chacritas Formation (Middle Ordovician), Central Precordillera, San Juan province, Argentina. I Congreso Ibérico de Paleontología, XVI Jornadas de la Sociedad Española de Paleontología, Universidad de Evora, Portugal, Libro de Resúmenes, 38.
Bergström, S., 1971, Middle and Upper Ordovician conodont and graptolite bioestratigraphy of the Marathon, Texas graptolite zone reference standard. Palaeontology, 21, 723–758.
Carrera, M.G., 1997, Análisis paleoecológico de la fauna de poríferos del Llanvirniano tardío de la Precordillera Argentina. Ameghiniana, 34, 309–316.
Carrera, M.G. and Astini, R.A., 1998, Valoración de las restricciones ambientales durante la transición Arenigiano-Llanvirniano, Ordovícico de la Precordillera. Revista Asociación Geológica Argentina, 53, 41–56.
Dzik, J., 1976, Remarks on the evolution of Ordovician conodonts. Acta Palaeontologica Polonica, 21, 395–455.
Epstein, A.C., Epstein, J.B., and Harris, L.D., 1977, Conodont color alteration — An index to organic metamorphism. United States Geological Survey Professional Paper, 995, 1–27.
Espisúa, E., 1968, El Paleozoico inferior del Río de Las Chacritas, Dpto. de Jáchal, Provincia de San Juan, con especial referencia al Silúrico. Revista Asociación Geológica Argentina, 23, 297–311.
Hamar, G., 1964, The Middle Ordovician of the Oslo Region, Norway, 17. Conodonts from the Lower Middle Ordovician of Ringerike. Norsk Geologisk Tidsskrift, 44, 243–292.
Hamar, G., 1966, The Middle Ordovician of the Oslo region, Norway, 22. Preliminary report on conodonts from the Olso-Asker and Ringerike districts. Norsk Geologisk Tidsskrift, 46, 27–83.
Harris, A., Bergström, S., Ethington, R.D., and Ross, R., 1979, Aspects of Middle and Upper Ordovician Conodont biostratigraphy of carbonate facies in Nevada and Southeast California and comparison with some Appalachian successions. Brigham Young University Geological Studies, 26, 7–44.
Heredia, S. and Mestre, A., 2011, Middle Darriwilian Conodont Biostratigraphy in the Argentine Precordillera. In: Gutiérrez Marco, J.C., Rábano, I., and García Bellido, D. (eds.), Ordovician of the World. Cuadernos del Museo Geominero, 14, 229–234.
Heredia, S., Peralta, S., and Beresi, M., 2005, Darriwilian conodont biostratigraphy of the Las Chacritas Formation, Central Precordillera (San Juan Province, Argentina). Geologica Acta, 385–394.
Heredia, S., Beresi, M., and Mestre, A., 2011, La estratigrafía del Ordovícico Medio del río Las Chacritas, Precordillera Central de San Juan. Serie Correlación Geológica, 27, 18–26.
Hünicken, M. and Ortega, G., 1987, Lower Llanvirn-Lower Caradoc (Ordovician) conodonts and graptolites from the Argentine Central Precordillera. In: Austin, R.L. (ed.), Conodonts: Investigative Techniques and Applications. Ellis Horwood Limited. Chichester, 7. 136–145
Keller, M., 1999, Argentine Precordillera: Sedimentary and plate tectonic history of a Laurentian crustal fragment in South America. Geological Society of America Special Paper, 341, 1–131.
Löfgren, A., 1978, Arenigian and Llanvirnian conodonts from Jämtland, northern Sweden. Fossils and Strata, 13, 1–129.
Löfgren, A., 1990, Non-platform elements of the Ordovician conodont genus Polonodus. Paläontologische Zeitschrift, 64, 245–259.
Löfgren, A., 2000a, Conodont biozonation in the upper Arenig of Sweden. Geological Magazine, 137, 53–65.
Löfgren, A., 2000b, Early to early Middle Ordovician conodont biostratigraphy of the Gillberga quarry, northern Öland, Sweden. GFF, 122, 321–338.
Löfgren, A., 2004, The conodont fauna in the Middle Ordovician Eoplacognathus pseudoplanus Zone of Baltoscandia. Geological Magazine, 141, 505–524.
Löfgren, A. and Zhang J., 2003, Element association and morphology in some Middle Ordovician platformequipped conodonts. Journal of Paleontology, 77, 723–739.
Mestre, A., 2010, Estratigrafía y bioestratigrafía de Conodontes de la “Transición Cuspidal” de la Formación San Juan al sur del paralelo 30°, Precordillera de San Juan. Doctoral thesis, Facultad de Ciencias Exactas, Físicas y Naturales de la Universidad Nacional de San Juan, 330 p. (unpublished)
Mestre, A. and Heredia, S., 2012, The Darriwilian species of the genus Histiodella (Conodonta) in the Argentina Precordillera. Alcheringa, 36, 141–150.
Miller, J.F., 1980, Taxonomic revisions of some Upper Cambrian and Lower Ordovician conodontes, with comments on their evolution. University of Kansas Paleontological Contributions Paper, 99, 1–44.
Ortega, G., Albanesi, G., and Hünicken, M., 1995, Bioestratigrafía en base a conodontes y graptolitos de las formaciones San Juan (techo) y Gualcamayo (Arenigiano-Llanvirniano) en el cerro Potrerillo, Precordillera de San Juan, Argentina. Boletín de la Academia Nacional de Ciencias, Córdoba, 60, 317–364.
Peralta, S. and Baldis, B., 1995, Graptolites y trilobites del Ordovícico tardío en el perfil del río de Las Chacritas, Precordillera Central de San Juan, Argentina. Actas V Congreso Argentino Paleontología y Bioestratigrafía, Trelew (1994), 201–205.
Peralta, S., Heredia, S., and Beresi, M., 1999?, Upper Arenig-Lower Llanvirn sequence of the Las Chacritas River, Central Precordillera, San Juan Province, Argentina. In: Kraft, P., Fatka, O. (eds.), Quo vadis Ordovician? Short papers of the 8th International Symposium on the Ordovician System, Acta Universitatis Carolinae, Geologica, 43, 123–126.
Peralta, S., Heredia, S., and Beresi, M., 1999b, Estratigrafía del Ordovícico del río de Las Chacritas, Sierra de La Trampa, Precordillera Central de San Juan. XIV Congreso Geológico Argentino, actas I, Salta, 397–400.
Pyle, L. and Barnes, C., 2002, Taxonomy, Evolution, and Biostratigraphy of Conodonts from the Kechika Formation, Skoki Formation, and Road River Group (Upper Cambrian to Lower Silurian), Northeastern British Columbia. National Research Council of Canada, 242 p.
Rasmussen, J.A., 2001, Conodont biostratigraphy and taxonomy of the Ordovician shelf margin deposits in the Scandinavian Caledonides. Fossils and Strata, 48, 1–180.
Sarmiento, G.N., 1987, Bioestratigrafía y conodontes de la Formación San Juan (Ordovícico) aflorante en el flanco oriental de la sierra de Villicúm, Provincia de San Juan, Argentina. Tesis Doctoral en Ciencias Geológicas, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, 336 p. (unpublished).
Sarmiento, G.N., 1991, Conodontos de la zona de suecicus (Llanvirniano inferior) en la sierra de Villicúm, Precordillera de San Juan, Argentina. Revista Española de Micropaleontología, 23, 113–1132.
Seddon, G. and Sweet, W.C., 1971, An ecologic model for conodonts. Journal of Paleontology, 45, 869–880.
Stouge, S., 1984, Conodonts of the Middle Ordovician Table Head Formation, western Newfoundland. Fossils and Strata, 16, 1–145.
Stouge, S. and Bagnoli, G., 1990, Lower Ordovician (Volkhovian — Kundan) conodonts from Hagudden, northern Öland, Sweden. Palaeontographia Italica, 77, 1–54.
Stouge, S. and Bagnoli, G., 1999, The suprageneric classification of some prioniodontid conodontes. Bollettino della Società Paleontology, 36, 145–158.
Sweet, W.C., 1981, Macromorphology of elements and apparatuses. In: Robinson, R.A. (ed.), Treatise on Invertebrate Paleontology, Pt. W, Miscellanea, Supplement 2, Conodonta. Lawrence, Kansas, Geological Society of America and University of Kansas Press, 5–20.
Sweet, W.C., 1988, The Conodonta: Morphology, Taxonomy, Paleoecology, and evolutionary history of a long-extinct animal phylum. Oxford Monographs on Geology and Geophysics, Clarendon Press, New York, No. 10, 212 p.
Viira, V., 1974, Ordovician conodonts of east Baltic. Tallinn, Valgus, 142 p.
Viira, V., Löfgren, A., Mägi, S., and Wickström, J., 2001, An Early to Middle Ordovician succession of conodont faunas at Mäekalda, northern Estonia. Geological Magazine, 138, 699–718.
Voldman, G., Albanesi, G., and Do Campo, M., 2008, Conodont palaeothermometry of contact metamorphism in Middle Ordovician rocks from the Precordillera of western Argentina. Geological Magazine, 145, 449–462.
Zhang, J., 1998, Conodonts from the Guniutan Formation (Llanvirnian) in Hubei and Hunan Provinces, south-central China. Stockholm Contributions in Geology, 46, 1–161.
Zhen, Y.Y. and Percival, I.G., 2004, Middle Ordovician (Darriwilian) conodonts from allocthonous limestones in the Oakdale Formation of central New South Wales. Alcheringa, 28, 77–111.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Mestre, A., Heredia, S. Biostratigraphic significance of Darriwilian conodonts from Sierra de La Trampa (Central Precordillera, San Juan, Argentina). Geosci J 17, 43–53 (2013). https://doi.org/10.1007/s12303-013-0006-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12303-013-0006-2