Upper Silurian and Lower Devonian conodonts from the Monte Cocco II Section (Carnic Alps, Italy)

 

Authors: Corriga MG, Corradini C

Published in: Bulletin of Geosciences, volume 84, issue 1; pages: 155 - 168; Received 24 November 2008; Accepted in revised form 10 March 2009; Online 23 March 2009

Keywords: Silurian/Devonian boundary, conodonts, biostratigraphy, taxonomy, Carnic Alps,

full text (PDF, 2.7 MB)

Export to RIS

 

Abstract

The upper Silurian-Lower Devonian Monte Cocco II section, located in the eastern part of the Carnic Alps, yielded abundant conodonts from five conodont biozones (snajdri, crispa, eosteinhornensis s.l., detortus and woschmidti). The eosteinhornensis s.l. interval Zone is introduced here to replace the “ Oz. remscheidensis i.Z.” of Corradini & Serpagli (1999). The Silurian/Devonian boundary is located in the upper part of the section; problems related to the accurate location of the Silurian/Devonian boundary on the basis of conodonts are discussed. A new taxon of the genus Pelekysgnathus is described, but left in open nomenclature. A few taxonomic notes on other selected taxa are also presented.

References

Barca, S., Corradini, C., Ferretti, A., Olivieri, R. & Serpagli, E. 1995. Conodont biostratigraphy of the “Ockerkalk” (Silurian) from southeastern Sardinia. Rivista Italiana di Paleontologia e Stratigrafia 100(4), 459-476.

Barrick, J.E. & Klapper, G. 1992. Late Silurian-Early Devonian conodonts from the Hunton Group (Upper Henryhouse, Haragan, and Bois d’Arc Formations), South-Central Oklahoma. Oklahoma Geological Survey Bulletin 145, 19-65.

Bateson, W. 1886. The Ancestry of the Chordata. Quarterly Journal of Microscopical Science 104, 535-572.

Bischoff, G. & Sannemann, D. 1958. Unterdevonische Conodonten aus dem Frankenwald. Notizblatt des hessisches Landesamt für Bodenforschung zu Wiesbaden 86, 87-110.

Branson, E.B. & Mehl, M.G. 1933. Conodonts from the Bainbridge (Silurian) of Missouri. University of Missouri Studies 8(1), 39-52.

Bultynck, P. 2003. Devonian Icridontidae: biostratigraphy, classification and remarks on paleoecology and dispersal. Revista Espanola de Micropaleontologia 35(3), 295-314.

Carls, P., Slavík, L. & Valenzuela-Ríos, J.I. 2005. A new Ludlow (Late Silurian) Spathognathodontidae (Conodonta) from Bohemia with incipient alternating denticulation. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 2005(9), 547-565.View article

Carls, P., Slavík, L. & Valenzuela-Ríos, J.I. 2007. Revisions of conodont biostratigraphy across the Silurian-Devonian boundary. Bulletin of Geosciences 82(2), 145-164.View article

Carls, P. & Weddige, K. 1996. Conodonten-Zone, globale, aktuelle; Unterdevon. In Weddige, K. (ed.) Devon-Korrelationtabelle. Senckenbergiana lethaea 76, 274.

Cockle, P. 1999. Conodont data in relation to Time, Space and Environmental Relationships in the Silurian (Late Llandovery- Ludlow) Succession at Boree Creek (New South Wales, Australia). Abhandlungen der Geologisches Bundesanstalt 54, 107-133.

Cooper, B.J. 1977. Toward a familial classification of Silurian conodonts. Journal of Paleontology 51, 1057-1071.

Corradini, C., Ferretti, A. & Serpagli, E. 1998. Wenlock and Pridoli conodonts from Argiola, East of Domusnovas, 194-198. In Serpagli, E. (ed.) Sardinia Guide-book, ECOS VII. Giornale di Geologia 60, Special Issue.

Corradini, C., Leone, F., Loi, A. & Serpagli, E. 2001. Conodont Stratigraphy of a highly tectonised Siluro-Devonian Section in the San Basilio area (SE Sardinia). Bollettino della Societa Paleontologica Italiana 40, 315-323.

Corradini, C., Pondrelli, M., Serventi, P. & Simonetto, L. 2003. The Silurian cephalopod limestone in the Monte Cocco area (Carnic Alps, Italy): Conodont biostratigraphy. Revista Espanola de Micropaleontologia 35(3), 285-294.

Corradini, C. & Serpagli, E. 1999. A Silurian conodont zonation from late Llandovery to end Prídoli in Sardinia. Bollettino della Societa Paleontologica Italiana 38(2-3), 255-273.

Corriga, M.G., Corradini, C. & Ferretti, A. 2009 [in press]. Silurian conodonts from Sardinia: an overview. Rendiconti della Societa Paleontologica Italiana 3, 13 pp.

Donoghue, P.C.J., Purnell, M.A., Aldrige, R.J. & Zhang, S. 2008. The interrelationships of ‘complex’ conodonts (Vertebrata). Journal of Systematic Palaeontology 6(2), 119-153.View article

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

Farrell, J.R. 2004. Siluro-devonian conodonts from the Camelford Limestone, Wellington, New South Wales, Australia. Palaeontology 47(4), 937-982.View article

Feruglio, G.B. 1970. Il giacimento ferro manganesifero del Monte Cocco (Alpi Carniche). Museo Friulano di Storia Naturale, Pubblicazione 18, 1-43.

Frech, F. 1888. Über das Devon der Ostalpen nebst Bermekungen über das Silur und einem paläontologischen Anhang. Zeitschrift der Deutschen Geologischen Gesellshaft 39, 659-738.

Gouwy, S. & Corradini, C. 2006. Graphic correlation of the Sardinian Ockerkalk (Upper Silurian): implications on the conodont biostratigraphy. GFF 128, 103-108.View article

Hass, W.H. 1959. Conodonts from the Chappel Limestone of Texas. U.S. Geological Survey Professional Paper 294, 365-399.

Herzog, U. 1988. Das Paläozoikum zwischen Poludnig und Osternig in der Östlichen Karnischen Alpen. Carinthia 2(47), 1-123.

Jeppsson, L. 1988. Conodont biostratigraphy of the Silurian-Devonian boundary stratotype at Klonk, Czechoslovakia. Geologica et Palaeontologica 22, 21-31.

Klapper, G. & Murphy, M.A. 1975. Silurian-Lower Devonian conodont sequence in the Roberts Mountains Formation of central Nevada. University of California Publications in Geological Sciences 111, 1-62.

Klapper, G. & Philip, G.M. 1971. Devonian conodnt apparatuses and their vicarious skeletal elements. Lethaia 4, 429-452.View article

Kříž, J. 1999. Silurian and lowermost Devonian bivalves of bohemian type from the Carnic Alps. Abhandlungen der Geologisches Bundesanstalt 56(1), 259-316.

Lane, H.R. & Ormiston, A.E. 1979. Siluro-Devonian biostratigraphy of the Salmontrout River area, east-central Alaska. Geologica et Palaeontologica 13, 39-96.

Link, A.G. & Druce, E.C. 1972. Ludlowian and Gennidian conodnt stratigraphy of the Yass basin, New South Wales. Bulletin of Australian Boureau of Mineral Resources, Geology and Geophysics 134, 1-136.

Mabillard, J.E. & Aldridge, R.J. 1983. Conodonts from the Coralliferous Group (Silurian) of Marloes Bay, South-West Dyfed, Wales. Geologica et Palaeontologica 17, 49-43.

Manzoni,M. 1965. Faune a conodonti del Siluriano e Devoniano delle Alpi Carniche. Giornale di Geologia 2(33), 179-200.

Miller, C.G. & Aldrige, R.J. 1993. The taxonomy and apparatus of the Silurian distomodontid conodont Coryssognathus Link & Druce, 1972. Journal of Micropalaeontology 12(2), 241-255.View article

Müller, K.J. & Müller, E.M. 1957. Early Upper Devonian (Indipendence) Conodonts from Iowa, part I. Journal of Paleontology 31(6), 1069-1108.

Murphy, M.A.&Matti, J.C. 1982. Lower Devonian conodonts (hesperius-kindlei zones), central Nevada. University of California Publications in Geological Sciences 123, 1-83.

Murphy, M.A., Valenzuela-Ríos, J.I. & Carls, P. 2004. On Classification of Pridoli (Silurian)-Lochkovian (Devonian) Spathognathodontidae (Conodonts). University of California, Riverside Campus Museum Contribution 6, 1-25.

Pander, C.H. 1856. Monographie der fossilen Fische des Silurischen Systems der Russisch-Baltischen Gouvernments. 83 pp. Petersburg.

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

Schönlaub, H.P. 1980 Carnic Alps. Field Trip A, 5-57. In Schönlaub, H.P. (ed.) Second European Conodont Symposium, ECOS II, Guidebook, Abstracts. Abhandlungen der Geologisches Bundesanstalt 35.

Serpagli, E., Corradini, C. & Ferretti, A. 1998. Conodonts from a Ludlow-Pridoli section near the Silius Village, 104-111. In Serpagli, E. (ed.) Sardinia Field-trip Guidebook, ECOS VII. Giornale di Geologia 60, Special Issue.

Serpagli, E., Corradini, C. & Olivieri, R., 1997. Occurrence and range of the Silurian conodont Coryssognathus dubius (Rhodes 1953) in southern Sardinia. Bollettino della Societa Paleontologica Italiana 35(3), 239-243.

Sweet, W.C. 1988. The Conodonta: morphology, taxonomy, paleoecology, and evolutionary history of a long-extinct animal phylum. Oxford Monographs on Geology and Geophysics 10. 212 pp. Clarendon Press, New York.

Thomas, L.A. 1949. Devonian-Mississippian Formations of southeast Iowa. Bulletin of the Geological Society of America 60, 403-438.View article

Viira, V. 1999. Late Silurian conodont biostratigraphy in the northern East Baltic. Bolletino della Societa Paleontologica Italiana 37, 299-310.

Walliser, O. 1964. Conodonten des Silurs. Abhandlungen des Hessischen Landesamtes für Bodenforschung zu Wiesbaden 41, 1-106.

Ziegler, W. 1960. Conodonten aus dem rheinischen Unterdevon (Gedinnium) des Remscheider Sattels (Rheinisches Schiefergebirge). Palaeontologische Zeitschrift 34(2), 169-200.View article

Zucchini, R. 1998. Miniere e mineralizzazioni della Provincia di Udine. Museo Friulano di Storia Naturale, Pubblicazione 43, 1-148.