A new species of the conodont genus Siphonodella Branson & Mehl (late Tournaisian); pp. 188–192Full article in PDF format | https://doi.org/10.3176/earth.2017.15
A new upper Tournaisian (Lower Carboniferous) siphonodellid conodont species Siphonodella carinata n. sp. is described. The material comes from the shallow-water carbonate sediments of the Pechora Swell (Timan-Pechora region or NE of European Russia). The co-occurrence of conodonts Hindeodus cristulus (Youngquist & Miller), Bispathodus stabilis (Branson & Mehl) Morphotype 1, Polygnathus longiposticus Branson & Mehl and Pseudopolygnathus nodomarginatus (Branson) suggests the late Tournaisian (Lower Siphonodella crenulata Zone) age of the deposits. Morphologically the new species is similar to Siphonodella semichatovae Kononova & Lipnjagov and S. ludmilae Zhuravlev & Plotitsyn, but differs in possessing three rostral ridges at the late stages of ontogeny and Class III symmetry. The presence of the shallow-water siphonodellids Siphonodella bella Kononova & Migdisova and S. quasinuda Gagiev, Kononova & Pazuhin in the upper part of the Tournaisian is detected for the first time.
Corradini, C., Spaletta, C., Mossoni, A., Matyja, H. & Over, D. J. 2017. Conodonts across the Devonian/ Carboniferous boundary: a review and implication for the redefinition of the boundary and a proposal for an updated conodont zonation. Geological Magazine, 154, 888–902.
Ji, Q. 1985. Study on the phylogeny, taxonomy, zonation and biofacies of Siphonodella (Conodonta). Bulletin of the Institute of Geology, Chinese Academy of Geological Sciences, 11, 51–78.
Ji, Q. & Ziegler, W. 1992. Phylogeny, speciation and zonation of Siphonodella of shallow water facies (Conodonta, Early Carboniferous). Courier Forschungsinstitut Senckenberg, 154, 223–251.
Kaiser, S. I. & Corradini, C. 2011. The early siphonodellids (Conodonta, Late Devonian–Early Carboniferous): overview and taxonomic state. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 261, 19–35.
Kaiser, S. I., Becker, R. T., Spalletta, C. & Steuber, T. 2009. High-resolution conodont stratigraphy, biofacies and extinctions around the Hangenberg Event in pelagic successions from Austria, Italy and France. Palaeontographica Americana, 63, 97–139.
Lane, H. R. 1968. Symmetry in conodont element-pairs. Journal of Paleontology, 42, 1258–1263.
Paproth, E., Feist, R. & Flajs, G. 1991. Decision on the Devonian–Carboniferous boundary stratotype. Episodes, 14, 331–336.
Sandberg, C. A., Ziegler, W., Leuteritz, K. & Brill, S. M. 1978. Phylogeny, speciation, and zonation of Siphonodella (Conodonta, Upper Devonian and Lower Carboniferous. Newsletters on Stratigraphy, 7, 102–120.
Sweet, W. C. & Schönlaub, H. P. 1975. Conodonts of the Genus Oulodus Branson & Mehl, 1933. Geologica et Palaeontologica, 9, 41–59.
Zhuravlev, A. V. & Plotitsyn, A. N. The symmetry of the rostrum as a key to taxonomy of advanced Siphonodella (Conodonta, Early Carboniferous). Stratigraphy [in press].
Zhuravlev, A. V., Kossovaya, O. L., Sobolev, D. B. & Vevel, Y. A. 1998. Early Tournaisian (Early Carboniferous) shallow water communities (Eastern part of the Timan-Pechora Province). Ichthyolith Issues Special Publication, 4, 60–62.Zhuravlev, A. V., Kossovaya, O. L., Sobolev, D. B. & Vevel, Y. A. 1999. Biostratigraphy of the Lower Tournaisian (Lower Carboniferous) shallow-water deposits of the Eastern part of the Timan-Pechora Province. Newsletter on Carboniferous Stratigraphy, 17, 22–26.
Back to Issue