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A new paradoxidid species, Hydrocephalus vikensis, is described from the lower Middle Cambrian praecurrens Zone in Jamtland, central Sweden. It is contrasted with typical Hydrocephalus species and shows features that recall Paradoxides. The genus Hydrocephalus BARRANDE is discussed; the validity of the related genus Rejkocephalus KORDULE is considered to be doubtful. The associated fauna is listed and an agnostoid that differs slightly from Condylopyge regia (SJOGREN) is illustrated.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
391--401
Opis fizyczny
Bibliogr. 38 poz.,Tabl. 3,Fot., rys.,
Twórcy
autor
- The Natural History Museum, Cromwell Road, London SW7 5BD, UK, A.Rushton@nhm.ac.uk
Bibliografia
- AXHEIMER, N. 2006. The lower and middle Cambrian of Sweden: trilobites, biostratigraphy and intercontinental correlation. Synthesis, 1-21 + 7 papers. Litholund theses No. 10, Department of Geology, Lund University.
- BABCOCK, L.E., PENG, S.C., GEYER, G. & SHERGOLD, J.H. 2005. Changing perspectives on Cambrian chronostratigraphy and progress toward subdivision of the Cambrian System. Geosciences Journal, 9, 101-106.
- BARRANDE, J. 1846. Notice Préliminaire sur le Système Silurien et les Trilobites de Bohême. Hirschfeld, Leipzic, 1-97.
- BARRANDE, J. 1852. Systême Silurien du centre de la Bohême. 1ère partie. Recherches Paléontologiques, vol. 1, Crustacés, Trilobites. xxx + 935 pp., 2 vols. Prague, Paris.
- BERGSTRÖM, J. 1980. Middle and Upper Cambrian biostratigraphy and sedimentation in south central Jämtland, Sweden. Geologiska Föreningens i Stockholm Förhandlingar, 102, 373-376.
- BOECK, C. 1827. Notitser til Laeren om Trilobiterne. Magazin for Naturvidenskaberne, Christiania, 8 (1), 11-44.
- COOPER, R.A., 1990. Interpretation of tectonically deformed fossils. New Zealand Journal of Geology and Geophysics, 33, 321-332.
- FLETCHER T.P., THEOKRITOFF, G., LORD, G.S. & ZEOLI, G. 2005. The early paradoxidid harlani trilobite fauna of Massachusetts and its correlatives in Newfoundland, Morocco, and Spain. Journal of Paleontology, 79, 312-336.
- GEYER, G. 2005. The base of a revised Middle Cambrian: are suitable concepts for a series boundary in reach? Geosciences Journal, 9, 81-99.
- HAWLE, I. & CORDA, A.J.C. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen der Königlichen Böhmischen Gesellschaft der Wissenschaften. Prague, 5, 1-176.
- HORNÝ., R. & BASTL, F. 1970. Type specimens of Fossils in the National Museum Prague. Volume 1. Trilobita. 354 pp. National Museum, Prague.
- I.C.Z.N. 1999. International Code of Zoological Nomenclature, 4th edition. 306 pp. International Trust for Zoological Nomenclature, London.
- JEGOROVA, L. I. [= EGOROVA], SHABANOV, YU. YA., ROSANOV, A. YU., SAVITSKY, V.E., CHERNYSHEVA, N. E. & SHISHKIN, B. B. 1976. Elankan and Kuonaman faciostratotypes of the Lower to Middle Cambrian boundary in Siberia. Trudy Sibirskiy Nauchno-issledovatel’skiy Institut Geologii Geofiziki i Mineral’nogo Syr’ya (SNIIGGIMS), 211, 165 pp. [In Russian]
- KARIS, L. & STRÖMBERG, A.G.B. 1998. Beskrivning till berggrundskartan över Jämtlands län. Del 2: Fjälldelen. Sveriges Geologiska Undersökning, Series Ca, 53:2, 363 pp.
- KORDULE, V. 1990. Rejkocephalus, a new paradoxid genus from the Middle Cambrian of Bohemia (Trilobita). Vĕstník Ústředního Ústavu Geologického, 65, 55-60.
- LIÑAN, E. & GOZALO R. 1986. Trilobites del cámbrico inferior y medio de Murero (Cordillera Ibérica). Memorias del Museo Paleontologico de la Universidad de Zaragoza, 2, 104 pp.
- LINNARSSON, G. 1877. Om faunan i lagren med Paradoxides ölandicus. Geologiska Föreningens i Stockholm Förhandlingar, 3, 352-380.
- LINNARSSON, G. 1879. Om faunen i kalken med Conocoryphe exsulans (“coronatuskalken”). Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 35, 31 pp.
- LINNARSSON, G. 1882. De undre Paradoxideslagren vid Andrarum. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 54, 47 pp.
- NIELSEN, A.T. & SCHOVSBO, H.S. 2006. Cambrian to basal Ordovician lithostratigraphy in southern Scandinavia. Bulletin of the Geological Society of Denmark, 53, 47-92.
- RUSHTON, A.W.A. 2006. Revision of the middle Cambrian trilobite Paradoxides jemtlandicus. Geological Magazine, 143 (6), 771-776.
- SALTER, J.W. 1866. On the fossils of North Wales. Appendix, pp. 239-363. In: RAMSAY, A.C., The Geology of North Wales. Memoirs of the Geological Survey of Great Britain 3, 239-363, 372-381.
- SJÖGREN, A. 1872. Om några försteningar i Ölands Kambriska lager. Geologiska Föreningens i Stockholm Förhandlingar, 1, 67-80.
- ŠNAJDR, M. 1958. Trilobiti českého středního kambria. Rozpravy Ústředního Ústavu Geologického, 24, 280 pp.
- ŠNAJDR, M. 1987. The genera Paradoxides Brongniart and Hydrocephalus Barrande (Trilobita). Vĕstník Ústředního Ústavu Geologického, 62, 97-104.
- SOLOVJEV, I.A. 1969. New species of Paradoxides (Trilobita) from the oil shales in the Amgisk Stage of northern Yakutia. Uchenye Zapiski Nauchno-Issledovatel’skogo Instituta Geologii Arktiki, Paleontologiya i biostratigrafiya (NIIGA), 25, 9-20. [In Russian]
- ŠUF, J. 1926. O českých paradoxidech se zvláštním zřetelem k jejich vývoji (Développement des paradoxidés tcheques). Sborník Státního Geologického Ústavu Československé Republiky Ročník, 6, 31-67. [In Czech and French]
- SUVOROVA, N.P. 1956. Trilobites from the Cambrian of the eastern Siberian Platform. Part 1. Protolenidae. Trudy Paleontologicheskogo Instituta, Akademiya Nauk SSSR, 73, 158 pp. [In Russian]
- THORSLUND, P. 1940. On the Chasmops Series of Jemtland and Södermanland (Tvären). Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 436, 191 pp.
- WESTERGÅRD, A.H. 1936. Paradoxides œlandicus Beds of Öland. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 394, 66 pp.
- WESTERGÅRD, A.H. 1946. Agnostidea of the Middle Cambrian of Sweden. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 477, 140 pp.
- WESTERGÅRD, A.H. 1948. Non-agnostidean trilobites of the Middle Cambrian of Sweden. I. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 498, 32 pp.
- WESTERGÅRD, A.H. 1950. Non-agnostidean trilobites of the Middle Cambrian of Sweden. II. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 511, 56 pp.
- WESTERGÅRD, A.H. 1953. Non-agnostidean trilobites of the Middle Cambrian of Sweden. III. Sveriges Geologiska Undersökning, Avhandlingar och uppsatser, Ser. C, 526, 58 pp.
- WHITEHOUSE, F.W. 1939. The Cambrian faunas of northeastern Australia. Part 3: the polymerid trilobites. (With supplement No. 1). Memoirs of the Queensland Museum 11, 179-282.
- WHITTINGTON, H.B. 1990. Articulation and exuviations in Cambrian trilobites. Philosophical Transactions of the Royal Society of London Series B, 329, 27-46.
- WHITTINGTON, H.B., CHATTERTON, B.D.E., SPEYER, S.E. & al. 1997. Trilobita. Introduction, Order Agnostida, Order Redlichiida. Treatise on Invertebrate Paleontology, Part O, revised, vol.1. xxiv + 530 pp. University of Kansas and Geological Society of America.
- ZHANG WENTANG, LU YANHAO, ZHU ZHAOLING, QIAN YIYANG, LIN HUANLING, ZHOU ZHIYI, ZHANG SHENGUI & YUAN JINLIANG. 1980. Cambrian trilobite faunas of southwestern China. Palaeontologica Sinica, No. 159 (New Series B, No. 16), 497 pp. [In Chinese, English summary]
Typ dokumentu
Bibliografia
Identyfikator YADDA
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