Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-02T20:11:36.022Z Has data issue: false hasContentIssue false
  • English
  • Français

The Upper Cambrian bradoriid ostracod Cyclotron lapworthi is a hesslandonid

Published online by Cambridge University Press:  03 November 2011

Mark Williams ,
David J. Siveter ,
Adrian W. A. Rushton  and
Vivianne Berg-Madsen
Mark Williams
Affiliation:
Department of Geology, University of Leicester, Leicester LE17RH, UK
David J. Siveter
Affiliation:
Department of Geology, University of Leicester, Leicester LE17RH, UK
Adrian W. A. Rushton
Affiliation:
British Geological Survey, Keyworth, Nottingham NG12 5GG, UK
Vivianne Berg-Madsen
Affiliation:
Palaeontological Museum, University of Uppsala, Norbyvagen 22, S-752 36 Uppsala, Sweden
Get access Rights & Permissions [Opens in a new window]

Abstract

Cyclotron lapworthi (Groom, 1902), one of the few British Cambrian bradoriid ostracod species known from a large number of specimens, is redescribed. It has an interdorsum, thus indicating a hesslandonid affinity. The ontogeny of C. lapworthi does not demonstrate a clear distinction of its individual moult stages but does show marked changes in the development of nodes and lobes. C. lapworthi shows wide variation in carapace shape possibly indicating that its valves were thin and relatively flexible. In England and Canada C. lapworthi is restricted to the Upper Cambrian Olenus Zone. C. lapworthi may also occur coevally in the Upper Cambrian of Sweden.

Keywords

Ostracodaontogenybiostratigraphypalaeoecologytaxonomy
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 85 , Issue 2 , 1994 , pp. 123 - 130
Copyright
Copyright © Royal Society of Edinburgh 1994

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barrande, J. 1872. System Silurien du centre de la Boheme. 1, supp.. 1–647. Prague. Paris.Google Scholar
Bassler, R. S. & Kellett, B. 1934. Bibliographic index of Paleozoic Ostracoda. GEOL SOC AM SPEC PAP 1, 1–500.Google Scholar
Brasier, M. D.. Ingham, J. K. & Rushton, A. W. A. 1992. Cambrian. In Cope, J. C. W., Ingham, J. K. & Rawson, P. F. (Eds) Atlas of palaeogeography and lithofacies. GEOL SOC LONDON MEM 13, 13–18.Google Scholar
Briggs, D. E. G. 1983. Affinities and early evolution of the Crustacea: the evidence of the Cambrian fossils. In Schram, F. R. (Ed.) Crustacean Phytogeny, 1–22. Rotterdam: A. A. Balkema.Google Scholar
Cowie, J. W.. Rushton, A. W. A. & Stubblefield, C. J. 1972. A correlation of Cambrian rocks in the British Isles. GEOL SOC LONDON SPEC REP 2. 1–42.Google Scholar
Fortey, R. A. 1985. Pelagic trilobites as an example of deducing the life habits of extinct arthropods. TRANS R SOC EDINBURGH 76. 219–30.Google Scholar
Groom, T. 1898. The geological structure of the southern Malverns. and of the ancient district to the west. Q J GEOL SOC LONDON 54. 129–69.Google Scholar
Groom, T. 1902. On Polyphyma, a new genus belonging to the Leperditiade, from the Cambrian shales of Malvern. Q J GEOL SOC LONDON 58, 83–8.Google Scholar
Gründel, J. & Buchholz, A. 1981. Bradoriida aus kambrischen geschieben vom gebiet der nordlichen DDR. FREIBURGER FORSCH SER C 363, 57–73.Google Scholar
Hamm, H. 1881. Die Bryozoen des Mastrichter ober-Senon. Berlin.Google Scholar
Hinz, I. C. U. 1987. The Lower Cambrian microfauna of Comley and Rushton, Shropshire, England. PALAEONTOGRAPHICA A198, 41–100.Google Scholar
Hinz, I. C. U. 1992. On Monasterium oepiki Fleming. STEREO-ATLAS OSTRACOD SHELLS 19, 123–30.Google Scholar
Hinz-Schallreuter, I. C. U. 1993a. Ein mittelkambrischer hesslandonider ostrakod sowie zur morphologie und systematischen stellung der Archaeocopa. ARCHIV FUR GESCHIEBEK.UNDE 1, (6), 329–50.Google Scholar
Hinz-Schallreuter, I. C. U. 1993b. Cambrian ostracodes mainly from Baltoscandia and Morocco. ARCHIV FUR GESCHIEBEKUNDE 1,(7). 385–448.Google Scholar
Hinz, I. C. U. & Jones, P. J. 1992. On Tubupestis tuber Hinz & Jones gen. et sp. nov. STEREO-ATLAS OSTRACOD SHELLS 19, 9–12.Google Scholar
Jakovlev, V. E. 1877. Heteroptera from northern Russia. TRUDY RUSSK ENT OBSHCH 10, 67–98. (in Russian).Google Scholar
Jones, P. J. & McKenzie, K. G. 1980. Queensland middle Cambrian Bradoriida (Crustacea): new taxa, palaeobiogeography and biological affinities. ALCHERINGA 4, 203–25.Google Scholar
Kummerow, E. 1931. Über die unterschiede zwischen phyllocariden und ostracoden. CBL MINER GEOL PALAONT ABT B 1931, 242–57.Google Scholar
Lapworth, C. 1886. On the sequence and systematic position of the Cambrian rocks of Nuneaton. GEOL MAG 3, 319–22.Google Scholar
Lapworth, C. 1898. A sketch of the geology of the Birmingham district. PROC GEOL ASS 15, 313–416.Google Scholar
Linnarsson, J. G. O. 1875. Öfversigt af Nerikes öfvergangsbildningar. ÖFVERSIGT AF KONGLIGA VETENSKAPSAKADEMIENS FORHANDLINGAR 1875. 3–48.Google Scholar
Martin, F. & Dean, W. T. 1988. Middle and upper Cambrian Acritarch and Trilobite zonation at Manuels River and Random Island. Eastern Newfoundland. BULL GEOL SURV CAN 381. 1–91.Google Scholar
Müller, K. J. 1964. Ostracoda (Bradorina) mit phosphatischen Gehausen aus dem oberkambrium von Schweden. N JB GEOL PALAONT ABH 121, 1–46.Google Scholar
Müller, K. J. 1979. Phosphatocopine ostracodes with preserved appendages from the Cambrian of Sweden. LETHA1A 12 (1). 1–27.Google Scholar
Müller, K. J. 1982. Hesslandona unisulcata sp. nov. with phosphatized appendages from upper Cambrian 'orsten' of Sweden. In Bate, R. H., Robinson, E. & Sheppard, L. M. (Eds) Fossil and Recent Ostracoda, 276–307. Chichester: Ellis Horwood.Google Scholar
Müller, K. J. & Walossek, D. 1991. Ein Blick durch das OrstenFenster in die Arthropodenwelt vor 500 Millionen Jahren. VERH DTSCH ZOOL GES 84, 281–294.Google Scholar
Poulsen, C. 1923. Bornholms Olenuslag og deres fauna. DANMARKS GEOL UNDERS0GELSE 2, (40), 1–83.Google Scholar
Runnegar, B. & Bengtson, S. 1990. Origin of hard parts—early skeletal fossils. In Briggs, D. E. G. & Crowther, P. R. (Eds) Palaeobiology: A Synthesis, 24–49. Oxford: Blackwell.Google Scholar
Rushton, A. W. A. 1969. Cyclotron, a new name for Polyphyma Groom. GEOL MAG 106, 216–17.Google Scholar
Rushton, A. W. A. 1978. Fossils from the middle-upper Cambrian transition in the Nuneaton district. PALAEONTOLOGY 21 (2), 245–83.Google Scholar
Rushton, A. W. A. 1983. Trilobites from the upper Cambrian Olenus Zone in central England. In Briggs, D. E. G. & Lane, P. D. (Eds) Trilobites and other early arthropods: papers in honour of Professor H. B. Whittington, FRS. SPEC PAP PALAEONTOL 30, 107–39.Google Scholar
Rushton, A. W. A. & Siveter, David J. (in press). The Cambrian. In Athersuch, J., Keen, M. & Wilkinson, I. (Eds) A Stratigraphical Index of British Ostracoda. British Micropalaeontological Society Series.Google Scholar
Schrank, E. 1973. Fauna und kontakt Mittelkambrium/Oberkambrium in einem Geschiebe. Z GEOL WISS 22 (1), 85–99.Google Scholar
Scotese, C. R. & McKerrow, W. S. 1990. Revised world maps and introduction. In McKerrow, W. S. & Scotese, C. R. (Eds) Palaeozoic palaeogeography and biogeography. GEOL SOC LONDON MEM 12, 1–21.Google Scholar
Siveter, David J., Williams, M., Abushik, A. F., Berg-Madsen, V. & Melnikova, L. 1993. On Anabarochilina primordialis (Linnarsson). STEREO-ATLAS OSTRACOD SHELLS 20, 71–6.Google Scholar
Siveter, Derek J. 1990. Photography. In Briggs, D. E. G. & Crowther, P. R. (Eds), Palaeobiology: A Synthesis, 505–8. Oxford: Blackwell.Google Scholar
Spjeldnaes, N. 1966. N. P. Angelin's work on fossil ostracodes. GEOL FOREN FORHANDL STOCKHOLM 88, 407–9.CrossRefGoogle Scholar
Strahan, A. 1886. On the rocks surrounding the Warwickshire Coalfield, and on the base of the Coal-measures. GEOL MAG 3, 540–57.Google Scholar
Sylvester-Bradley, P. C. 1961. Archaeocopida. In Moore, R. C. (Ed) Treatise on Invertebrate Paleontology, Part Q, Arthropoda 3. Q100–105. Geological Society of America and University of Kansas Press.Google Scholar
Taylor, K. & Rushton, A. W. A. 1971. The pre-Westphalian geology of the Warwickshire coalfield, with an account of three boreholes in the Merevale area. BULL GEOL SURV GR BRIT 35, 1–152.Google Scholar
Ulrich, E. O. & Bassler, R. S. 1931. Cambrian bivalved Crustacea of the order Conchostraca. PROC US NAT MUS 78 (4), 1–130.Google Scholar
Westergåard, A. H. 1922. Sveriges Olenidskiffer. SVER GEOL UNDERS SER Ca 18, 1–205.Google Scholar
Westergård, A. H. 1947. Supplementary notes on the upper Cambrian trilobites of Sweden. SVER GEOL UNDERS SER C480, 1–35.Google Scholar
Zhang, Xi-guang & Pratt, B. R. 1993. Early Cambrian ostracode larvae with a univalved carapace. SCIENCE 262, 93–4.Google Scholar