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Tremadoc faunas from the Carmarthen district, South Wales

Published online by Cambridge University Press:  01 May 2009

R. M. Owens ,
R. A. Fortey ,
J. C. W. Cope ,
A. W. A. Rushton  and
M. G. Bassett
R. M. Owens
Affiliation:
Department of Geology, National Museum of Wales, Cardiff, CF1 3NP, U.K.
R. A. Fortey
Affiliation:
Department of Palaeontology, British Museum (Natural History), Cromwell Road, South Kensington, London SW7 5BD, U.K.
J. C. W. Cope
Affiliation:
Department of Geology, University College of Swansea, Singleton Park, Swansea SA2 8PP, U.K.
A. W. A. Rushton
Affiliation:
Institute of Geological Sciences, Exhibition Road, London SW7 2DE, U.K.
M. G. Bassett
Affiliation:
Department of Geology, National Museum of Wales, Cardiff, CF1 3NP, U.K.
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Summary

A diverse fauna of trilobites, graptolites, inarticulate brachiopods, sponges, and a worm is described from the Tremadoc rocks cropping out in the Llangynog district, SW of Carmarthen. It permits identification of the Clonograptus tenellus Zone and older Tremadoc strata; younger Tremadoc strata are apparently absent. The fauna shows closest affinities with the Shineton Shales of Shropshire, while some of the trilobites also indicate a close relationship with those from the Tremadoc of NW Argentina.

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Articles
Information
Geological Magazine , Volume 119 , Issue 1 , January 1982 , pp. 1 - 38
Copyright
Copyright © Cambridge University Press 1982

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References

Allen, P. M., Jackson, A. A. & Rushton, A. W. A. 1981. The stratigraphy of the Mawddach Group in the Cambrian succession of North Wales. Proc. Yorks. geol. Soc. 43, 295–329, pls 16, 17.CrossRefGoogle Scholar
Angelin, N. P. 1854. Palaeontologia Scandinavica. I, Crustacea Formationis transitionis. Fasc. 2, I–IX, 21–92, pls 25–41. Lund.Google Scholar
Barrande, J. 1868. Faune silurienne des environs de Hof, en Bavière. Bull. Soc. géol. Fr. Ser. 2, 26, 31–110, 1 pl.Google Scholar
Bassler, R. S. 1915. Bibliographic index of American Ordovician and Silurian fossils. Bull. U.S. natn. Mus. 92 (2), i–iv, 719–1521, 4 pls.Google Scholar
Biernat, G. 1973. Ordovician inarticulate brachiopods from Poland and Estonia. Palaeont. pol. 28, 1–120, 40 pls.Google Scholar
Biernat, G. & Williams, A. 1970. Ultrastructure of the protegulum of some acrotretide brachiopods. Palaeontology, 13, 491–502, pls 98–101.Google Scholar
Billings, E. 1862. Palaeozoic Fossils, volume 1. Containing descriptions and figures of new or little known species of organic remains from the Silurian rocks, pp. 57–168, June 1862 (advance sheets). Montreal: Geological Survey of Canada.Google Scholar
Brøgger, W. C. 1882. Die silurischen Etagen 2 und 3 in Kristianagebiet und auf Eker. Universitäts-program für 1882, 376 + viii pp., 12 pls. Kristiania (Oslo).Google Scholar
Bruguiére, J. G. 1797. Tableau encyclopédique et méthodique des trois régnes de la nature, 2, Vers, Coquilles, Mollusques et Polypiers. pls 190–286. Paris.Google Scholar
Bulman, O. M. B. 1941. Some dichograptids of the Tremadocian and Lower Ordovician. Ann. Mag. nat. Hist. (11), 7, 100–121, pl. 11.CrossRefGoogle Scholar
Bulman, O. M. B. 1950. Graptolites from the Dictyonema Shales of Quebec. Q. Jl geol. Soc. Lond. 106, 63–99, pls 4–8.CrossRefGoogle Scholar
Bulman, O. M. B. & Rushton, A. W. A. 1973. Tremadoc faunas from boreholes in Central England. Bull. geol. Surv. Gt Br. 43, 1–40, pls 1–7.Google Scholar
Burmeister, H. 1843. Die Organisation der Trilobiten, aus ihren lebenden Verwandten entwickelt; nebst einer systematischen übersicht aller zeither beschribenen Arten. 1–147, 6 pls. Berlin.CrossRefGoogle Scholar
Callaway, C. 1877. On a new area of Upper Cambrian rocks in south Shropshire, with description of a new fauna. Q. Jl geol. Soc. Lond. 33, 652–72, pl. 24.CrossRefGoogle Scholar
Cocks, L. R. M. 1978. A review of British Lower Palaeozoic brachiopods, including a synoptic revision of Davidson's Monograph. Palaeontogr. Soc. [Monogr.], 256 pp.Google Scholar
Cooper, G. A. 1956. Chazyan and related brachiopods. Smithson. misc. Collns 127, xvi + 1245 pp., 269 pls. (2 vols.)Google Scholar
Cope, J. C. W., Fortey, R. A. & Owens, R. M. 1978. Newly discovered Tremadoc rocks in the Carmarthen district, South Wales. Geol. Mag. 115, 195–8, 1 pl.CrossRefGoogle Scholar
Courtessole, R. & Pillet, J. 1975(a). Sur deux espèces nouvelles de trilobites du Trémadocien supérieur de la Montagne Noire. Bull. Soc. Etud. scient. Anjou, N.S. 9, 65–71, 1 pl.Google Scholar
Courtessole, R. & Pillet, J. 1975(b). Contribution à l'étude des faunes trilobitiques de l'Ordovicien inférieur de la Montagne Noire. Les Eulominae et les Nileidae. Annls Soc. géol. N. 95, 251–72, pls 24–27.Google Scholar
Davidson, T. 1866. A monograph of the British fossil Brachiopoda. Part VII, No. 1. The Silurian Brachiopoda. Palaeontogr. Soc. [Monogr.] 1–88, pls 1–12.Google Scholar
Davidson, T. 1868. On the earliest forms of Brachiopoda hitherto discovered in the British Palaeozoic rocks. Geol. Mag. (1) 5, 303–16, pls 15, 16.CrossRefGoogle Scholar
Dawson, J. W. & Hinde, J. G. 1889. New species of fossil sponges from the Siluro-Cambrian at Little Metis on the lower St. Lawrence. Trans. R. Soc. Can. 7, sect. 4, 31–55, pl. 3.Google Scholar
Eichwald, E. von 1829. Zoologia specialis, quam expositis animalibus tum vivis, tum fossilibus potissium Rossiae in universum et Poloniae in specie, etc. 1, 1–314, 5 pls. Vilnae.Google Scholar
Elles, G. L. & Wood, E. M. R. 1902. A monograph of British graptolites. Palaeontogr. Soc. [Monogr.] (2), 55–102, pls 5–13.Google Scholar
Erdtmann, B. -D. 1967. A new fauna of early Ordovician graptolites from St Michel, Quebec. Can. J. Earth Sci. 4, 335–55.CrossRefGoogle Scholar
Fortey, R. A. 1975. The Ordovician trilobites of Spitsbergen. II. Asaphidae, Nileidae, Raphiophoridae and Telephinidae of the Valhallfonna Formation. Skr. norsk Polarinst., Oslo 162, 1–179, 41 pls.Google Scholar
Fortey, R. A. & Owens, R. M. 1978. Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen district, south-west Wales. Bull. Br. Mus. nat. Hist. (Geol.) 30, 225–94, 11 pls.Google Scholar
Fortey, R. A. & Rushton, A. W. A. 1980. Acanthopleurella Groom 1902: origin and life-habits of a miniature trilobite. Bull. Br. Mus. nat. Hist. (Geol.) 33 (2), 79–89.Google Scholar
Hall, J. 1858. Descriptions of Canadian graptolites. Geol. Surv. Can. Rept for 1857, 111–145, pls 1–8.Google Scholar
Harrington, H. J. 1938. Sobre las faunas del Ordoviciano inferior del norte argentino. Museo de La Plata (Buenos Aires) Revista, n.s. 1, sección Paleont., 109–289, pls 1–14.Google Scholar
Harrington, H. J. & Leanza, A. F. 1952. La clasificación de los Olenidae y de los Ceratopygidae (Trilobita). Rev. Asoc. Geol. Arg. 7, 190–205, pl. 1.Google Scholar
Harrington, H. J. & Leanza, A. F. 1957. Ordovician trilobites of Argentina. Spec. Publ. Dept. Geol. Univ. Kans. 1, 1–276, 140 figs.Google Scholar
Henningsmoen, G. 1957. The trilobite family Olenidae. Skr. norske Vidensk-Akad., mat.-nat. Kl., Oslo, 1957, (1), 1–303, 31 pls.Google Scholar
Hintze, L. H. 1953. Lower Ordovician trilobites from western Utah and eastern Nevada. Bull. Utah geol. miner. Surv. 48, i–vi, 1–249, 28 pls.Google Scholar
Holl, H. B. 1865. On the geological structure of the Malvern Hills and adjacent districts. Q. Jl Geol. Soc. Lond. 21, 72–102.CrossRefGoogle Scholar
Horný, R. & Bastl, F. 1970. Type specimens of fossils in the National Museum, Prague, Volume 1, Trilobita. 1–354, 20 pls. National Museum, Prague.Google Scholar
Howell, B. F. 1944. The age of the sponge beds at Little Metis, Quebec. Bull. Wagner Free Inst. Sci. 19, 1–16, 1 pl.Google Scholar
Hutchinson, R. D. The stratigraphy and trilobite faunas of the Cambrian sedimentary rocks of Cape Breton Island, Nova Scotia. Mem. Geol. Surv. Canada no. 263, v + 124 pp., 7 pls, 2 maps.Google Scholar
Hutchison, R. & Ingham, J. K. 1967. New trilobites from the Tremadoc Series of Shropshire. Palaeontology 10, 47–59, pl. 8.Google Scholar
Hutt, J. E. 1974. The development of Clonograptus tenellus and Adelograptus hunnebergensis. Lethaia 7, 79–92.CrossRefGoogle Scholar
Jaekel, O. 1909. Über die Agnostiden. Z. dt. geol. Ges. 61, 380–401.Google Scholar
King, W. 1846. Remarks on certain genera belonging to the class Palliobranchiata. Ann. Mag. nat. Hist. 18, 26–42.CrossRefGoogle Scholar
Kobayashi, T. 1936. On the Parabolinella fauna from province Jujuy, Argentina. Jap. J. Geol. Geogr. 13, 85–102, 2 pls.Google Scholar
Kobayashi, T. 1937. The Cambro-Ordovician shelly faunas of South America. J. Fac. Sci. Tokyo Univ. 4, 369–522, pls 1–8.Google Scholar
Kobayashi, T. 1955. The Ordovician Fossils of the McKay Group in British Columbia, western Canada, with a note on the early Ordovician palaeogeography. J. Fac. Sci. Tokyo Univ. Ser. 2, 9, 355–493, pls 1–9.Google Scholar
Krause, F. F. & Rowell, A. J. 1975. Distributions and systematics of the inarticulate brachiopods of the Ordovician carbonate mud mound of Meiklejohn Peak, Nevada. Paleont. Contr. Univ. Kans. 61, 1–74, 12 pls.Google Scholar
Lake, P. 1907–42. A monograph of the British Cambrian trilobites. Palaeontogr. Soc. [Monogr.] (2): 29–48, pls 3, 4 (1907); (4): 65–88, pls 7–10 (1913); (5): 89–120, pls 11–14 (1919); (6): 121–148, pls 15–18 (1931); (12): 273–306, pls 40–43 (1940); (13): 307–332, pls 44–46 (1942).CrossRefGoogle Scholar
Lamarck, J. B. P. A. de M. de 1801. Système des Animaux sans vertébres. viii + 432 pp. Paris.Google Scholar
Lapworth, C. 1880. On new British graptolites. Ann. Mag. nat. Hist. (5) 5, 148–77.CrossRefGoogle Scholar
Linnarsson, J. G. O. 1869. Om Vestergötlands Cambriska och Siluriska aflagringar. K. svenska vetensk.-Akad. Handl. 8, (2), 1–89, pls 1, 2.Google Scholar
Linnarsson, J. G. O. 1871. Om n˚gra Försteningar från Sveriges och Norges Primordialzone. Ofvers. K. Vetensk Akad. Förh. Stockh., 1871, no. 6, 789–96, pl. 16.Google Scholar
Lisogor, K. A. 1961. Trilobites of the Tremadoc and adjacent strata of Kendyktas. Trud. Geol. Inst., SSSR, 18 (Ordovician of Kazakhstan IV), pp. 52–92, pls 1–4. [in Russian].Google Scholar
Lisogor, K. A. 1977. Tremadoc trilobites of Mali Karatai and the Kirgiz Mountain range. Ezheg. vses. paleont. Obshch. 20, 105–127. [In Russian].Google Scholar
Matthew, G. F. 1888. Illustrations of the fauna of the St John Group, No. IV. Part I. Description of a new species of Paradoxides (Paradoxides regina). Part II. The smaller trilobites with eyes (Ptychoparidae and Ellipsocephalidae). Proc. Trans. R. Soc. Can. 5, Section IV, 1887, 115–166, 3 pls.Google Scholar
Matthew, G. F. 1899. Preliminary notice of the Etcheminian fauna of Cape Breton. New Brunswick Nat. Hist. Soc. Bull. 4, 198–208, 4 pls.Google Scholar
Matthew, G. F. 1901. New species of Cambrian fossils from Cape Breton. Bull. Nat. Hist. Soc. New Brunswick 4, (4) (= no. 19), 269–86, pl. 5.Google Scholar
McCoy, F. 1851. On some new Cambro-Silurian fossils. Ann. Mag. nat. Hist. (2), 8, 387–409.CrossRefGoogle Scholar
Menke, C. T. 1828. Synopsis methodica molluscorum generum omnium et specierum earum quae in Museo Menkeano adservantur. 91 pp. Pyrmonti.CrossRefGoogle Scholar
Miller, S. A. 1889. North American geology and palaeontology. 664 pp. Cincinnati, Ohio: Western Methodist Book Concern.Google Scholar
Milne Edwards, H. 1840. Histoire naturelle des Crustacés, comprenant l'anatomie, la physiologie et la classification des animaux. 3. 638 pp. Paris.Google Scholar
Moberg, J. C. 1892. Om några nya graptoliter från Skånes Undre Graptolitskiffer. Geol. För. Stockh. Förh. 14, 339–50, pl. 8.CrossRefGoogle Scholar
Moberg, J. C. & Segerberg, C. O. 1906. Bidrag till kännedomen om Ceratopygeregionen med särskild hänsyn till dess utveckling i fogelsångstrakten. Lunds Univ. Årsskr., N.F., Afd. 2, 2, 1–113, 7 pls. (Aftryck ur Kongl. Fysiografiska Sällskapets Handlingar, N.F. 17 (7)).Google Scholar
Moore, R. C. (Ed.). 1959. Treatise on Invertebrate Paleontology. O (Arthropoda I). xix + 560 pp., 415 figs. Lawrence, Kansas.Google Scholar
Murchison, R. I. 1859. Siluria. The History of the Oldest Fossiliferous Rocks and their Foundations; with a Brief Sketch of the Distribution of Gold over the Earth. 3rd ed., xx + 592 pp., 41 pls.Google Scholar
Neben, W. & Kreuger, H. H. 1971. Fossilien ordovicischer Geschiebe. Staringia, no. 1, 58 pp., 50 pls.Google Scholar
Nicholson, H. A. 1873. On some fossils from the Quebec Group of Point Lévis, Quebec. Ann. Mag. nat. Hist., (4) 11, 133–43.CrossRefGoogle Scholar
Pek, I. 1977. Agnostid trilobites of the central Bohemian Ordovician. Sb. geol. Ved. Praha, Rada P, Palaeontologie, 19, 7–44, 12 pls.Google Scholar
Prantl, F. & Přibyl, A. 1949. Study of the genus Barrandia McCoy (Trilobitae). Bull. int. Acad. tchèque Sci. 49, 5 (for 1948), 1–17, pls 1, 2.Google Scholar
Ramsay, A. C. 1866. The geology of North Wales. Mem. geol. Surv. G.B. 3, viii + 381 pp., 28 pls.Google Scholar
Rasetti, F. 1954. Early Ordovician trilobite faunules from Quebec and Newfoundland. J. Paleont. 28, 581–7, pls 60, 61.Google Scholar
Reed, F. R. C. 1931. A review of the British species of the Asaphidae. Ann. Mag. nat. Hist., London (10) 7, 441–72.CrossRefGoogle Scholar
Rowell, A. J. 1965. Inarticulata. H260–297. In Treatise on Invertebrate Paleontology. H (Brachiopoda). (ed. Moore, R. C.) xxxii + 927 pp., 746 figs, (in 2 vols.). Lawrence, Kansas.Google Scholar
Rowell, A. J. 1966. Revision of some Cambrian and Ordovician inarticulate brachiopods. Paleont. Contr. Univ. Kansas 7, 1–36, 4 pls.Google Scholar
Rushton, A. W. A. & Phillips, W. E. A. 1973. A Protospongia from the Dalradian of Clare Island, Co. Mayo, Ireland. Palaeontology 16, 231–7, pl. 23.Google Scholar
Růžička, R. 1926. Faune des couches à Euloma du gisement ferrugineux près de Holoubkov (à Ouzky). lère partie (Trilobites). Bull. int. Acad. Sci. Boh. 35, 1–24, pls 1–3.Google Scholar
Růžička, R. 1931. Doplňky k fauně vrstev Eulomových rudniho ložiska u Holoubkova (v Ouzkém). Véstn. stát. geol. Úst. ČSR 7, 1–20, pl. 1.Google Scholar
Salter, J. W. 1866. Appendix. On the fossils of North Wales. In Ramsay, A. C. q.v.Google Scholar
Salter, J. W. 1873. A catalogue of the collection of Cambrian and Silurian fossils contained in the geological museum of the University of Cambridge, xlviii + 204 pp. Cambridge.Google Scholar
Schuchert, C. 1893. A classification of the Brachiopoda. Am. Geologist, 11, 141–67.Google Scholar
Sdzuy, K. 1955. Die Fauna der Leimitz-Schiefer (Tremadoc). Abh. senckenberg. naturforsch. Ges. 492, 1–74, 8 pls.Google Scholar
Sdzuy, K. 1958. Fossilien aus dem Tremadoc der Montagne Noire. Senckenberg. leth. 39, 255–85, 3 pls.Google Scholar
Shergold, J. H. 1971. Late Upper Cambrian trilobites from the Gola Beds, western Queensland. Bull. Bur. Miner. Resour. Geol. Geophys. Aust. 112, 1–127, 19 pls.Google Scholar
Shergold, J. H. 1975. Late Cambrian and early Ordovician trilobites from the Burke River Structural Belt, Western Queensland, Australia. Bull. Bur. Miner. Resour. Geol. Geophys. Aust. 153, 1–251, 58 pls.Google Scholar
Shergold, J. H. 1977. Classification of the trilobite Pseudagnostus. Palaeontology 20, 69–100, pls 15, 16.Google Scholar
Smith, S. 1933. On the occurrence of Tremadoc Shales in the Tortworth Inlier (Gloucestershire). With notes on the fossils by C. J. Stubblefield. Q. Jl geol. Soc. Lond. 89, 357–78, pl. 34.CrossRefGoogle Scholar
Strachan, I. 1981. A synoptic supplement to ‘A monograph of British graptolites by Miss G. L. Elles and Miss E. M. R. Wood’. Palaeontogr. Soc. [Mongr.], 130 pp.Google Scholar
Strachan, A., Cantrill, T. C., Dixon, E. E. L. & Thomas, H. H. 1909. The geology of the South Wales Coalfield. Part X. The country around Carmarthen (Sheet 229). Mem. Geol. Surv. U.K., London. viii + 177 pp.Google Scholar
Stubblefield, C. J. 1926. Notes on the development of a trilobite, Shumardia pusilla (Sars). J. Linn. Soc. (Zool.) 36, 345–72, pls 14–16.CrossRefGoogle Scholar
Stubblefield, C. J. 1929. Notes on some early British graptolites. Geol. Mag. 66, 268–85.CrossRefGoogle Scholar
Stubblefield, C. J. & Bulman, O. M. B. 1927. The Shineton Shales of the Wrekin district: with notes on their development in other parts of Shropshire and Herefordshire. Q. Jl geol. Soc. Lond. 83, 96–146, pls 3–5.CrossRefGoogle Scholar
Tjernvik, T. 1958. The Tremadocian beds at Flagabro in south-eastern Scania (Sweden). Geol. Fören. Stockh. Förh. 80, 259–76, pl. 3.CrossRefGoogle Scholar
Tomczykowa, E. 1968. Stratigraphy of the uppermost Cambrian deposits in the Swiçtokrzyskie mountains. Pr. geol. Kom. Nauk. geol. 54, 1–85, 3 pls.Google Scholar
Vaněk, J. 1965. Die Trilobiten des Mittelböhmischen Tremadoc. Senckenberg. leth. 46, 263–308, pls 23–6.Google Scholar
Vogdes, A. W. 1925. Paleozoic Crustacea. Part II. An alphabetical list of the genera and subgenera of the Trilobita. Trans. S. Diego Soc. nat. Hist. 4, 87–115.Google Scholar
Waern, B. 1953. Palaeontology and stratigraphy of the Cambrian and lowermost Ordovician of the Bödahamn Core. Bull. Geol. Instn Univ. Upsala 34, 223–50, pl. 1.Google Scholar
Walcott, C. D. 1902. Cambrian Brachiopoda: Acrotreta; Linnarssonella; Obolus; with descriptions of new species. Proc. U.S. natn. Mus. 25, 577–612.CrossRefGoogle Scholar
Walcott, C. D. 1908. Cambrian geology and palaeontology. 4. Classification and terminology of the Cambrian brachiopoda. Smithsonian Misc. Coll. 53, 4, 138–65, pls 11, 12.Google Scholar
Walcott, C. D. 1912. Cambrian Brachiopoda. Monogr. U.S. geol. Surv. 51, 1–872, 104 pls, [2 vols].Google Scholar
Westergård, A. H. 1909. Studier öfver Dictyograptusskiffern och dess Gränslager med sarskild hansyn till i Skåne Forekommande Bildningar. Lunds Univ. Årsskr., N.F., Afd. 2, 5 (3), 1–79, 5 pls.Google Scholar
Whitehouse, F. W. 1936. The Cambrian faunas of northeastern Australia. Part 1, Stratigraphical outline; part 2, Trilobita (Miomera). Mem. Qd Mus. 11, 59–112, pls 8–10.Google Scholar
Whittard, W. F. 1953. Palaeoscolex piscatorum gen. et. sp. nov., a worm from the Tremadocian of Shropshire. Q. Jl geol. Soc. Lond. 109, 125–35, pls 4, 5.CrossRefGoogle Scholar
Whittington, H. B. & Hughes, C. P. 1974. Geography and faunal provinces in the Tremadoc Epoch. Soc. Ec. Pal. & Min. Spec. Pub. 21, 203–18.Google Scholar
Whitworth, P. H. 1969. The Tremadoc trilobite Pseudokainella impar (Salter). Palaeontology 12, 406–13, pl. 75.Google Scholar
Williams, A.. 1965. Treatise on Invertebrate Palaeontology. Part H, Brachiopoda. xxxii + 927 pp. (2 vols.) Geol. Soc. Amer. & Univ. Kansas Press.Google Scholar