An atypical Silurian myodocope ostracod from the Armorican Massif, France

• Autorzy: Perrier V.
• Języki publikacji: EN

Abstrakty

EN

A new myodocope ostracod Sineruga insolita gen. et sp. nov. is herein described from the Armorican Massif (France). Sineruga resembles Silurian myodocopes (i.e., bolbozoids and cypridinids) in having anterior features (thinner carapace) possibly related to vision. On the other hand, it resembles entomozoid ostracods in having a bean−shaped outline along with a deep adductorial sulcus and a simple muscle spot, but lacks their characteristic ribbed ornament. The data available suggest that Sineruga insolita was probably an atypical, non−ribbed member of the entomozoids thus indicating that early entomozoids may have had smooth representatives. Comparisons with other Recent and fossils ostracods show that the presence of a rostrum and/or symmetrical vision related carapace features (i.e., indicating lateral eyes) can be used as diagnostic characters for myodocope ostracods. The position and shape of the dorsal connection and to a lesser extent that of the sulcus and the adductorial muscle scar can be used to discriminate the higher groups of Silurian myodocopes (bolbozoids, cypridinids, and entomozoids).

Słowa kluczowe

EN

Silurian; paleontology; myodocope ostracod; ostracod; Armorican Massif; France; Arthropoda; Crustacea; Ostracoda; Myodocopa; Entomozoidae; taxonomy

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2012
• Tom: 57
• Numer: 2
• Opis fizyczny: p.363-373,fig.,ref.

Twórcy

autor

Perrier V.

• Department of Geology, Institute of Ecology and Earth Sciences, University of Tartu, Ravila 14A, 50411 Tartu, Estonia

Bibliografia

• Barrande, J. 1872. Système Silurien du centre de la Bohême, Première partie: recherches paléontologiques. 647 pp. Prague.
• Bouček, B. 1936. Die Ostracoden des böhmischen Ludlows (Stufe eß). Neues Jahrbuch für Mineralogie Geologie und Paläontologie, Abteilung B 76: 31–98.
• Benson, R.H., Berdan, J.M., van den Bold, W.A., Hanai, T., Hessland, I., Howe, H.V., Kesling, R.V., Levinson, S.A., Reyment, R.A., Moore, R.C., Scott, H.W., Shaver, R.H., Sohn, I.G., Stover, L.E., Swain, F.M., and Sylvester−Bradley, P.C. 1961. Systematic descriptions. In: R.C. Moore (ed.), Treatise of Invertebrate Palaeontology, Part Q Arthropoda 3, Crustacea, Ostracoda, 99–421. Geological Society of America and University of Kansas Press, Boulder.
• Canavari, M. 1900. Fauna dei calcari nerastri con Cardiola ed Orthoceras di Xea San Antonio in Sardegna. Palaeontographia Italica 5 (for 1899): 187–210.
• Cohen, A.C., Peterson, D.E., and Maddocks, R.F. 2007. Ostracoda. In: T.C. James (ed.), The Light & Smith Manual: Intertidal Invertebrates from Central California to Oregon, Fourth Edition, 417–446. University of California Press, Berkeley.
• Gooday, A.J. 1983. Entomozoacean Ostracods from the Lower Carboniferous of South Western England. Palaeontology 26: 755–788.
• Gnoli, M., Perrier, V., and Serventi, P. 2009. The state of research on Sardinian Silurian Crustacea. In: C. Corradini, A. Ferretti, and P. Storch (eds.), the Silurian of Sardinia. Rendiconti della Societa Paleontologica Italiana 3 (1): 143–155.
• Groos−Uffenorde, H. and Schindler, E. 1990. The effect of global events on entomozoacean Ostracoda. In: R. Whatley and C. Maybury (eds.), Ostracoda and Global Events, 101–112. British Micropalaeontological Society Publications Series, Special Publications, Chapman and Hall, London.
• Gründel, J. 1969. Neue taxonomische Einheiten der Unterklasse Ostracoda (Crustacea). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1969 (6): 353–361.
• Guiller, A. 1896. Géologie du département de la Sarthe. 442 pp. Typographie Edmond Monnoyer, Le Mans.
• Guiller, A. and De Tromelin, G. 1874. Note sur le terrain silurien de la Sarthe. Bulletin de la Société d'Agriculture Sciences Arts de la Sarthe 22: 585–594.
• Horne, D.J., Cohen A.C., and Martens, K. 2002. Taxonomy, morphology and biology of Quaternary and living Ostracoda. In: J.A. Holmes and A.R. Chivas (eds.), The Ostracoda: Applications in Quaternary Research. American Geophysical Union, Geophysical Monographs 131: 5–36.
• Jones, T.R. 1861. Entomis. In: H.H. Howell and A. Geikie (eds.), The Geology of the Neighbourhood of Edinburgh. Memoir of the Geological Survey of Great Britain 32: 137.
• Jones, T.R. 1873. Notes on the Palaeozoic bivalved Entomostraca N° 10; Entomis and Entomidella. Annals and Magazine of Natural History 11 (4): 413–417.
• Kornicker, L.S. 1969. Relationship between the free and attached margins of myodocopid ostracod shell. In: J.W. Neal (ed.), The Taxonomy, Morphology and Ecology of Recent Ostracoda, 109–135. Oliver and Boyd, Edinburgh.
• Land, M.F. and Nilsson, D.E. 1990. Observations on the compound eyes of the deep−sea ostracod Macrocypridina castanea. Journal of Experimental Biology 148: 221–233.
• Latreille, P.A. 1802. Histoire naturelle générale et particulière des Crustacés et des Insectes, 3.Familles naturelles des genres. 467 pp. Dufaux, Paris.
• Olempska, E. 2002. Ontogeny and sexual dimorphism in the Middle / Late Devonian rhomboentomozoid ostracod Franklinella. Journal of Micropalaeontology 21: 9–16.
• Paris, F. 1977. Les formations siluriennes du synclinorium du Ménez−Bélair; Comparaison avec d'autres formations siluriennes du Massif armoricain. Bulletin du Bureau de recherche géologique et minière 1 (2): 75–87.
• Paris, F. 1981. Les Chitinozoaires dans le Paléozoïque du sud−ouest de l’Europe (cadre géologique−étude systématique−biostratigraphie). Mémoires de la Société géologique et minéralogique de Bretagne 26: 1–412.
• Perrier, V. 2007. Biodiversité et écologie des ostracodes myodocopes (Crustacea) du Silurien supérieur d’Europe, 2 Volumes. 534 pp. Unpublished Ph.D. thesis, Université Lyon 1, UMR 5125 CNRS, Lyon.
• Perrier, V., Vannier, J.M.C., and Siveter, D.J. 2007. The Silurian pelagic myodocope ostracod Richteria migrans. Transaction of the Royal Society of Edinburgh, Earth Sciences 98: 151–163.
• Perrier, V., Vannier, J., and Siveter, D.J. 2011. Silurian bolbozoids and cypridinids (Myodocopa) from Europe: pioneer pelagic ostracods. Palaeontology 54: 1361–1391.
• Přibyl, A. 1950. On the Bohemian Ostracoda of the families Entomozoidae and Entomoconchidae. Bulletin international de l'Académie tchèque des Sciences for 1949: 1–18.
• Racheboeuf, P.R. 1994. Silurian and Devonian phyllocarid crustaceans from the Massif Armoricain, NW France. Revue de Paléobiologie 13: 281–305.
• Robardet, M. 1981. Evolution géodynamique du nord−est du Massif armoricain au Paléozoïque. Mémoires de la Société géologique et minéralogique de Bretagne 20: 1–342.
• Sadler, P.M., Cooper, R.A., and Melchin, M. 2009. High resolution, early Paleozoic (Ordovician–Silurian) time scales. Geological Society of America Bulletin 121: 887–906.
• Sars, G.O. 1866. Oversigt af Norges marine Ostracoder. Forhandlinger i Videnskabs−Selskabet I Christiania (for 1865): 1–130.
• Scott, H.W. 1961. Shell morphology of Ostracoda. In: R.C. Moore (ed.), Treatise of Invertebrate Palaeontology, Part Q Arthropoda 3, Crustacea, Ostracoda, 21–37. Geological Society of America and University of Kansas Press, Boulder.
• Siveter, D.J. 1984. Habitats and modes of life of Silurian ostracods. In: M.G. Bassett and J.D. Lawson (eds.), The Autecology of Silurian Organisms. Special Papers in Palaeontology 32: 71–85.
• Siveter, D.J. and Vannier, J.M.C. 1990. The Silurian myodocope ostracode Entomozoe from the Pentland Hills, Scotland, its taxonomic, ecological and phylogenetic significance and the affinity of bolbozoid myodocopes. Transactions of the Royal Society of Edinburgh, Earth Sciences 81: 45–67.
• Siveter, D.J., Vannier, J.M.C., and Palmer, D. 1987. Silurian myodocopid ostracodes, their depositional environments and the origin of their shell microstructures. Palaeontology 30: 783–813.
• Siveter, D.J., Vannier, J.M.C., and Palmer, D. 1991. Silurian Myodocopes, Pioneer pelagic ostracods and the chronology of an ecological shift. Journal of Micropalaeontology 10: 151–173.
• Siveter, D.J., Sutton, M.D., Briggs, D.E.G., and Siveter, D.J. 2003. An Ostracod Crustacean with Soft Parts from the Lower Silurian. Science 302: 1749–1751.
• Siveter, D.J., Siveter, D.J., Sutton, M.D., and Briggs, D.E.G. 2007. Brood care in Silurian ostracod. Proceedings of the Royal Society Series B: Biological Sciences 274: 465–469.
• Siveter, D.J., Briggs, D.E.G., Siveter, D.J., and Sutton, M.D. 2010. An exceptionally preserved myodocopid ostracod from the Silurian of Herefordshire, UK. Proceedings of the Royal Society Series B: Biological Sciences 277: 1539–1544.
• Tanaka, G., Siveter, D.J., and Parker, A.R. 2009. The visual system and paleoecology of the Silurian ostracod Primitiopsis planifrons. Journal of Paleontology 83: 414–421.
• Vannier, J.M.C. and Abe, K. 1992. Recent and early Palaeozoic myodocope ostracodes, functional morphology, phylogeny, distribution and lifestyles. Palaeontology 35: 485–517.
• Vannier, J.M.C. and Abe, K. 1993, Functional morphology and behaviour of Vargula hilgendorfii(Ostracoda: Myodocopida) from Japan, and discussion of its crustacean ectoparasites: preliminary results from video recordings. Journal of Crustacean Biology 13: 51–76.
• Vannier, J.M.C., Abe, K., and Ikuta, K. 1998. Feeding in myodocopid ostracods: Functional morphology and laboratory observations from videos. Marine Biology 132: 391–408.
• Vannier, J.M.C. and Chen, J.−Y. 2000. The Early Cambrian colonization of pelagic niches exemplified by Isoxys (Arthropoda). Lethaia 33: 295–311.