Hostname: page-component-76fb5796d-vfjqv Total loading time: 0 Render date: 2024-04-25T15:59:07.425Z Has data issue: false hasContentIssue false
  • English
  • Français

The ontogeny and systematics of the otarionine trilobite Otarionella from the Devonian of the Montagne Noire, France and the Maider, Morocco

Published online by Cambridge University Press:  13 September 2007

RUDY LEROSEY-AUBRIL ,
RAIMUND FEIST  and
BRIAN D. E. CHATTERTON
RUDY LEROSEY-AUBRIL
Affiliation:
Laboratoire Magmas et Volcans, Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France
RAIMUND FEIST*
Affiliation:
Laboratoire de Paléontologie, Institut des Sciences de l'Evolution, Université Montpellier II, Cc 062, Place E. Bataillon, 34095 Montpellier Cedex 05, France
BRIAN D. E. CHATTERTON
Affiliation:
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
*
†Author for correspondence: rfeist@isem.univ-montp2.fr
Get access Rights & Permissions [Opens in a new window]

Abstract

A new otarionine trilobite Otarionella rastrum sp. nov., from the late Emsian Mont Peyroux Formation (Montagne Noire, France), is described. Silicified remains, recovered from the underlying Bissounel Formation (early to late Emsian), are also attributed to this new species. These isolated silicified sclerites represent metaprotaspid to young holaspid growth stages, which enables the almost complete ontogeny of an otarionine trilobite with a spinose adult morphology to be described for the first time. Comparison with associated larval and juvenile growth stages of Cyphaspis reveal that the pattern of juvenile cranidial spine distribution in Otarionella rastrum sp. nov. differs from all patterns described so far in the Otarioninae, in particular that characterizing the tribe Otarionini. A second species, Otarionella lkomalii sp. nov., known only from a complete articulated specimen discovered in the early Eifelian of southern Morocco, is also described. Like the middle Eifelian Otarionella chamaeleo (Basse, 1997), this new species has only ten thoracic segments, with the fourth and the sixth segments each bearing a long axial spine. In the light of the new elements provided by the ontogenetic sequence of O. rastrum sp. nov. and the adult specimens of this species and O. lkomalii sp. nov., the putative synonymy of Otarionella and Otarion is rejected and a restricted concept of the genus Otarionella is defined.

Keywords

TrilobitaDevonianontogenysystematicsevolution
Type
Original Article
Information
Geological Magazine , Volume 145 , Issue 1 , January 2008 , pp. 55 - 71
Copyright
Copyright © Cambridge University Press 2007

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

Adrain, J. M. & Chatterton, B. D. E. 1994. The aulacopleurid trilobite Otarion, with new species from the Silurian of Northwestern Canada. Journal of Paleontology 68, 305–23.CrossRefGoogle Scholar
Adrain, J. M. & Chatterton, B. D. E. 1995. The otarionine trilobites Harpidella and Maurotarion, with species from Northwestern Canada, the United States, and Australia. Journal of Paleontology 69, 307–26.CrossRefGoogle Scholar
Adrain, J. M. & Chatterton, B. D. E. 1996. The otarionine trilobite Cyphaspis, with new species from the Silurian of Northwestern Canada. Journal of Paleontology 70, 100–10.CrossRefGoogle Scholar
Alberti, G. K. B. 1967. Neue obersilurische sowie unter- und mitteldevonische Trilobiten aus Marokko, Deutschland und einigen anderen europäischen Gebieten. 2. Senckenbergiana lethaea 48, 481–509.Google Scholar
Alberti, G. K. B. 1969. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons. I. Mit Beiträgen zur Silur-Devon-Stratigraphie einiger Gebiete Marokkos und Oberfrankens. Abhandlungen der Senckenbergischen naturforschenden Gesellschaft 520, 1–692.Google Scholar
Alberti, G. K. B. 1970. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons. II. Abhandlungen der Senckenbergischen naturforschenden Gesellschaft 525, 1–233.Google Scholar
Alberti, G. K. B. 1983. Trilobiten des jüngeren Siluriums sowie des Unter- und Mitteldevons. IV. Senckenbergiana lethaea 64, 1–87.Google Scholar
Angelin, N. P. 1854. Palaeontologia Scandinavica. I. Crustacea formationis transitionis. Fasc. 2, I–IX, 21–92, Lund.Google Scholar
Barrande, J. 1852. Système Silurien du centre de la Bohême. Recherches paléontologiques. I. Crustacés, Trilobites. Prague and Paris: 935 pp.CrossRefGoogle Scholar
Barrande, J. 1872. Système Silurien du centre de la Bohême. I ère partie. Recherches paléontologiques. I. Suppléments, Trilobites. Prague and Paris: 647 pp.Google Scholar
Basse, M. 1997. Trilobiten aus mittlerem Devon des Rhenohercynicums: II. Proetida (2), Ptychopariida, Phacopida (1). Palaeontographica (A) 246, 53–142.CrossRefGoogle Scholar
Bigey, F. & Feist, R. 1976. Cryptostomata (Bryozoaires) des ‘Calcaires à polypiers siliceux’ (Dévonien inférieur de la Montagne Noire, France méridionale): note préliminaire. Documents du Laboratoire de Geologie de la Faculté des Sciences de Lyon, ‘Bryozoa 1974’ 2, 257–71.Google Scholar
Brezinski, D. K. 1988. Revision and redescription of some Lower Mississippian trilobites from the Chouteau Formation (Kinderhookian) of central Missouri. Journal of Paleontology 62, 103–10.CrossRefGoogle Scholar
Burmeister, H. 1843. Die Organisation der Trilobiten, aus ihren lebenden Verwandten entwickelt; nebst einer systematischen Übersicht aller seither beschriebenen Arten. Berlin: Reimer, 147 pp.CrossRefGoogle Scholar
Chatterton, B. D. E., Johnson, B. D. & Campbell, K. S. W. 1979. Silicified Lower Devonian trilobites from New South Wales. Palaeontology 22, 799–837.Google Scholar
Cooper, G. A. & Williams, J. S. 1935. Tully Formation of New York. Bulletin of the Geological Society of America 46, 781–868.CrossRefGoogle Scholar
Ellermann, I. 1992. Trilobiten aus dem Unterdevon der Karnischen Alpen. Palaeontographica (A) 221, 1–62.Google Scholar
Erben, H. K. 1952. Trilobiten aus dem Älteren Hercyn (Unterdevon) des Unterharzes. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 94, 150–362.Google Scholar
Feist, R. 1970 a. Breviscutellum (Meridioscutellum) n. sg. et son développement larvaire. Geobios 4 (3), 41–73.CrossRefGoogle Scholar
Feist, R. 1970 b. Mise en évidence de l'Emsien inférieur (Dévonien inférieur) dans la Montagne Noire. Compte Rendu Sommaire de la Société Géologique de France 6, 199.Google Scholar
Feist, R. 1985. Devonian stratigraphy of the southeastern Montagne Noire (France). Courier Forschungs-Institut Senckenberg 75, 331–52.Google Scholar
Feist, R. & Groos-Uffenorde, H. 1979. Die ‘Calcaires à polypiers siliceux’ und ihre Ostracoden-Faunen (Oberes Unter-Devon; Montagne Noire, S-Frankreich). Senckenbergiana lethaea 60, 83–187.Google Scholar
Feist, R., Schönlaub, H.-P. & Bultynck, P. 1985. Faciès et biostratigraphie (Conodontes) du passage Dévonien inférieur-moyen dans la Montagne Noire (France). Hercynica 1 (2), 81–97.Google Scholar
Fortey, R. A. & Clarkson, E. N. K. 1976. The function of the glabellar “tubercle” in Nileus and other trilobites. Lethaia 9, 101–6.CrossRefGoogle Scholar
Fortey, R. A. & Owens, R. M. 1975. Proetida – a new order of trilobites. Fossils and Strata 4, 227–39.CrossRefGoogle Scholar
Goldfuss, A. 1843. Systematische Übersicht der Trilobiten und Beschreibung einiger neuen Arten derselben. Neues Jahrbuch fur Mineralogie (for 1843), 537–76.Google Scholar
Hall, J. & Clarke, J. M. 1888. Trilobites and other Crustacea of the Oriskany, Upper Helderberg, Hamilton, Portage, Chemung and Catskill Groups. Geological Survey of the State of New York, Paleontology 7, I–LXIV, 1–236.Google Scholar
Hammann, W. & Rabano, I. 1987. Morphologie und Lebensweise der Gattung Selenopeltis (Trilobita) und ihre Vorkommen im Ordovizium von Spanien. Senckenbergiana lethaea 68, 91–137.Google Scholar
Hollard, H. 1974. Recherches sur la stratigraphie des formations du Dévonien moyen, de l'Emsien supérieur au Frasnien, dans le Sud du Tafilalt et dans le Ma'der (Anti-Atlas oriental). Notes du Service Géologique du Maroc 36 (264), 7–68.Google Scholar
Hollard, H. 1981. Tableaux de corrélations du Silurien et du Dévonien de l'Anti-Atlas. Notes du Service Géologique du Maroc 42 (308), 1–23.Google Scholar
Kaufmann, B. 1998. Facies, stratigraphy and diagenesis of Middle Devonian reef- and mud-mounds in the Mader (eastern Anti-Atlas, Morocco). Acta Geologica Polonica 48, 43–106.Google Scholar
Lerosey-Aubril, R. 2007. Early Devonian calymenid larvae (Trilobita) from the Bissounel Formation (Montagne Noire, France). Bulletin de la Société Géologique de France 178, 197–200.CrossRefGoogle Scholar
Lütke, F. 1961. Das Alter des Lauterberger (Schönauer) Kalkes (Unterdevon) der Rothäuser Klippe bei Bad Lauterberg (Harz). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte, 124–40.Google Scholar
Lütke, F. 1965. Zur Kenntnis herzynischer Trilobiten aus dem Unter- und Mitteldevon des Harzes. Palaeontographica (A) 124, 151–236.Google Scholar
Lütke, F. 1980. Zur Evolution der altpaläozoischen Proetina (Trilobita). Senckenbergiana lethaea 61, 73–144.Google Scholar
M'Coy, F. 1849. On the classification of some British fossil Crustacea, with notices of new forms in the University collection at Cambridge. Annals and Magazine of Natural History, series 2, 4, 161–79, 330–5, 392–414.CrossRefGoogle Scholar
Prantl, F. & Přibyl, A. 1950. Revise čeledi Otarionidae R. & E. Richter, 1926 z českého siluru et devonu (Trilobitae). Sborník Ústredni ústavu geologický 15, 353–512.Google Scholar
Přibyl, A. 1947. Two new Otarionidae from the Devonian of Bohemia. Věstník královské české společnosti nauk 1946, 1–12.Google Scholar
Přibyl, A. & Vaněk, J. 1981. Studie zur Morphologie und Phylogenie der Familie Otarionidae R. & E. Richter, 1926 (Trilobita). Palaeontographica (A) 173, 160–208.Google Scholar
Richter, R. & Richter, E. 1926. Die Trilobiten des Oberdevon. Beiträge zur Kenntnis devonischer Trilobiten. IV. Abhandlungen der preussischen geologischen Landes-Anstalt 99, 1–314.Google Scholar
Richter, R. & Richter, E. 1939. Über Namuropyge n. g. und die Basisolution der Trilobiten-Glatze. Bulletin du Musée Royal d'Histoire Naturelle de Belgique 15, 1–19.Google Scholar
Schraut, G. 2000. Eine neue Otarion-Art (Trilobita, Arthropoda) aus dem Greifensteiner Kalk (unteres Mittel-Devon, Unter-Eifelium) von Greifenstein bei Herborn (Hessen, Deutschland). Paläontologische Zeitschrift 74, 305–16.CrossRefGoogle Scholar
Størmer, L. 1980. Sculpture and microstructure of the exoskeleton in chasmopinid and phacopid trilobites. Palaeontology 23, 237–71.Google Scholar
Thomas, A. T. & Owens, R. M. 1978. A review of the trilobite family Aulacopleuridae. Palaeontology 21, 65–81.Google Scholar
Weyer, D. 1965. Etroeungt im Morvan (Zentralfrankreich). Mitteilungen des Zentralen Geologischen Instituts 1, 289–302.Google Scholar
Whittington, H. B. 1956 a. Silicified Middle Ordovician trilobites: the Odontopleuridae. Bulletin of the Museum of Comparative Zoology at Harvard College 114 (5), 155–288.Google Scholar
Whittington, H. B. 1956 b. Type and other species of Odontopleuridae (Trilobita). Journal of Paleontology 30, 504–20.Google Scholar
Whittington, H. B., Chatterton, B. D. E., Speyer, S. E., Fortey, R. A., Owens, R. M., Chang, W. T., Dean, W. T., Fortey, R. A., Jell, P. A., Laurie, J. R., Palmer, A. R., Repina, L. N., Rushton, A. W. A., Shergold, J. H., Clarkson, E. N. K., Wilmot, N. V. & Kelly, S. R. A. 1997. Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, Revised (ed. Kaessler, R. L.). Boulder, Colorado: Geological Society of America and University of Kansas Press.Google Scholar
Whittington, H. B. & Evitt, W. R. 1954. Silicified Middle Ordovician trilobites. Geological Society of America, Memoirs 59, 1–137.Google Scholar
Whittington, H. B. & Wilmot, N. V. 1997. Microstructure and sculpture of the exoskeletal cuticle. In Treatise on Invertebrate Paleontology, Part O, Arthropoda 1, Trilobita, Revised (ed. Kaessler, R. L.), pp. 74–84. Boulder, Colorado: Geological Society of America and University of Kansas Press.Google Scholar
Wilmot, N. V. 1991. Sensory field maps of proetide trilobites. Transactions of the Royal Society of Edinburgh: Earth Sciences 82, 183–93.CrossRefGoogle Scholar
Zenker, J. C. 1833. Beiträge zur Naturgeschichte der Urwelt. Organische Reste (Petrefacten) aus der Altenburger Braunkohlen-Formation des Blankenburger Quadersandstein, Jenaischen bunten Sandstein und Böhmischen Übergangsgebirges. Jena: 67 pp.Google Scholar