Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-27T23:59:52.878Z Has data issue: false hasContentIssue false

New styginids from the Late Devonian of Western Australia—the last corynexochid trilobites

Published online by Cambridge University Press:  20 May 2016

Kenneth J. McNamara
Affiliation:
Department of Earth & Planetary Sciences, Western Australian Museum, Francis Street, Perth, Western Australia 6000, Australia,
Raimund Feist
Affiliation:
Institut des Sciences de l'Evolution, Laboratoire de Paléontologie, Université Montpellier II, Place E. Bataillon, 34095 Montpellier Cedex 5, France,

Abstract

Two new species of scutelluine styginid trilobites are described from Frasnian strata in the Virgin Hills Formation in the Canning Basin of Western Australia. They are placed in the genus Telopeltis n. gen., reflecting the fact that their final occurrence in the late Frasnian, up to the latest Frasnian Kellwasser extinction event, is the last known record of scutelluine trilobites. As such, it also represents the youngest record of the order Corynexochida. The two species, Telopeltis woodwardi n. sp. and Telopeltis microphthalmus n. sp., are unlike most other scutelluines in possessing extremely vaulted pygidia and showing trends to eye reduction. Such eye reduction is a common feature of late Frasnian trilobites. The characteristic morphological features of this small genus are indicative of evolution of this last scutelluine by paedomorphosis.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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

Archinal, A. 1994. Zur morphologie, systematik, stratigraphie und ökologie der gattung Scutellum (Trilobita: Devon). Senckenbergiana lethaea, 74:291324.Google Scholar
Basse, M., and Müller, P. 2004. Eifel-Trilobiten 3. Corynexochida, Proetida (2), Harpetida, Phacopida (2), Lichida. Edition Goldschneck, Wiebelsheim, 261 p.Google Scholar
Becker, R. T. 2000. Palaeobiogeographic relationships and diversity of Upper Devonian ammonoids from Western Australia. Records of the Western Australian Museum, supplement 58:385401.Google Scholar
Becker, R. T., Feist, R., Flajs, G., House, M. R., and Klapper, G. 1989. Frasnian–Famennian extinction events in the Devonian at Coumiac, southern France. Comptes Rendus Académie des Sciences de Paris, 309:259266.Google Scholar
Becker, R. T., House, M. R., Kirchgasser, W. T., and Playford, P. E. 1991. Sedimentary and faunal changes across the Frasnian/Famennian boundary in the Canning Basin of Western Australia. Historical Biology, 5:183196.CrossRefGoogle Scholar
Chatterton, B. D. E. 1971. Taxonomy and ontogeny of Siluro–Devonian trilobites from near Yass, New South Wales. Palaeontographica, Abteilung A, 137:1108.Google Scholar
Chlupáč, I. 1992. Trilobites from the Givetian and Frasnian of the Holy Cross Mountains. Acta Palaeontologica Polonica, 37:395406.Google Scholar
Crônier, C., and Feist, R. 2004. Variation in the eye of Acuticryphops (Phacopina, Trilobita) and its evolutionary significance: A biometric and morphometric approach. Paleobiology, 30:471481.Google Scholar
Druce, E. C. 1976. Conodont biostratigraphy of the Upper Devonian reef complexes of the Canning Basin, Western Australia. Australia Bureau Mineral Resources Bulletin, 158, 303 p.Google Scholar
Feist, R. 1970. Breviscutellum (Meridioscutellum) n. sg. (Trilobite) et son développement larvaire. Geobios, 3:4173.CrossRefGoogle Scholar
Feist, R. 1974. Devonische Scutelluidae (Trilobiten) aus der östlichen Montagne Noire (Südfrankreich). Palaeontographica, Abteilung A, 147:70114.Google Scholar
Feist, R. 1991. The Late Devonian trilobite crises. Historical Biology, 5:197214.Google Scholar
Feist, R. 2002. Trilobites from the latest Frasnian Kellwasser Crisis in North Africa (Mrirt, central Moroccan Meseta). Acta Palaeontologica Polonica, 47:203210.Google Scholar
Feist, R., and Becker, T. 1997. Discovery of Famennian trilobites in Australia (late Devonian, Canning Basin, NW Australia). Geobios, 20:231242.Google Scholar
Feist, R., and Schindler, E. 1994. Trilobites during the Frasnian Kellwasser Crisis in European Late Devonian cephalopod limestones. Courier Forschungsinstitut Senckenberg, 169:195223.Google Scholar
Feist, R., and Talent, J. A. 2000. Devonian trilobites from the Broken River region of northeastern Australia. Records of the Western Australian Museum, supplement 58:6580.Google Scholar
Fortey, R. A., and Owens, R. M. 1997. Evolutionary history, p. 249287. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology. Pt. O. Arthropoda 1, Trilobita (revised). Vol. 1. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Girard, C., Klapper, G., and Feist, R. 2005. Subdivision of the terminal Frasnian linguiformis conodont Zone, revision of the correlative interval of Montagne Noire Zone 13, and discussion of stratigraphically significant associated trilobites, p. 181198. In Morrow, J. R., Over, D. J., and Wignall, P. B. (eds.), Understanding Late Devonian and Permian–Triassic Biotic and Climatic Events: Towards an Integrated Approach. Developments in Palaeontology and Stratigraphy.Google Scholar
Glauert, L. 1910. New fossils from the Napier Range, Kimberley. Geological Survey of Western Australia Bulletin, 36:111114.Google Scholar
Glenister, B. F., and Klapper, G. 1966. Upper Devonian conodonts from the Canning Basin, Western Australia. Journal of Paleontology, 40:777842.Google Scholar
Goldfuss, G. A. 1839. Beiträge zur Petrefactenkunde. B. Beiträge zur Familie der fossilen Crustaceen. Verhandlungen der Kaiserlichen Leopoldinisch-Carolinischen der Naturforscher, 19:327364.Google Scholar
Goldfuss, G. A. 1843. Systematische Übersicht der Trilobiten und Beschreibung einiger neuen Arten derselben. Neues Jahrbuch für Mineralogie, 1843:537567.Google Scholar
Hawle, I., and Corda, A. J. C. 1847. Prodrom einer Monographie der Böhmischen Trilobiten. Abhandlungen der königlichen Böhmischen Gesellschaft der Wissenschaften, 5:1176.Google Scholar
Holloway, D. J. 1996. New early Devonian styginid trilobites from Victoria, Australia, with revision of some spinose styginids. Journal of Paleontology, 70:428438.CrossRefGoogle Scholar
Holloway, D. J., and Neil, J. V. 1982. Trilobites from the Mount Ida Formation (Late Silurian–Early Devonian), Victoria. Proceedings of the Royal Society of Victoria, 94:133154.Google Scholar
Klapper, G. 1988. The Montagne Noire Frasnian (Upper Devonian) conodont succession. Canadian Society of Petroleum Geologists Memoir, 14:449468.Google Scholar
Klapper, G., Uyeno, T. T., Armstrong, D. K., and Telford, P. G. 2004. Conodonts of the Williams Island and Long Rapids Formations (Upper Devonian, Frasnian–Famennian) of the Onakawana B drillhole, Moose River Basin, northern Ontario, with a revision of lower Famennian species. Journal of Paleontology, 78:371387.Google Scholar
Lütke, F. 1965. Zur Kenntnis Herzynischer Trilobiten aus dem Unter- und Mitteldevon des Harzes. Palaeontographica, Abteilung A, 124:1236.Google Scholar
Maksimova, Z. A. 1955. Trilobity srednego i verchnego devona Urala i severnych Mugodzhar. Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta (VSEGEI), n.s., 3:1263. (In Russian) Google Scholar
Maksimova, Z. A. 1968. Devonskije Skutelluidy sowetskoi Arktiki i nekotoryje woprosi filogenije smjestwa Scutelluidae. (Devonian scutelluids from the Soviet Arctic and some problems of the phylogeny of the family Scutelluidae.) Eschegodnik Wsesojuznogo Paleontologicheskogo Obschchestva, 18:148165. (In Russian) Google Scholar
McCoy, F. 1849. On the classification of some British fossil Crustacea with notices of some forms in the University collection at Cambridge. Annals and Magazine of Natural History, (2) 4:161179.CrossRefGoogle Scholar
McGeachie, C. 1991. Biozonation and evolution of proetid trilobites in Frasnian sediments of the Virgin Hills Formation, Canning Basin, Western Australia. Unpublished , , 99 p.Google Scholar
Nicoll, R. S. 1984. Conodont distribution in the marginal-slope facies of the Upper Devonian reef complex, Canning Basin, Western Australia. Geological Society of America Special Papers, 19:127141.CrossRefGoogle Scholar
Playford, P. E. 1980. Devonian “Great Barrier Reef” of the Canning Basin, Western Australia. American Association of Petroleum Geologists, 64:814840.Google Scholar
Playford, P. E. 1981. Devonian reef complexes of the Canning Basin, Western Australia. Geological Society of Australia, Fifth Australian Geological Convention Field Excursion Guidebook, 64 p.Google Scholar
Playford, P. E. 1984. Platform-margin and marginal-slope relationships in Devonian reef complexes of the Canning Basin, p. 189213. In Purcell, P. G. (ed.), The Canning Basin. Proceedings GSA/PESA Canning Basin Symposium, Perth.Google Scholar
Playford, P. E., and Lowry, D. C. 1966. Devonian reef complexes of the Canning Basin, Western Australia. Geological Survey of Western Australia Bulletin, 118:1150.Google Scholar
Pusch, G. G. 1833. Geognostiche Beschreibung von Polen sowie der Übrigen Nordkarpathen-Länder. Teil 1, Stuttgart, 338 p.Google Scholar
Richter, R. 1913. Beiträge zur Kenntnis devonischer Trilobiten. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 31:341393.Google Scholar
Richter, R., and Richter, E. 1919. Proetiden aus neueren Aufsammlungen im vogtländischen und sudetischen Oberdevon. Senckenbergiana, 1:97130.Google Scholar
Richter, R., and Richter, E. 1926. Die Trilobiten der Oberdevons. Abhandlungen der Preussischen Geologischen Landesanstalt, 99:1314.Google Scholar
Richter, R., and Richter, E. 1955. Scutelluidae n.n. (Tril.). Senckenbergiana lethaea, 36:291293.Google Scholar
Schraut, G., and Feist, R. 2004. The Devonian styginid trilobite Paralejurus, with new data from Spain and Morocco. Journal of Paleontology, 78:709722.Google Scholar
Seddon, G. 1970. Frasnian conodonts from the Sadler Ridge-Bugle Gap area, Canning Basin, Western Australia. Journal of the Geological Society of Australia, 16:723753.Google Scholar
Selwood, E. B. 1966. Thysanopeltidae (Trilobita) from the British Devonian. Bulletin of the British Museum (Natural History) Geology, 13:193220.Google Scholar
Tchernysheva, N. E. 1951. Verkhnesiluriiskie i Devonskie Trilobity Kuznetskogo basseino. (A systematic study of the trilobites from the Upper Silurian and Devonian localities in the Kuznetsk basin.) Vsesoyuz. Nauch-Issledovatelskii Geologicheskii Institute Moscow, 72 p. (In Russian) Google Scholar
Teichert, C. 1943. The Devonian of Western Australia, a preliminary review. American Journal of Science, 241:69184.Google Scholar
Teichert, C. 1949. Observation on stratigraphy and palaeontology of Devonian, western portion of Kimberley Division, Western Australia. Australian Bureau Mineral Resources, 2, 55 p.Google Scholar
Vogdes, A. W. 1890. A bibliography of Palaeozoic Crustacea from 1698 to 1889. United States Geological Survey Bulletin, 63:1177.Google Scholar
Walter, O. T. 1924. Trilobites of Iowa and some related Paleozoic forms. Trilobites of the Devonian. Iowa Geological Survey Annual Reports, 1923 and 1924, 31:280295.Google Scholar
Whittington, H. B. 1999. Siluro–Devonian Scutelluinae (Trilobita) from the Czech Republic: Morphology and classification. Journal of Paleontology, 73:414430.CrossRefGoogle Scholar
Whittington, H. B., and Kelly, S. R. A. 1997. Morphological terms applied to Trilobita, p. 313329. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology. Pt. O. Arthropoda 1, Trilobita (revised). Vol. 1. Geological Society of America and University of Kansas Press, Lawrence.Google Scholar
Wright, A. J., and Chatterton, B. D. E. 1988. Early Devonian trilobites from the Jesse Limestone, New South Wales, Australia. Journal of Paleontology, 62:93103.Google Scholar
Ziegler, W., and Sandberg, C.A. 1990. The Late Devonian standard conodont zonation. Courier Forschungsinstitut Senckenbergiana, 121, 115 p.Google Scholar