Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-16T06:24:31.168Z Has data issue: false hasContentIssue false
  • English
  • Français

Lower Devonian calmoniid trilobites from the Argentine Precordillera: new taxa of the Bouleia Group, and remarks on the tempo of calmoniid radiation

Published online by Cambridge University Press:  01 May 2009

Gregory D. Edgecombe ,
Norberto E. Vaccari  and
Beatriz G. Waisfeld
Gregory D. Edgecombe
Affiliation:
Division of Earth and Environmental Sciences, Australian Museum, PO Box A285, Sydney South, NSW 2000, Australia
Norberto E. Vaccari
Affiliation:
Câtedra de Estratigrafía y Geologia Histórica, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, CONICET, Avenida Vélez Sârsfield 299, 5000 Córdoba, Argentina
Beatriz G. Waisfeld
Affiliation:
Câtedra de Estratigrafía y Geologia Histórica, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, CONICET, Avenida Vélez Sârsfield 299, 5000 Córdoba, Argentina
Get access Rights & Permissions [Opens in a new window]

Abstract

New calmoniids from the Lower Devonian Talacasto Formation in the Precordillera of San Juan, Argentina, extend the stratigraphic and geographic ranges of a clade including Bouleia Kozlowski, 1923 and Parabouleia Eldredge, 1972. The new genus Talacastops accommodates the Lochkovian T. zarelae sp.nov. from the Talacasto Formation and a closely related species from western Bolivia (Talacastops sp.nov. A). The diagnosis of Parabouleia is broadened to include P. eldredgei sp.nov., from Lochkovian strata in the lower part of the Talacasto Formation. Calmoniids from below the Scaphiocoelia Assemblage Zone display morphological disparity that rivals later occurrences, and do not conform to a model of gradual transformation of an acastomorph ancestor. Stratigraphic range extensions based on correction for ghost lineages imply a high diversity within Calmoniidae very early in the Devonian.

Type
Articles
Information
Geological Magazine , Volume 131 , Issue 4 , July 1994 , pp. 449 - 464
Copyright
Copyright © Cambridge University Press 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

Astini, R. 1990. Cuerpos de arena en la Formación Talacasto, plataforma fangosa del Devónico precordillerano, Provincia de San Juan. Actas 3er Reuniön Argentina de Sedimentologia, 13–18.Google Scholar
Astini, R. 1992. Sedimentología de la Formación Talacasto: plataforma fangosa del Devónico precordillerano, Provincia de San Juan. Revista de la Asociación Geológica Argentina 46, 277–94.Google Scholar
Baldis, B. A. 1967. Some Devonian trilobites of the Argentine Precordillera. In International Symposium on the Devonian System, vol. 2 (ed. Oswald, D. H.), pp. 789–96. Calgary: Alberta Society of Petroleum Geologists.Google Scholar
Baldis, B. A. & Longobucco, M. 1977. Trilobites devónicos de la Precordillera noroccidental (Argentina). Ameghiniana 14, 145–61.Google Scholar
Braniša, L. 1965. Los fósiles guías de Bolivia. I. Paleozóico. Boletin del Servicio Geológico de Bolivia 6, 1–282.Google Scholar
Cooper, M. R. 1982. A revision of the Devonian (Emsian–Eifelian) Trilobita from the Bokkeveld Group of South Africa. Annals of the South African Museum 89, 1–174.Google Scholar
Delo, D. M. 1935. A revision of the phacopid trilobites. Journal of Paleontology 9, 402–20.Google Scholar
Edgecombe, G. D. 1993. Silurian acastacean trilobites of the Americas. Journal of Paleontology 67, 535–48.CrossRefGoogle Scholar
Edgecombe, G. D., Waisfeld, B. G. & Vaccari, N. E. 1994. Andinacaste (Trilobita) from the earliest Devonian of Argentina. Journal of Paleontology 68, 837–41.CrossRefGoogle Scholar
Eldredge, N. 1972. Morphology and relationships of Bouleia Kozlowski, 1923 (Trilobita, Calmoniidae). Journal of Paleontology 46, 140–51.Google Scholar
Eldredge, N. & Braniša, L. 1980. Calmoniid trilobites of the Lower Devonian Scaphiocoelia Zone of Bolivia, with remarks on related species. Bulletin of the American Museum of Natural History 165, 181–290.Google Scholar
Eldredge, N. & Cracraft, J. 1980. Phylogenetic Patterns and the Evolutionary Process. Method and Theory in Comparative Biology. New York: Columbia University Press, 350 pp.Google Scholar
Eldredge, N. & Ormiston, A. R. 1979. Biogeography of Silurian and Devonian trilobites of the Malvinokaffric Realm. ln Historical Biogeography, Plate Tectonics, and the Changing Environment (eds Gray, J. and Boucot, A. J.), pp. 147–67. Corvallis: Oregon State University Press.Google Scholar
Farris, J. S. 1988. Hennig 86. Version 1.5. Program and documentation. Port Jefferson Station, New York, 22 pp.Google Scholar
Fortey, R. A., Pankhurst, R. J. & HervÉ, F. 1992. Devonian trilobites at Buill, Chile (42 S). Revista Geológica de Chile 19, 133–44.Google Scholar
Gould, S. J. 1991. The disparity of the Burgess Shale arthropod fauna and the limits of cladistic analysis: why we must strive to quantify morphospace. Paleobiology 17, 411–23.CrossRefGoogle Scholar
Herrera, Z. A. 1993. Nuevas precisiones sobre la edad de la Formación Talacasto (Precordillera argentina) en base a su fauna de braquiópodos. Actas XII Congreso Geológico Argentino 2, 289–95, Mendoza.Google Scholar
Isaacson, P. E. & Sablock, P. E. 1988. Devonian System in Bolivia, Peru and northern Chile. In Devonian of the World, vol. 1 (eds McMillan, N. J. Embry, A. F. and Glass, D. J.), pp. 719–28. Canadian Society of Petroleum Geologists Memoir no. 14.Google Scholar
Kozlowski, R. 1923. Faune dévonienne de Bolivie. Annales de Paléontologie 12, 1–112.Google Scholar
Lieberman, B. S., Edgecombe, G. D. & Eldredge, N. 1991. Systematics and biogeography of the ‘Malvinella Group’, Calmoniidae (Trilobita, Devonian). Journal of Paleontology 65, 824–43.CrossRefGoogle Scholar
Norell, M. A. 1992. Taxic origin and temporal diversity: the effect of phylogeny. In Extinction and Phylogeny (eds Novacek, M. J. and Wheeler, Q. D.), pp. 89–118. New York: Columbia University Press.Google Scholar
Padula, E. L., Rolleri, E. O., Mingramm, A. R. G., Roque, P. C., Flores, M. A. & Baldis, B. A. 1967. Devonian of Argentina. In International Symposium on the Devonian System, vol. 1 (ed. Oswald, D. H..), pp. 165–99. Calgary: Alberta Society of Petroleum Geologists.Google Scholar
Racheboeuf, P. R. 1992. Los Chonetâceos (Braquiópodos) del Devónico boliviano: bioestratigrafia y datos taxonómicos complementarios. Revista Española de Paleontología 7, 31–52.Google Scholar
Racheboeuf, P. R., Le Herisse, A., Paris, F., Babin, C., Guillocheau, F., Truyols-Massoni, M. & Suárezsoruco, R. 1993. Le Dévonien de Bolivie: biostratigraphie et chronostratigraphie. Comptes Rendus de l'Académie des Sciences, Paris 317, 795–802.Google Scholar
Racheboeuf, P. R. & Herrera, Z. A. In press. On some new Malvinokaffric Silurian and Devonian chonetacean brachiopods and the classification of others. Neues Jahrbuch für Geologie und Paléontologie.Google Scholar
Salter, J. W. 1856. Description of Palaeozoic Crustacea and Radiata from South Africa. Transactions of the Geological Society, London (2) 7, 215–24.Google Scholar
Suárez Soruco, R. 1971. Tarijactinoides jaracasensis n. gen. n. sp. del Devónico inferior. Boletin del Servicio Geológico de Bolivia 15, 53–6.Google Scholar
Vaccari, N. E., Waisfeld, B. G. & Edgecombe, G. D. In press. Calmoniid trilobites of the Lower Devonian Scaphiocoelia Zone in the Argentine Precordillera. Geobios.Google Scholar
Waisfeld, B. G., Edgecombe, G. D. & Vaccari, N. E. In press. Tormesiscus, a new blind calmoniid trilobite from the Lower Devonian, Argentine Precordillera. Geologica et Palaeontologica.Google Scholar
Wolfart, R. 1968. Die Trilobiten aus dem Devon Boliviens und ihre Bedeutung für Stratigraphie und Tiergeographie. In Beiträge zur Kenntnis des Devons von Bolivien (eds Wolfart, R. and Voges, A.), pp. 5–201. Beihefte zum Geologischen Jahrbuch no. 74.Google Scholar