Wenlock-Ludlow graptolite biostratigraphy and extinction: A reassessment from the southwestern Iberian Peninsula (Spain and Portugal)

Canadian Journal of Earth Sciences

Volumn 33, Issue 5, 1996, Pages 656-663

  Gutierrez Marco J C ^a   Lenz, A C ^b   Robardet, M ^c   Picarra J M ^d  

^a Facultad de Ciencias Geológicas   (Spain)

^b UNIVERSITY OF WESTERN ONTARIO   (Canada)

^c UNIVERSITÉ DE RENNES 1   (France)

^d Instituto Geologico e Mineiro   (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

BIOSTRATIGRAPHY; EXTINCTION; GRAPTOLITE; LUDLOVIAN; SILURIAN; WENLOCKIAN;

PORTUGAL; SPAIN;

EID: 0030479662     PISSN: 00084077     EISSN: None     Source Type: Journal    
DOI: 10.1139/e96-049     Document Type: Article

References (36)

1. Berry, W.B.N., and Murphy, M.A. 1975. Silurian and Devonian graptolites of central Nevada. University of California Publications in Geological Sciences, 110: 1-109.
2. 13C isotopes across the Paleocene - Eocene transition at Caravaca and Zumaya, Spain. Palaeogeography, Palaeoclimatology, Palaeoecology, 114: 75-100.
3. Carbajal y Acuña, E. 1944. Criaderos de hierro de España. Tomo VI. Hierros de Sevilla. Memoria del Instituto Geológico y Minero de España, 46: 265-454.
4. Corfield, R.M., and Siveter, D.J. 1992. Carbon isotope change as an indicator of biomass flux and an aid to correlation during ludensis-nilssoni (Silurian) time. Proceedings of the Estonian Academy of Sciences, Geology, 41: 173-181.
5. Corfield, R.M., Siveter, D.J., Cartlidge, J.E., and McKerrow, S.W. 1992. Carbon isotope excursion near the Wenlock-Ludlow (Silurian) boundary in the Anglo-Welsh area. Geology, 20: 371-374.
6. Delgado, J.F.N. 1908. Système Silurique du Portugal. Etude de stratigraphie paléontologique. Mémoires de la Commission du Service Géologique du Portugal.
7. Cessa, S., Truyols-Massoni, M., and Robardet, M. 1994. Quantitative analysis of Homoctenowakia bohemica bohemica (Tentaculitoids) from the Lochkovian of the Valle syncline, Ossa Morena, Spain. Revista Española de Paleontología, 9: 203-210.
8. Gonzalo y Tarín, J. 1878. Reseña geológica de la Provincia de Huelva. Boletin de la Comisíon del Mapa Geológico de España, 5: 1-138.
9. Hernández Sampelayo, P. 1932. Nota sobre los fósiles paleozoicos del Arroyo del Valle. Revista Minera, Metalúrgica y de Ingeniería, 83: 325.
10. Holland, C.H., Rickards, R.B., and Warren, P.T. 1969. The Wenlock graptolites of the Ludlow district, Shropshire, and their stratigraphical significance. Palaeontology, 12: 663-683.
11. Jaeger, H. 1991. Neue Standard-Graptolithenzonenfolge nach der "Grossen Krise" an der Wenlock/Ludlow-Grenze (Silur). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 182: 303-354.
12. Jaeger, H., and Robardet, M. 1979. Le Silurien et le Dévonien basal dans le nord de la Province de Séville (Espagne). Geobios, 12: 687-714.
13. Koren, T.N. 1991. The lundgreni extinction event in central Asia and its bearing on graptolite biochronology within the Homerian. Proceedings of the Estonian Academy of Sciences, Geology, 40: 74-78.
14. Koren, T.N. 1992. Novye pozdnevenlokskie monograptidy alaïskogo khrebta. Paleontologicheskïi Zhurnal, 2: 21-33.
15. Koren, T.N., and Suyarkova, A.A. 1994. Monograptus deubeli and praedeubeli (Wenlock Silurian) in the Asian part of the former Soviet Union. Alcheringa, 18: 85-101.
16. Koren, T.N., and Urbanek, A. 1994. Adaptive radiation of monograptids after the Late Wenlock crisis. Acta Palaeontologica Polonica, 39: 137-167.
17. Kříž, J., Dufka, P., Jaeger, H., and Schönlaub, H.P. 1993. The Wenlock/Ludlow boundary in the Pragian Basin (Bohemia). Jahrbuch der Geologischen Bundesanstalt (Austria), 136: 809-839.
18. Kühne, W.G. 1955. Unterludlow-Graptolithen aus berliner Geschieben. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 100: 350-401.
19. Lenz, A.C. 1993. Late Wenlock-Ludlow (Silurian) graptolite extinction, evolution, and biostratigraphy: perspectives from Arctic Canada. Canadian Journal of Earth Sciences, 30: 491-498.
20. Lenz, A.C. 1994a. The graptolites "Pristiograptus" praedeubeli (Jaeger) and "Pristiograptus" ludensis (Murchison) (uppermost Wenlock, Silurian) from Arctic Canada: taxonomy and evolution. Canadian Journal of Earth Sciences, 31: 1419-1426.
21. Lenz, A.C. 1994b. New upper Homerian (uppermost Wenlock; Silurian) monograptids from Arctic Canada. Canadian Journal of Earth Sciences, 31: 1779-1784.
22. Lenz, A.C. 1995. Upper Homerian (Wenlock, Silurian) graptolites and graptolite biostratigraphy, Arctic Archipelago, Canada. Canadian Journal of Earth Sciences, 32: 1378-1392.
23. Lenz, A.C., Robardet, M., Gutiérrez-Marco, J.C., and Piçarra, J.M. 1996. Devonian graptolites from southwestern Europe: a review with new data. Geological Journal. In press.
24. Palmer, D. 1970. Monograptus ludensis Zone graptolites from the Devilsbit Mountain District, Tipperary. Scientific Proceedings of the Royal Dublin Society, Series A, 3: 335-342.
25. Paul, C.R.C., and Mitchell, S.F. 1994. Is famine a common factor in marine mass extinctions? Geology, 22: 679-682.
26. Perdigão, J., Oliveira, J.T., and Ribeiro, A. 1982. Carta Geológica de Portugal na escala 1 : 50 000. Notícia Explicativa da Folha 44-B, Barrancos. Serviçes Geológicos de Portugal, Lisbon, pp. 1-52.
27. Piçarra, J.M., Gutiérrez-Marco, J.C., Oliveira, J.T., Robardet, M., and Jaeger, H. 1992. Bioestratigrafía do Silúrico da Zona de Ossa Morena (Portugal-Espanha). Revisão crítica dos dados existentes. Publicationes del Museo de Geologia de Extramadura, 1: 118-119.
28. Piçarra, J.M. Storch, P., Gutiérrez-Marco, J.C., and Oliveira, J.T. 1996. Characterization of the Parakidograptus acuminatus graptolite Biozone in the Silurian of the Barrancos region (Ossa Morena Zone, south Portugal). Comunicações do Instituto Geológico e Mineiro. In press.
29. Rickards, R.B., Packham, G.H., Wright, A.J., and Williamson, P.L. 1995. The Wenlock and Ludlow graptolite faunas and biostratigraphy of the Quarry Creek region, New South Wales. Association of Australasian Palaeontologists, Memoir 17, pp. 1-68.
30. Romariz, C. 1961. Graptolóides das formações ftaníticas do Silúrico português. Boletim da Sociedade Geológica de Portugal, 14: 17-30.
31. Romariz, C. 1962. Graptolitos do Silúrico Português. Revista da Faculdade de Ciências, Universidade de Lisboa, Série C, 10: 115-312.
32. Simon, W. 1951. Untersuchen im Paläozoikum von Seville (Sierra Morena, Spanien). Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 485: 31-52.
33. Štorch, P. 1994. Graptolite biostratigraphy of the Lower Silurian (Llandovery and Wenlock) of Bohemia. Geological Journal, 29: 137-165.
34. Teller, L. 1986. Morphology of selected Monograptidae from the Wenlock of Poland. Palaeontographica, Abteilung A, 192: 51-73.
35. Truyols, J., and Julivert, M. 1983. El Silúrico en el Macizo Thérico. In Libro Jubilar J.M. Ríos. Geología de España. Instituto Geológico y Minero de España, Spain. Vol. 1, pp. 246-265.
36. Urbanek, A. 1959. Studies on graptolites. 1. Development and structure of Pristiograptus gotlandicus (Perner). Acta palaeontologica polonica, 4: 11-26.