Swiss Journal of Geosciences

, Volume 104, Issue 1, pp 81–96 | Cite as

The Pliensbachian ammonites of the Algarve Basin (Portugal) and their palaeobiogeographical significance for the “Iberia-Newfoundland” conjugate margins

  • Jean-Louis Dommergues
  • Christian Meister
  • Rogério B. Rocha


A review of the Pliensbachian ammonite faunas of the Algarve Basin is given covering their taxonomy, stratigraphy and palaeobiogeography (palaeobiodiversity). This review is based on both an extensive revision of the previously collected and/or published material and on new finds precisely located within the ammonite succession. This new material allows us to clarify the variations within the most abundant species—a new species Reynesocoeloceras elmii nov. sp. is described—and to improve our understanding (palaeobiodiversity, palaeobiogeography and bio- or chrono-stratigraphy) of the two single known Pliensbachian fossiliferous assemblages in the Algarve Basin. The first of these assemblages is relatively diverse and is ascribed to the upper half of the Luridum Subchronozone. The second assemblage is less diversified and probably partly condensed. It is broadly attributed to the upper half of the Stokesi Subchronozone. Despite the newly collected ammonites and extensive prospecting, our knowledge of the Pliensbachian ammonite faunas of the Algarve remains fragmentary. Therefore, it is difficult to propose an incontrovertible extensive palaeobiogeographical interpretation for these faunas, but it seems that Tethyan (Mediterranean) affinities were of major importance whereas there were probably no NW European influences via the Lusitanian Basin.


Ammonites Early Jurassic Algarve Basin Portugal Stratigraphy Palaeobiogeography 

Institutional abbreviations


Forte de Belixe, specimen housed in the collections of the “Universidade Nova de Lisboa” (R.B. Rocha collection)


Cabo de Sao Vicente, specimen housed in the collections of the “Universidade Nova de Lisboa” (R.B. Rocha collection)


Specimen housed in the Collections of the “Serviços Geológicos de Portugal” (P. Choffat collection)


Specimen housed in the collections of the “Université de Bourgogne, Géologie Dijon”


  1. Choffat, P. (1887). Recherches sur les terrains secondaires au Sud du Sado. Communicações da Commissao dos Trabalhos Geologicos, 1, 222–311.Google Scholar
  2. Dommergues, J.-L. (1987). L’évolution chez les Ammonitina du Lias moyen (Carixien, Domérien basal) en Europe occidentale. Documents des Laboratoires de Géologie Lyon, 98, 1–297.Google Scholar
  3. Dommergues, J.-L. (1990). Ammonoids. In K. J. McNamara (Ed.), Evolutionary trends (pp. 162–187). London: Belhaven Press.Google Scholar
  4. Dommergues, J.-L., & El Hariri, K. (2002). Endemism as a palaeobiogeographic parameter of basin history illustrated by early- and mid-Liassic peri-Tethyan ammonite faunas. Palaeogeography, Palaeoclimatology, Palaeoecology, 184, 407–418.CrossRefGoogle Scholar
  5. Dommergues, J.-L., & Meister, C. (1999). Cladistic formalisation of relationships within a superfamily of lower Jurassic Ammonitina: Eoderocerataceae Spath, 1929. Revue de Paléobiologie, 18, 273–286.Google Scholar
  6. Dommergues, J.-L., Meister, C., & Mouterde, R. (2002). Fuciniceras paradoxus nov. sp. (Harpoceratinae, Ammonitina) du Domérien portugais. Réflexion sur le sens taxonomique d’un assemblage paradoxal de caractères. Geobios, 35, 457–468.CrossRefGoogle Scholar
  7. Dommergues, J.-L., Meister, C., Neige, P., & Rocha, R. B. (2004). Endemic Sinemurian (Early Jurassic) ammonites from the Lusitanian Basin (Portugal). Revue de Paléobiologie, 23, 529–549.Google Scholar
  8. Dommergues, J.-L., Meister, C., & Rocha, R. B. (2010). The Sinemurian ammonites of the Lusitanian Basin (Portugal): a remarkable example of complex endemic evolution. Palaeodiversity, 3, 139–167.Google Scholar
  9. Dommergues, J.-L., & Mouterde, R. (1982). Reynesocoeloceras praeincertum nov. sp. (Ammonitina, Carixien moyen). Remarques sur l’origine du genre Reynesocoeloceras. Geobios, 15, 757–763.CrossRefGoogle Scholar
  10. Dommergues, J.-L., & Mouterde, R. (1987). The endemic trends of the Liassic ammonite faunas of Portugal as the result of the opening up of a narrow epicontinental basin. Palaeogeography, Palaeoclimatology, Palaeoecology, 58, 129–137.CrossRefGoogle Scholar
  11. Fantini-Sestini, N. (1974). Phylloceratina (Ammonoidea) del Pliensbachiano italiano. Rivista Italiana di Paleontologia, 80, 193–250.Google Scholar
  12. Faraoni, P., Marini, A., Pallini, G., & Venturi, F. (2002). Protogrammoceratinae and new ammonite assemblages of the central Apennines and their significance on the Carixian-Domerian biostratigraphic boundary in the Mediterranean paleoprovince. Geologica Romana, 36, 215–249.Google Scholar
  13. Fucini, A. (1900). Ammoniti del Lias Medio dell’Appennino Centrale existensi nel museo di Pisa. Palaeontographia italica, 6, 17–78.Google Scholar
  14. Fucini, A. (1904). Cefalopodi Liassici del Monte di Cetona. Palaeontographia Italica, 10, 241–264.Google Scholar
  15. Fucini, A. (1905). Cefalopodi Liassici del Monte di Cetona. Palaeontographia Italica, 11, 265–318.Google Scholar
  16. Geczy, B., & Meister, C. (1998). Les ammonites du Domérien de la montagne du Bakony (Hongrie). Revue de Paléobiologie, 17, 69–161.Google Scholar
  17. Gemmellaro, G. G. (1882). Sopra alcune faune giuresi e liasiche della Sicilia. Palermo: Stabilimento tipographico.Google Scholar
  18. Gemmellaro, G. G. (1884). Sui fossili degli strati a Terebratura Aspasia della contrada Rocche rosse presso Galati (Provincia di Messina). Giornale di Scienze naturali ed economiche Palermo, 16, 167–218.Google Scholar
  19. Johannson, G. G., Smith, P. L., & Gordey, S. P. (1997). Early Jurassic evolution of the northern Stikinian arc: Evidence from the Laberge Group, northwestern British Columbia. Canadian Journal of Earth Sciences, 34, 1030–1057.CrossRefGoogle Scholar
  20. Mouterde, R., Dommergues, J.-L., Meister, C., & Rocha, R. B. (2007). Atlas des fossiles caractéristiques du Lias portugais. III a. Domérien (Ammonites). Ciências da Terra, 16, 67–111.Google Scholar
  21. Mouterde, R., & Ferretti, A. (1986). Les Ammonites—Caractères et intérêt. Exemple de l’évolution des Harpocératidés du Lias moyen mésogéen (Apennin des Marches). In G. Pallini (Ed.), Atti I convegno Pergola 1984: Fossili, Evoluzione, Ambiente (pp. 73–77). Pergola: Comitato Centenario Raffaele Piccinini.Google Scholar
  22. Pratsch, J. C. (1958). Stratigraphisch-tektonische Untersuchungen im Mesozoikum von Algarve (Südportugal). Beihefte zum Geologischen Jahrbuch, 30, 1–123.Google Scholar
  23. Ribeiro, C., & Terrinha, P. (2007). Formation, deformation and chertification of systematic clastic dykes in differentially lithified carbonate multilayer. SW Iberia, Algarve Basin, Lower Jurassic. Sedimentary Geology, 196, 201–215.CrossRefGoogle Scholar
  24. Rocha, R. B. (1971a). Contribuição para o estudo geológico da região do Cabo de S. Vicente-Alvor. Boletim da Sociedade Geológica de Portugal, 17, 139–168.Google Scholar
  25. Rocha, R. B. (1971b). Un Metaderoceras (Carixien) du Cap S. Vicente (Algarve). Boletim da Sociedade Geológica de Portugal, 17, 169–176.Google Scholar
  26. Rocha, R. B. (1977). Estudo estratigráfico e paleontológico do Jurássico do Algarve ocidental. Ciências da Terra, 2, 1–178.Google Scholar
  27. Rocha, R. B., Ramalho, M. M., Antunes, M. T., & Coelho, A. V. P. (1983). Carta Geológica de Portugal na escala de 1/50000. Notíca explicative da folha 52-A Portimão. Serviços Geológicos de Portugal.Google Scholar
  28. Rocha, R. B., Ramalho, M. M., Manuppella, G., Zbyszewski, G., & Coelho, A. V. P. (1979). Carta Geológica de Portugal na escala de 1/50000. Notíca explicative da folha 51-B Vila do Bispo. Serviços Geológicos de Portugal.Google Scholar
  29. Sandness, F., & Pacheco, J. (2002). Portuguese deepwater basins show potential. Offshore, 62, 1–3.Google Scholar
  30. Smith, P. L., & Tipper, H. W. (1996). Pliensbachian (Lower Jurassic) Ammonites of the Queen Charlotte Islands, British Columbia. Bulletins of American Paleontology, 108, 1–122.Google Scholar
  31. Sowerby, J. (1812–1822). The mineral conchology of Great Britain (Vol. 1–4 (début), pl. 1–383). London: Benjamin Meredith.Google Scholar
  32. Srivastava, S. P., & Verhoef, J. (1992). Evolution of Mesozoic sedimentary basins around the North Central Atlantic: a preliminary plate kinematic solution. In J. Parnell (Ed.), Basins of the Atlantic Seaboard: Petroleum geology, sedimentology and basin evolution. Geological Society (London) Special Publication, 62, pp. 397–420.Google Scholar
  33. Terrinha, P., Ribeiro, C., Kullberg, J. C., Lopes, C., Rocha, R., & Ribeiro, A. (2002). Compressive episodes and faunal isolation during rifting, Southwest Iberia. The Journal of Geology, 110, 101–113.CrossRefGoogle Scholar
  34. Wiedenmayer, F. (1977). Die Ammoniten des Besazio-kalks (Pliensbachian, Südtessin). Mémoires suisses de Paléontologie, 98, 1–169.Google Scholar

Copyright information

© Swiss Geological Society 2011

Authors and Affiliations

  • Jean-Louis Dommergues
    • 1
  • Christian Meister
    • 2
  • Rogério B. Rocha
    • 3
  1. 1.Université de Bourgogne, Biogeosciences, UMR CNRS 5561DijonFrance
  2. 2.Département de Géologie et de PaléontologieMuséum d’Histoire naturelle de GenèveGenevaSwitzerland
  3. 3.Earth Sciences Department, Faculty of Sciences and Technology, Geological Sciences and Engineering Research CenterUniversidade Nova de LisboaCaparicaPortugal

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