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| Owen, H.G.. |
| Although the so-called ‘standard’ ammonite zonation of the Albian contains index species which occur in the Tethyan province, the scheme largely reflects the faunal succession in the European faunal province with its endemic sonneratiinid and hoplitinid faunal elements. Workers in the Tethyan province, stretching from South America in the west to Australia in the east, including southern Africa, Madagascar and India, face problems in the correlation of their successions with this so-called ‘standard’ scheme. There are other problems in that the succession of hoplitinid ammonites used in the biostratigraphy of European Albian sediments allows a far more detailed zonation to be made than in the case of some of the longer time-ranging Tethyan forms. This... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Early Cretaceous; Albian Stage; Ammonite zonation; European and Tethyan faunal provinces; 38.22; 42.73. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/216199 |
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| Kakabadze, M.V.; Hoedemaeker, P.J.; Bogdanova, T.N.; Sharikadze, M.Z.. |
| On the basis of new and published palaeontological and stratigraphical data, the qualitative and quantitative variations in the Barremian-early Albian ammonite fauna of Colombia have been documented and analyzed. The position adopted here is that in the early Barremian the Andean Province became replaced by the Caribbean Subprovince in Colombia. The Caribbean Subprovince became separated as an independent unit from the Andean Province on the generic level (Buergliceras, Pedioceras), but especially on the species level. In the middle/upper Aptian many new endemic genera and subgenera appeared; Juandurhamiceras, Neodeshayesites, Laqueoceras, Zambranoites, Riedelites and Pseudoptychoceras. Besides, many endemic middle Aptian species of other, non-endemic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Palaeobiogeography; Early Cretaceous; Ammonites; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214461 |
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