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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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| Sharikadze, M.Z.; Kakabadze, M.V.; Hoedemaeker, P.J.. |
| Seventy nine species and subspecies of the following ammonite genera and subgenera of the families Douvilleiceratidae Parona & Bonarelli, Acanthohoplitidae Stoyanow, and Parahoplitidae Spath are described from the study area. Fourteen species are new; Cheloniceras rectangulatum, Ch. guanense, Epicheloniceras wiedmanni, E. douvillei, E. bradleyiformis, Vectisites (Zambranoites) nodosus, V. (Z.) etayosernai, V. (Z.) obscurus, V. (Z.) grandis, Gargasiceras subpulcher, Colombiceras formosum, Protacanthoplites originalis, Riedelites latecostatus, R. microtuberculatus. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Systematics; Aptian; Albian; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214460 |
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