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| Rawson, P.F.; Hoedemaeker, P.J.; Aguirre-Urreta, M.B.; Avram, E.; Ettachfini, M.; Kelly, S.R.A.; Klein, J.; Kotetishvili, E.; Owen, H.G.; Ropolo, P.; Thomson, M.R.A.; Wippich, M.; Vasicek, Z.. |
| The Working Group proposes only one modification to its current zonation of the Mediterranean Region, the addition of a cristatum Subzone in the lower part of the inflatum Zone (upper Albian). But in the light of newly published research it highlights levels/areas where further work is required, especially to resolve conflicting zonal schemes. It also proposes a 'Tethyan Province' zonation for the middle Albian. Alternative correlations for the Boreal/Tethyan Valanginian to Barremian stages are tabulated, one based on ammonite evidence alone, the other with additional biostratigraphical data coupled with sequence stratigraphy and magnetostratigraphy. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317291 |
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| Vasicek, Z.. |
| New records of heteromorph ammonites from the Silesian Unit of the Outer Western Carpathians (Czech Republic) are represented especially by small pyrite steinkerns with suture lines preserved. A lesser proportion of them belongs to representatives of the subfamily Bochianitidae from the Valanginian. Among the most interesting is Baculina rouyana dOrbigny. Another group consists primarily of lower Barremian Leptoceratoidinae. In addition to commonly occurring species of Hamulinites and Leptoceratoides, an Eoheteroceras assemblage is often found, represented partially by new elements. Heteromorphs from the Northern Calcareous Alps (Austria) come from marly Hauterivian limestones. Ptychoceras meyrati is present through most of the Hauterivian. Well-dated... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317350 |
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