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| Avram, E.. |
| The Berriasian — lower Valanginian genus Leptoceras reappears in the lower Barremian sequences of Rumania, where it is represented by at least two species: L. brunneriforme sp. nov. and L. svinitense sp. nov. This record has led to a revision of the so far accepted taxonomic interpretation of the criomorph Barremian Leptoceratoidinae and of their relationship with the Berriasian-Valanginian Protancyloceratinae. In addition, a new species of the genus Hamulinites (H. nicklesi, from the uppermost Hauterivian) provides evidence that the genus Eoleptoceras Manolov should be considered valid. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317315 |
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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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