|
|
|
|
|
Kelly, S.R.A.; Whitham, A.G.. |
Two deshayesitid ammonite assemblages are described from the Lower Cretaceous succession of the north coast of Hold with Hope, North-East Greenland, and their biostratigraphical significance is assessed. In the earlier assemblage Prodeshayesites cf. bodei and P. laeviusculus occur. The second assemblage contains Deshayesites boegvadi. The presence of P. cf. bodei suggests that the northwest European bodei Subzone of the fissicostatus Zone is represented in North-East Greenland. The occurrence of D. boegvadi, previously recorded only from Kuhn q, probably indicates the later part of the fissicostatus Zone, or the forbesi or deshayesi zones. Other occurrences of Greenland deshayesitid ammonites are discussed briefly. The new finds from Hold with Hope are... |
Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317360 |
| |
|
|
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 |
| |
|
|
Kelly, S.R.A.; Whitham, A.G.. |
Two deshayesitid ammonite assemblages are described from the Lower Cretaceous succession of the north coast of Hold with Hope, North-East Greenland, and their biostratigraphical significance is assessed. In the earlier assemblage Prodeshayesites cf. bodei and P. laeviusculus occur. The second assemblage contains Deshayesites boegvadi. The presence of P. cf. bodei suggests that the northwest European bodei Subzone of the fissicostatus Zone is represented in North-East Greenland. The occurrence of D. boegvadi, previously recorded only from Kuhn q, probably indicates the later part of the fissicostatus Zone, or the forbesi or deshayesi zones. Other occurrences of Greenland deshayesitid ammonites are discussed briefly. The new finds from Hold with Hope are... |
Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Deshayesitids; Aptian; Greenland; 38.22; 42.73. |
Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/216197 |
| |
|
|
|