Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales
The evolution of the Portuguese Acanthopleuroceratinae is similar to the celto-souabe succession such as it was described in the collects of the Cottards (Cher, France). A subspecies of one of the oldest Acanthopleuroceras (A. carinatum atlanticum) is abundant in the lower part of the Portuguese Ibe...
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ftnewulisboa:oai:run.unl.pt:10362/1514 2024-06-09T07:44:06+00:00 Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales Dommergues, J.-L. Mouterde, R. 2008-07-28 http://hdl.handle.net/10362/1514 fra fre http://hdl.handle.net/10362/1514 openAccess Middle Carixian Portugal France (Cher) Ammonitina Evolution Paleobiogeography article 2008 ftnewulisboa 2024-05-15T22:47:33Z The evolution of the Portuguese Acanthopleuroceratinae is similar to the celto-souabe succession such as it was described in the collects of the Cottards (Cher, France). A subspecies of one of the oldest Acanthopleuroceras (A. carinatum atlanticum) is abundant in the lower part of the Portuguese Ibex zone; this form is described here. The species is recognized in France by several nuclei associated with A. arietiforme (Cottards-22). Generally the similarity between the successive French and Portuguese populations (A. maugenesti, A. valdani, A. alisiense, junior synonym of A. lepidum TUTCHER and TRUEMAN, 1925), is very good. This fact suggests their specific identity. It is typical for A. lepidum of which the greatest populations allow the biometric comparaisons. In Portugal, the mesogean Tropidaceras are missing. This absence of the subboreal Acanthopleuroceras ancestors suggests the straight celto-souabe derivation of the Portuguese Acanthopleuroceras and not a similar local evolution. A. lepidum the last Acanthopleuroceras reaches the western coast of Canada (British Columbia) probably by the Arctic ocean. Article in Journal/Newspaper Arctic Arctic Ocean Repositório da Universidade Nova de Lisboa (UNL) Arctic Arctic Ocean British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada |
institution |
Open Polar |
collection |
Repositório da Universidade Nova de Lisboa (UNL) |
op_collection_id |
ftnewulisboa |
language |
French |
topic |
Middle Carixian Portugal France (Cher) Ammonitina Evolution Paleobiogeography |
spellingShingle |
Middle Carixian Portugal France (Cher) Ammonitina Evolution Paleobiogeography Dommergues, J.-L. Mouterde, R. Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
topic_facet |
Middle Carixian Portugal France (Cher) Ammonitina Evolution Paleobiogeography |
description |
The evolution of the Portuguese Acanthopleuroceratinae is similar to the celto-souabe succession such as it was described in the collects of the Cottards (Cher, France). A subspecies of one of the oldest Acanthopleuroceras (A. carinatum atlanticum) is abundant in the lower part of the Portuguese Ibex zone; this form is described here. The species is recognized in France by several nuclei associated with A. arietiforme (Cottards-22). Generally the similarity between the successive French and Portuguese populations (A. maugenesti, A. valdani, A. alisiense, junior synonym of A. lepidum TUTCHER and TRUEMAN, 1925), is very good. This fact suggests their specific identity. It is typical for A. lepidum of which the greatest populations allow the biometric comparaisons. In Portugal, the mesogean Tropidaceras are missing. This absence of the subboreal Acanthopleuroceras ancestors suggests the straight celto-souabe derivation of the Portuguese Acanthopleuroceras and not a similar local evolution. A. lepidum the last Acanthopleuroceras reaches the western coast of Canada (British Columbia) probably by the Arctic ocean. |
format |
Article in Journal/Newspaper |
author |
Dommergues, J.-L. Mouterde, R. |
author_facet |
Dommergues, J.-L. Mouterde, R. |
author_sort |
Dommergues, J.-L. |
title |
Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
title_short |
Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
title_full |
Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
title_fullStr |
Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
title_full_unstemmed |
Les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
title_sort |
les acanthopleurocératinés portugais et leurs relations avec les formes subboréales |
publishDate |
2008 |
url |
http://hdl.handle.net/10362/1514 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) |
geographic |
Arctic Arctic Ocean British Columbia Canada |
geographic_facet |
Arctic Arctic Ocean British Columbia Canada |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
http://hdl.handle.net/10362/1514 |
op_rights |
openAccess |
_version_ |
1801372899729211392 |