Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas]
The Middle Jurassic-Lower Cretaceous continental "Red Beds" of the Moroccan Atlas have provided very interesting new taxa of charophytes and lacustrine ostracods: Aclistochara africana n.sp. (Bathonian), Feistiella atlantis n.sp. (Hauterivian-Lower Barremian), Cypridea suprajurassica n.sp....
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| Format: | Article |
| Language: | English |
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Association Carnets de Geologie
2009-10-01
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| Series: | Carnets de Géologie |
| Subjects: | |
| Online Access: | http://paleopolis.rediris.es/cg/CG2009_M03/index.html |
| _version_ | 1797727853055311872 |
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| author | Mojon Pierre-Olivier Haddoumi Hamid Charrière André |
| author_facet | Mojon Pierre-Olivier Haddoumi Hamid Charrière André |
| author_sort | Mojon Pierre-Olivier |
| collection | DOAJ |
| description | The Middle Jurassic-Lower Cretaceous continental "Red Beds" of the Moroccan Atlas have provided very interesting new taxa of charophytes and lacustrine ostracods: Aclistochara africana n.sp. (Bathonian), Feistiella atlantis n.sp. (Hauterivian-Lower Barremian), Cypridea suprajurassica n.sp., Cypridea mohandi n.sp. and Cypridea demnatensis n.sp. (Oxfordian ? - Kimmeridgian), Harbinia atlasica n.sp. (Hauterivian ? - Lower Barremian). Micropaleontological data obtained after 2002 contributed the following: * In the central High-Atlas, discovery of Upper Jurassic charophytes and freshwater ostracods (Dictyoclavator ramalhoi, Porochara kimmeridgensis, Aclistochara bransoni, Cypridea suprajurassica, Cypridea mohandi, Cypridea demnatensis) evince a Barremian ingression, its restricted marine character attested by lagoonal-brackish water ostracods (Harbinia atlasica) and presumed marine ostracods Trachyleberididae (cf. Strigosocythere strigosa, Cythereis ? sp., Protocythere ? sp.) associated with well-developed gypsiferous evaporites. * In the eastern High-Atlas, charophytes have been found at levels related to the Jurassic/Cretaceous boundary (Upper Tithonian–Berriasian Porochara maxima). * In the non-marine Lower Cretaceous (Hauterivian ? - Barremian) of the central High-Atlas, mixed Eurasian e and Gondwanian g assemblages of charophytes: Globator (e) and Feistiella (g), and brackish-lacustrine ostracods: (Fabanella-Cetacella (e), Darwinula-Cypridea-Harbinia (e & g) and Salvadoriella-Petrobrasia-Reconcavona-Paracypridea (g), were discovered. * Complementary data for the Lower Cretaceous charophyte biozonation (Upper Valanginian-Lower Barremian interval) with Globator hemiglobatoroides Mojon n.sp. (Cenozone M7a, NE-Spain) and Globator mutabilis (Cenozone M7b) from NE-Spain and Morocco (central High-Atlas) were obtained. * In the Moroccan Atlas area several stages in the breaking up of Pangea and the opening of the Atlantic Ocean have been recognized. These dislocations took place mainly during Bathonian times but also involved portions of the Kimmeridgian and Barremian. |
| first_indexed | 2024-03-12T11:05:30Z |
| format | Article |
| id | doaj.art-6ca7a2545fdd4b9c8b110d8db5caa843 |
| institution | Directory Open Access Journal |
| issn | 1765-2553 1634-0744 |
| language | English |
| last_indexed | 2024-03-12T11:05:30Z |
| publishDate | 2009-10-01 |
| publisher | Association Carnets de Geologie |
| record_format | Article |
| series | Carnets de Géologie |
| spelling | doaj.art-6ca7a2545fdd4b9c8b110d8db5caa8432023-09-02T04:02:25ZengAssociation Carnets de GeologieCarnets de Géologie1765-25531634-07442009-10-01CG2009M031101Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas]Mojon Pierre-OlivierHaddoumi HamidCharrière AndréThe Middle Jurassic-Lower Cretaceous continental "Red Beds" of the Moroccan Atlas have provided very interesting new taxa of charophytes and lacustrine ostracods: Aclistochara africana n.sp. (Bathonian), Feistiella atlantis n.sp. (Hauterivian-Lower Barremian), Cypridea suprajurassica n.sp., Cypridea mohandi n.sp. and Cypridea demnatensis n.sp. (Oxfordian ? - Kimmeridgian), Harbinia atlasica n.sp. (Hauterivian ? - Lower Barremian). Micropaleontological data obtained after 2002 contributed the following: * In the central High-Atlas, discovery of Upper Jurassic charophytes and freshwater ostracods (Dictyoclavator ramalhoi, Porochara kimmeridgensis, Aclistochara bransoni, Cypridea suprajurassica, Cypridea mohandi, Cypridea demnatensis) evince a Barremian ingression, its restricted marine character attested by lagoonal-brackish water ostracods (Harbinia atlasica) and presumed marine ostracods Trachyleberididae (cf. Strigosocythere strigosa, Cythereis ? sp., Protocythere ? sp.) associated with well-developed gypsiferous evaporites. * In the eastern High-Atlas, charophytes have been found at levels related to the Jurassic/Cretaceous boundary (Upper Tithonian–Berriasian Porochara maxima). * In the non-marine Lower Cretaceous (Hauterivian ? - Barremian) of the central High-Atlas, mixed Eurasian e and Gondwanian g assemblages of charophytes: Globator (e) and Feistiella (g), and brackish-lacustrine ostracods: (Fabanella-Cetacella (e), Darwinula-Cypridea-Harbinia (e & g) and Salvadoriella-Petrobrasia-Reconcavona-Paracypridea (g), were discovered. * Complementary data for the Lower Cretaceous charophyte biozonation (Upper Valanginian-Lower Barremian interval) with Globator hemiglobatoroides Mojon n.sp. (Cenozone M7a, NE-Spain) and Globator mutabilis (Cenozone M7b) from NE-Spain and Morocco (central High-Atlas) were obtained. * In the Moroccan Atlas area several stages in the breaking up of Pangea and the opening of the Atlantic Ocean have been recognized. These dislocations took place mainly during Bathonian times but also involved portions of the Kimmeridgian and Barremian.http://paleopolis.rediris.es/cg/CG2009_M03/index.htmlCharophytesOstracodsMiddle-Upper JurassicLower CretaceousAtlas MountainsMorocco |
| spellingShingle | Mojon Pierre-Olivier Haddoumi Hamid Charrière André Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] Carnets de Géologie Charophytes Ostracods Middle-Upper Jurassic Lower Cretaceous Atlas Mountains Morocco |
| title | Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] |
| title_full | Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] |
| title_fullStr | Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] |
| title_full_unstemmed | Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] |
| title_short | Nouvelles données sur les Charophytes et Ostracodes du Jurassique moyen-supérieur - Crétacé inférieur de l'Atlas marocain [New data on the Middle-Upper Jurassic - Lower Cretaceous Charophytes and Ostracods from the Moroccan Atlas] |
| title_sort | nouvelles donnees sur les charophytes et ostracodes du jurassique moyen superieur cretace inferieur de l atlas marocain new data on the middle upper jurassic lower cretaceous charophytes and ostracods from the moroccan atlas |
| topic | Charophytes Ostracods Middle-Upper Jurassic Lower Cretaceous Atlas Mountains Morocco |
| url | http://paleopolis.rediris.es/cg/CG2009_M03/index.html |
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