Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco
Four distinct echinoderm Lagerstätten have recently been discovered in the Upper Ordovician of the eastern Anti-Atlas, Morocco. They have yielded hundreds of exquisitely preserved specimens. Their taphonomy and associated lithology both suggest rapid, in situ burial. Here we discuss the diverse rang...
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| Format: | Conference Paper |
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2010
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| Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84858640272&partnerID=40&md5=079b7afab4acd8b90e3bda51e3b4ac9f http://hdl.handle.net/20.500.11937/24911 |
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| author | Hunter, Aaron Lefebvre, B. Nardin, E. Van Roy, P. Zamora, S. Régnault, S. |
| author_facet | Hunter, Aaron Lefebvre, B. Nardin, E. Van Roy, P. Zamora, S. Régnault, S. |
| author_sort | Hunter, Aaron |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Four distinct echinoderm Lagerstätten have recently been discovered in the Upper Ordovician of the eastern Anti-Atlas, Morocco. They have yielded hundreds of exquisitely preserved specimens. Their taphonomy and associated lithology both suggest rapid, in situ burial. Here we discuss the diverse range of assemblages represented and their significance to the diversity of echinoderms in the Lower Palaeozoic. The oldest assemblage (Izegguirene Formation, lowermost Caradoc) is dominated by eocrinoids, large ophiuroids, and mitrate stylophorans associated with rare crinoids. It shows strong similarities with slightly older faunas described from the underlying Ouine-Inirne Formation (Llandeilian) in the Central Anti-Atlas. The second assemblage (lower part of the Lower Ktaoua Formation, lower-middle Caradoc) is composed of eocrinoids (Cardiocystites) and small ophiuroids (encrinasterid indet.). The third assemblage was collected in the upper part of the Lower Ktaoua Formation (lowermost Ashgill). This ’starfish’ bed is dominated by ophiuroids and large solutes, associated with common diploporites and rhombiferans, and rare crinoids and mitrates. Finally, the youngest assemblage (lower part of Upper Tiouririne Formation, lower Ashgill) has yielded abundant remains of edrioasteroids and rhombiferans. © 2010 Taylor & Francis Group. |
| first_indexed | 2025-11-14T07:54:40Z |
| format | Conference Paper |
| id | curtin-20.500.11937-24911 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:54:40Z |
| publishDate | 2010 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-249112017-01-30T12:45:41Z Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco Hunter, Aaron Lefebvre, B. Nardin, E. Van Roy, P. Zamora, S. Régnault, S. Four distinct echinoderm Lagerstätten have recently been discovered in the Upper Ordovician of the eastern Anti-Atlas, Morocco. They have yielded hundreds of exquisitely preserved specimens. Their taphonomy and associated lithology both suggest rapid, in situ burial. Here we discuss the diverse range of assemblages represented and their significance to the diversity of echinoderms in the Lower Palaeozoic. The oldest assemblage (Izegguirene Formation, lowermost Caradoc) is dominated by eocrinoids, large ophiuroids, and mitrate stylophorans associated with rare crinoids. It shows strong similarities with slightly older faunas described from the underlying Ouine-Inirne Formation (Llandeilian) in the Central Anti-Atlas. The second assemblage (lower part of the Lower Ktaoua Formation, lower-middle Caradoc) is composed of eocrinoids (Cardiocystites) and small ophiuroids (encrinasterid indet.). The third assemblage was collected in the upper part of the Lower Ktaoua Formation (lowermost Ashgill). This ’starfish’ bed is dominated by ophiuroids and large solutes, associated with common diploporites and rhombiferans, and rare crinoids and mitrates. Finally, the youngest assemblage (lower part of Upper Tiouririne Formation, lower Ashgill) has yielded abundant remains of edrioasteroids and rhombiferans. © 2010 Taylor & Francis Group. 2010 Conference Paper http://hdl.handle.net/20.500.11937/24911 http://www.scopus.com/inward/record.url?eid=2-s2.0-84858640272&partnerID=40&md5=079b7afab4acd8b90e3bda51e3b4ac9f restricted |
| spellingShingle | Hunter, Aaron Lefebvre, B. Nardin, E. Van Roy, P. Zamora, S. Régnault, S. Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title | Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title_full | Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title_fullStr | Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title_full_unstemmed | Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title_short | Preliminary report on new echinoderm Lagerstätten from the Upper Ordovician of the eastern Anti-Atlas, Morocco |
| title_sort | preliminary report on new echinoderm lagerstätten from the upper ordovician of the eastern anti-atlas, morocco |
| url | http://www.scopus.com/inward/record.url?eid=2-s2.0-84858640272&partnerID=40&md5=079b7afab4acd8b90e3bda51e3b4ac9f http://hdl.handle.net/20.500.11937/24911 |