New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal)
Pyritized internal moulds of articulated shells of the Early Jurassic brachiopod taxon Nannirhynchia pygmaea were found in beds closely below the early Toarcian oceanic anoxic event in the Polymorphum Zone in Portugal. The material allows a detailed study of the outline of the muscle fields, the len...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2012-08-01
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| Series: | Fossil Record |
| Online Access: | https://fr.pensoft.net/article/30453/download/pdf/ |
| _version_ | 1827393746308694016 |
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| author | M. Schemm-Gregory M. H. Henriques |
| author_facet | M. Schemm-Gregory M. H. Henriques |
| author_sort | M. Schemm-Gregory |
| collection | DOAJ |
| description | Pyritized internal moulds of articulated shells of the Early Jurassic brachiopod taxon Nannirhynchia pygmaea were found in beds closely below the early Toarcian oceanic anoxic event in the Polymorphum Zone in Portugal. The material allows a detailed study of the outline of the muscle fields, the length and direction of the crura, and the orientation of the cardinalia, which are hitherto undescribed. Three-dimensional reconstructions of articulated shells of N. pygmaea occurring in a single horizon were produced to show the orientation and length of arcuiform crura. The preservation of internal moulds together with the three-dimensional reconstruction of the internal shell morphology allow a more precise description of the internal morphology of this taxon than it is possible with articulated shells and serial sections.doi:10.1002/mmng.201200005 |
| first_indexed | 2024-03-08T17:55:46Z |
| format | Article |
| id | doaj.art-f1db40ccd7db49b797ea098ffbc6dbcb |
| institution | Directory Open Access Journal |
| issn | 2193-0074 |
| language | English |
| last_indexed | 2024-03-08T17:55:46Z |
| publishDate | 2012-08-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Fossil Record |
| spelling | doaj.art-f1db40ccd7db49b797ea098ffbc6dbcb2024-01-02T05:29:33ZengPensoft PublishersFossil Record2193-00742012-08-01152778310.1002/mmng.20120000530453New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal)M. Schemm-Gregory0M. H. Henriques1Centro de Geociências da Universidade de Coimbra, Largo Marquês de PombalCentro de Geociências da Universidade de Coimbra, Largo Marquês de PombalPyritized internal moulds of articulated shells of the Early Jurassic brachiopod taxon Nannirhynchia pygmaea were found in beds closely below the early Toarcian oceanic anoxic event in the Polymorphum Zone in Portugal. The material allows a detailed study of the outline of the muscle fields, the length and direction of the crura, and the orientation of the cardinalia, which are hitherto undescribed. Three-dimensional reconstructions of articulated shells of N. pygmaea occurring in a single horizon were produced to show the orientation and length of arcuiform crura. The preservation of internal moulds together with the three-dimensional reconstruction of the internal shell morphology allow a more precise description of the internal morphology of this taxon than it is possible with articulated shells and serial sections.doi:10.1002/mmng.201200005https://fr.pensoft.net/article/30453/download/pdf/ |
| spellingShingle | M. Schemm-Gregory M. H. Henriques New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) Fossil Record |
| title | New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) |
| title_full | New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) |
| title_fullStr | New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) |
| title_full_unstemmed | New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) |
| title_short | New data on internal morphology of exceptionally preserved Nannirhynchia pygmaea (Morris, 1847) from the Lusitanian Basin (Brachiopoda, Early Jurassic, Portugal) |
| title_sort | new data on internal morphology of exceptionally preserved nannirhynchia pygmaea morris 1847 from the lusitanian basin brachiopoda early jurassic portugal |
| url | https://fr.pensoft.net/article/30453/download/pdf/ |
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