Primeiro registo de trilobites no Silúrico de Portugal (Sinclinal de Moncorvo)
[EN] The abundance of trilobite fossils in Portugal has been known for over 150 years, but the presence of the group in the Silurian remained to be evidenced. Here we report the first record of trilobites in the Silurian of Portugal, in a succession of shales intercalated with limestones belonging t...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:dnet:digitalcsic_::dff399160253aa14e45a9fe391a385d4 |
| Acceso en línea: | http://hdl.handle.net/10261/425906 https://api.elsevier.com/content/abstract/scopus_id/105019758229 |
| Access Level: | acceso abierto |
| Palabra clave: | Scyphocrinites Limestone Campanhó Formation Ludlow Prui Formação Campanhó Calcários de Scyphocrinites Pridoli Encrinuridae Portugal |
| Sumario: | [EN] The abundance of trilobite fossils in Portugal has been known for over 150 years, but the presence of the group in the Silurian remained to be evidenced. Here we report the first record of trilobites in the Silurian of Portugal, in a succession of shales intercalated with limestones belonging to the Campanhó Formation of the Moncorvo Syncline. Trilobites are rare, and the assemblage is largely dominated by scyphocrinitid echinoderms, with orthoconic nautiloid cephalopods and a unique record of the bivalve Panenka?, constituting the first record of the group in the Silurian of this region. From a systematic point of view, it was possible to identify the encrinurid Cromus sp. and the phacopids Ananaspis? and Denckmannites?. Despite the open nomenclature, the Portuguese material is more similar to the type species of these genera, Cromus intercostatus, Denckmannites volborthi and Ananaspis fecunda, respectively, all from the Kopanina Formation from the Ludlow of Czechia, suggesting the same age for the levels studied. The new data strengthen the relationship between this sector of the Central Iberian Zone and the Silurian benthic faunas with Bohemian affinities already recognised in NW Spain, the Pyrenees, Catalonia and the Ossa-Morena Zone, being distinct from the rest of the Central Iberian Zone and similar to North Africa and Bohemia. |
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