Primer registro de sauropterigios fósiles del Triásico Superior del suroeste de España (Ayamonte, provincia de Huelva)

Autores/as

DOI:

https://doi.org/10.3989/egeol.44639.613

Palabras clave:

Vertebrado fósil, Facies Germánicas, Triásico superior, Tethys Occidental

Resumen


Este trabajo se centra en el estudio del primer registro de un resto fósil de sauropterigio procedente del Triásico superior del sector oriental del Paleomargen Suribérico. El resto, encontrado en la sucesión sedimentaria carbonatada del Triásico que aflora en Ayamonte (Huelva, España), corresponde a un arco neural de un sauropterigio. La sucesión carbonatada se depositó en un ambiente marino muy somero simultáneamente a cierta actividad ígnea durante el Rhaetiense (Triásico superior). El resto fósil aparece aislado, desarticulado y presenta algunas fracturas que evidencian cierto transporte por corrientes, sin descartar la posible interacción de organismos carroñeros. El arco neural está conservado como fosfato cálcico con enriquecimiento en Sr, de acuerdo con los mapeos composicionales realizados sobre el resto fósil y el sedimento circundante. Los rasgos anatómicos no han permitido su identificación taxonómica detallada. El resto estudiado extiende el registro de reptiles sauropterigios hacia el occidente colonizando el Paleomargen Suribérico, en este caso la Cuenca del Algarve, conforme se producía la rotura (rifting) de Pangea y el Tethys se abría paso hacia el oeste con la progresiva inundación de nuevas cuencas.

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Publicado

2022-07-21

Cómo citar

Reolid, M. ., Muñiz, F., Toscano, A., & Belaústegui, Z. (2022). Primer registro de sauropterigios fósiles del Triásico Superior del suroeste de España (Ayamonte, provincia de Huelva). Estudios Geológicos, 78(1), e145. https://doi.org/10.3989/egeol.44639.613

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Datos de los fondos

Junta de Andalucía
Números de la subvención PY20_00111;RNM-200 Research Group

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