New Trigonioidoidea (Bivalvia; Unionoida) from the Early Cretaceous of Spain |
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| Authors: | GRACIELA DELVENE MARTIN MUNT |
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| Affiliation: | 1. Instituto Geológico y Minero de Espa?a, Ríos Rosas, 23, 28003 Madrid, Spain;2. e‐mail: g.delvene@igme.es;3. The Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK;4. e‐mail: m.munt@nhm.ac.uk |
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| Abstract: | Abstract: Two taxa belonging to the Trigonioidoidea (Order Unionoida) are described from the Early Cretaceous of Spain. Nippononaia (Paranippononaia) camerana subgen. et sp. nov. is described from the Aptian of the Cameros Basin of the north‐west Iberian Range. Subnippononaia fordi Barker et al., 1997 is described from new material from the Calizas de la Huérguina Formation (Late Barremian) from Las Hoyas and Buenache de la Sierra, Cuenca Province, and Subnippononaia is raised to generic status. The stratigraphy and palaeoenvironment of the Cornago G exposure of the Enciso Group where Nippononaia (Paranippononaia) camerana originates is interpreted as a fresh to brackish water system. |
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| Keywords: | Trigonioidoidea Bivalvia freshwater/brackish Early Cretaceous Spain |
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