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Lower Cambrian helcionelloid molluscs are described from the Pedroche Formation in Sierra de Cordoba, southern Spain. The molluscan fauna occurs together with abundant and diverse Small Shelly Fossils (SSF) in limestone units and limestone nodules within terrigenous units. The molluscs are assigned to three new genera and six new species. Three species are previously known from North Siberia and one...
The bradoriids Hipponicharion aff. hispanicum and Wimanicharion aff. matthewi are reported from the lower and middle Cambrian strata of the Cadenas Ibericas, Spain. The genus Hipponicharion seems to be restricted to the Acadobaltic Province. Wimanicharion has been recorded from Sweden and Canada (Nova Scotia). The new discovery of Wimanicharion in Spain indicates its similar palaeobiogeographical...
Three hundred protaspid and meraspid specimens of the trilobite species Alueva undulata Sdzuy, 1961 from the uppermost Bilbilian limestones of the Valdemiedes Formation (Iberian Chains, NE Spain) have been released by the action of acid. A paedomorphocline is proposed embracing the different species of Alueva, based on the comparison of the ontogenic patterns of the species Alueva undulata Sdzuy,...
Several new fossiliferous Pliocene localities have been identified in the continental deposits of the area of Tollo de Chiclana (Guadix Basin, SE Spain), that have yielded a rich rodent and insectivore fauna. In this paper, we study the Arvicolidae from these localities. Remains adscribed to the genera Dolomys, Mimomys and Kislangia have been found, which are very interesting from a biostratigraphical...
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