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Oliveira & Wagner-Gentis | 
1983 | 
The Mértola and Mira formation boundary between Dogueno and Almada de Ouro, marine Carboniferous of South Portugal.	 
Contr. Carboniferous Geol. Palaeont. Iberian Peninsula (Ed.: Lemos de Sousa,M.J.): 1-39, fig.1-14, pl.1-9; Porto.	 
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