The diversity of fishes represented in upper Paleocene microfossil localities in the Ravenscrag Formation near Roche Percée, Saskatchewan, is documented. Thirteen kinds of fishes are recognized. Two ...
Les marnières sont des cavités souterraines artificielles, souvent issues de l'extraction de la marne, une roche sédimentaire argilo-calcaire utilisée principalement comme amendement agricole et ...
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