De quelques faunes des gres inferieurs sur la bordure septentrionale du Hoggar (Sahara)

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Abstract
The recent discovery of fossils in the rarely fossiliferous sandstones unconformably overlying Precambrian metamorphic rocks on the north border of the Ahaggar massif (Algeria) demonstrates the presence of Ordovician and Gotlandian (Silurian) deposits in these formations. Three new species are described--the brachiopod Dinobolus? amguidensis, the pelecypod Modiolopsis? tiounkelinensis, and Problematicum sahariense, an unidentified shell that is either a brachiopod or a pelecypod.

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