Abstract

Although poorly fossiliferous, the middle Keuper so-called Beaumont dolomite formation (Triassic) of Lorraine, France, contains some fossils, some of which are here described--pelecypods and the alga Cancellophycus keuperinus n.sp. Concentric structures on the surface of dolomitic limestone slabs from the formation, previously considered impressions of algae, are shown to be of syngenetic, inorganic origin.

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