The larger benthic foraminifera genus Orbitolinopsis Silvestri exhibits a discontinuous stratigraphic record (Late Berriasian–middle Cenomanian, Coniacian–early Santonian, ?late Maastrichtian). Orbitolinopsis senonicus is a species that marks the reappearance of the genus several million years after the Cenomanian–Turonian faunal turnover which eliminated all k-strategist larger benthic foraminifera. The type-material of this poorly-known species, stored at the Basel Natural History Museum, was restudied. The existence of a pseudo-keriothecal wall structure, as indicated in the original description, and that would exclude attribution to Orbitolinopsis, could not be confirmed. The internal test structure clearly shows the septal infoldings (“cupules”) typical for the genus and well-known from Early Cretaceous representatives. Therefore O. senonicus is confirmed as a remarkable Late Cretaceous representative of Orbitolinopsis and adds to our understanding of faunal recovery in the period after the end-Cenomanian extinction event. The critical literature review for the synonymy list concludes in the description of a new species, Orbitolinopsis bilottei sp. nov from the Campanian of SW France, being more complex than O. senonicus.

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