Journal
ANNALES DE PALEONTOLOGIE
Volume 105, Issue 1, Pages 21-38Publisher
MASSON EDITEUR
DOI: 10.1016/j.annpal.2018.10.004
Keywords
Veneroida; Bivalves; Upper Cenomanian; Guir Basin; Algeria
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The Upper Cretaceous rocks are widely distributed and well exposed in south Algeria and consist in beds rich in macrofauna. For the first time, twenty veneroid species (Bivalvia) are systematically described from the upper Cenomanian deposits of the Guir Basin. While three species were reported since long before [Granocardium desvauxi (Coquand), G. productum (J. de C. Sowerby) and Glossus aquilinus (Coquand)]; Lucina fallax Forbes, Crassatella (Rochella) tenuicostata (Seguenza), Protocardia hillana (J. Sowerby), G. productum a. de C. Sowerby) var. byzacenica (Pervinquiere), Arctica cordata (Sharpe), A. humei (Cox), A. inornata (d'Orbigny), A. picteti (Coquand), Tenea delettrei (Coquand), Paraesa faba (J. de C. Sowerby). Meretrix desvauxi (Coquand) were previously unknown from the Cretaceous of Algerian Sahara. Because of reduced degree of preservation, Sphaera cf. corrugata J. Sowerby. Maghrebella cf. forgemoli (Coquand), Maghrebella sp., Granocardium cf. carolinum (d'Orbigny), Protocardia sp. and Meretrix sp. are tentatively determined. The studied material, found in the lower part of the Calcaires de Sidi Mohamed Ben Bouziane Formation, evidences palaeobiogeographic affinities occurring over a wide geographical area: from North Africa, southern Europe to Middle East and India. The present study provides new information to the knowledge of the upper Cenomanian palaeobiology of the studied region. (C) 2018 Elsevier Masson SAS. All rights reserved.
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