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A new fossil locality within a sequence previously assigned to the Middle Ordovician Baie D'Espoir Group in south-central Newfoundland contains fragmented crinoid columnals and brachiopods. Distinctive, pentastellate crinoid columnals, similar to those assigned to the monobathrid camerate Hexacrinites Austin and Austin by Russian authors, are named Hexacrinites? Pentastellatus n. sp. Nodal(?) columnals of this species have a circular, depressed articular facet, with a conical to bowl-like crenularium, a depressed, circular areola, a raised perilumen and a short, slender axial canal of pentagonal section. The oldest Hexacrinites sensu stricto are Late Silurian, suggesting that the fossiliferous strata have been incorrectly assigned to the Ordovician. Cross-sections of brachiopods from the same locality include an example that resembles several Early Silurian to Late Devonian pentameroid genera including Brooksina Kirk, 1922. Correlation with Late Silurian, bivalve-bearing strata SO km to the northeast would indicate that a major unconformity may occur above the fossiliferous Early and Middle Ordovician strata and the Early Ordovician ophiolite complexes.   RESUME  Un nouvel emplacement de fossiles a I'interieur d'une sequence auparavant attribute au groupe de l'Ordovicien moyen de Baie d'Espoir dans le centre-sud de Terre-Neuve renferme des fragments de columnales et de brachiopodes de crinoldes. Des columnales de crinoldes pentaetoilees caracteristiqucs, semblables a celles attributees a l’ Hexacrinites Austin and Austin a loges monobathrides par des auteurs russes, sont baptisees nouvelle espece pentastellatus d'Hexacrinites ?. Les columnales nodales(?) de cette espece sont pourvues d'une facette articulaire renfoncee et circulaire munie d'un crenularium allant de conique a bombe, d'une areole circulaire renfoncie, d'un perilumen sureleve et d'un canal axial mince et court de section pentagonalc. Les plus anciens Hexacrinites , au sens strict, remontent au Silurien superieur, ce qui permet de supposer qu'on a incorrectement attribue la strate fossilifere a l'Ordovicien. Des iechantillons representatifs de brachiopodes du meme emplacement comprennent un exemple qui ressemble a plusieurs genres de pentameroides datant du Silurien inferieur au Devonien superieur, notamment le Brooksina Kirk, 1922. Leur correlation avec des strates renfermant des bivalves du Silurien superieur a 50 km au nord-cst signale qu'une discordance importantc pourrait se presenter au-dessus des strates fossiliferes de l'Ordovicien inferieur ou moyen de meme que des complexes d'ophiolites de l'Ordovicien inferieur.  [Traduit par la redaction]

A new species of stalked crinoid (Echinodermata) of possible Late Silurian age from central Newfoundland