Seven crinoid species and one very unusual column are recognized from the Ordovician, Dobrotivian (Llandeillian Stage) to Ashgill of Spain. Three previously described species, Heviacrinus melendezi Gil Cid, Domínguez, and Silván, 1996; Coralcrinus sarachagorum Gil Cid, Domínguez, and Silván, 1998; and Ortsaecrinus cocae Gil Cid, Domínguez, Torres, and Jiménez, 1999, are considered, and four new species assigned to three new genera are described herein, including Visocrinus castelli, Fresnedacrinus ibericus, Morenacrinus silvani, and Merocrinus millanae. Previous reports of Ramseyocrinus from Spain have been revised, and we agree that this disparid is not presently known from Spain. These crinoids represent the largest Ordovician crinoid fauna from Gondwana, including these localities and those from the Montagne Noire along peri-Gondwana during the Ordovician. The crinoids reported here, from the Montes de Toledo and Sierra Morena, and the Ordovician crinoids from Montagne Noire have very little in common with Ordovician crinoids from the Prague Basin. Thus, these new data support paleogeographic plate positioning that allows for either paleoclimatic, paleoenvironmental, or paleogeographic isolation between the Prague Basin and peri-Gondwana.

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RESUMENSe describe un ejemplar de Macrocystella Callaway, 1877, procedente del Caradoc de El Viso del Marqués, provincia de Ciudad Real. El género Macrocystella es el único descrito para la familia Macrocystellidae y se trata de un taxón de especial interés al ser considerado uno de los Glyptocystitida más primitivos de los que derivarían los rombífe-ros con pectinirrombos. El género estaba hasta la fecha restringido al Ordovícico inferior y medio, resultando ser éste el primer hallazgo incuestionable de Macrocystella en materiales de edad Ordovícico superior; siendo, por otro lado, la primera especie que se describe para España, la cual proponemos denominar Macrocystella pauli.Palabras clave: Ordovícico, Caradoc, Sierra Morena, Macrocystella, Glyptocystitida, Rhombifera, Cistideo, Echinodermata. ABSTRACTA new species of Macrocystella Callaway, 1877, based on a specimen, from the Caradoc of El Viso del Marqués (Ciudad Real province, Spain) is described and named Macrocystella pauli. The family Macrocystellidae contains only the one genus Macrocystella which is considered to be the most primitive glyptocystitid from which later rhombiferans with pectinirhombs were derived. This paper presents the first record of Macrocystella from Spain and the first undoubted record from the Upper Ordovician.