Abstract

HLEBSZEVITSCH, Julio Constantino. Crinoids of the subclass CAMERATA (Camptocrininae, Dichocrinidae and Glyptocrinina) from the Tepuel -Genoa basin, upper Palaeozoic of Patagonia, Argentina. Ameghiniana [online]. 2005, vol.42, n.3, pp.597-610. ISSN 1851-8044.

Camerate crinoids are described from the Tepuel Genoa basin, western Argentine Patagonia. The material consists of fragmented calyxes belonging to the subfamily Camptocrininae, family Dichocrinidae and suborder Glyptocrinina. They were found at several localities and horizons of Late Carboniferous and Early Permian age. The dichocrinids and camptocrinids have an earlier record in Patagonia than in Australia. This diachronism of southern Gondwana crinoids favours the interpretation of the migration of faunas from west to east, following the proposed similar shift of glacial conditions. New species described are: Camptocrinus mollensis sp. nov., ø Camptocrinus patagoniensis sp. nov., ø Camptocrinus bezouglovae sp. nov. and ø Camptocrinus olartei sp. nov.

Keywords : Camerate Crinoids; Carboniferous-Permian; Patagonia; Argentina.