Campanian-Maastrichtian pelagic crinoids from NE Belgium and SE Netherlands: preliminary observations

During recent years unexpectedly rich and diverse faunules of diminutive, pelagic crinoids of the order Roveacrinida SIEVERTS-DORECK in MOORE, LALICKER & FISCHER, 1952 have been collected from early and late Campanian and late Maastrichtian strata in the Maastrichtian type area (southern Limburg, The Netherlands, and contiguous areas). Most, if not all, of these forms appear to be still undescribed. Occurrences known to date are briefly discussed; a taxonomic study with detailed descriptions of the various species is under way.