Isolated tubercles of some Palaeoscolecida

Abstract

Tubercles of Palaeoscolex? tenensis Kraft & Mergl, 1989 found as isolated phosphatic microfossils in Ordovician limestones are described. The probability that the phosphatic microfossils assigned to the genera Hadimopanella Gedik, 1977 and Milaculum Muller, 1973 represent tubercles of palaeoscolecidans is discussed. A relation between Palaeoscolecida and Chordata is hinted at.