CARPOZOAN ECHINODERMS FROM THE MIDDLE CAMBRIAN (MAYAKTAKH FORMATION) OF SIBERIA (LOWER REACHES OF THE LENA RIVER)

Abstract

Two new monotypic genera and a new monotypic family Rozanovicystidae of the class Cincta are described from the Middle Cambrian (Mayaktakh Formation) of the northeastern part of the Siberian Platform. Based on data obtained by morphofunctional analysis, there is a possibility that these animals could move by jet propulsion by ejecting water from the opercular aperture. Probable homologies of the main skeletal parts are discussed. © Pleiades Publishing, Inc. 2006.