A rich material of echinoderm fragments from two Middle Cambrian stratigraphical levels on Bornholm are preserved due to phosphatization of the original calcitic stereom. Preservation of echinoderms in this way ‐ not previously recorded from the Middle Cambrian ‐ permits detailed analysis of the three‐dimensional stereom structure. Identifiable are fragments of stylophorans and eocrinoids. Stem columnals, most likely from eocrinoids, show a wide and advanced morphological variation indicating articulation similar to that of crinoids. The material from the Exsulans Limestone/Kalby marl (Ptychagnostus gibbusZone) represents stem‐bearing cystoids older thanAkadocrinusfrom Bohemia. The Andrarum Limestone (Sole‐nopleura brachymetopaZone) contains echinoderm fragments from a higher stratigraphical level, a level correlatable with that from which the oldest North American stem–bearing cystoid,Eustypocystis, has be