Figure 6. Medium-scale waterblasting and needle preparation of a regular echinoid, Stereocidaris sp., from the Middle Danian Bryozoan Limestone (Tylocidaris abildgaardi Biozone) at Kulsti Rende, Stevns Klint. GM 2004.921. Scale bar 10 mm. 1. Before preparation. 2-5. Successive stages in preparation.