Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Echinocyamus (apical disc comparison) Description a. Echinocyamus apicatus, female. b. Echinocyamus crispus. c. Echinocyamus convergens. d. Echinocyamus elegans.Scales 2 mm. Author Mortensen, Theodor JPG file - 142.52 kB - 1 772 x 491 pixels added on 2009-02-23969 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d... © 2009 Mortensen, Theodor Click here to return to the thumbnails overview