A new integrated search interface will become available in the next phase of marineinfo.org.For the time being, please use IMIS to search available data PeopleInstitutesProjectsData setsPublicationsEvents IMIS Photogallery » ReferencesHolectypoida (aboral)Description With their round tests, non-petaloid ambulacra and central peristome they resemble their regular ancestors. The periproct lies on the upper side near the posterior margin.Length 27 mm; Upper Cretaceous, France.Author Schultz, HeinkeJPG file - 226.33 kB - 1 042 x 1 006 pixelsadded on 2005-02-23204 viewsFrom reference Schultz, H. (2006). Sea urchins: A guide to worldwide sha...© 2005 Schultz, HeinkeClick here to return to the thumbnails overview