Data PolicyPublications | Persons | Institutes | Projects IMIS Photogallery » References Acanthocidaris hastigera (primary spines) Description Primary spines of aboral and oral (above left) side. The shaft of the spines is set with distinct ridfes here partly overgrown by colonies of bryozoae.Length of longest spine 105 mm.ZMUC Author Schultz, Heinke JPG file - 147.20 kB - 1 654 x 739 pixels added on 2011-02-23233 viewsFrom reference Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Click here to return to the thumbnails overview