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
 Atelostomata (apical system) Description The two extant orders differ in the plate scheme of the apical system: Left: Holasteroida: The arrangement is elongated, the ocular plates OII and OIV toch each other and separate the anterior (G2/G3) and the posterior (G4/G1) genital plates. The ocular plates OI and OV form the posterior end (Corystus relictus; modified after Mooi & David 1996). Right: Spatangida: The apical system is more compact, the enlarged genital plate G2 (madreporite) expands to the posterior, separating G1 and G4 and the ocular plates O I and O V (Brissus; after Mortensen 1951).Scale 2 mm.JPG file - 138.41 kB - 2 332 x 1 032 pixelsadded on 2009-02-233 384 viewsFrom reference Schultz, H. (2009). Sea urchins II: Worldwide irregular d...© 2009 Schultz, Heinke Click here to return to the thumbnails overview |
