Keywords: FMIB 52635 Test of sea-urchin, with the spines removed to show the arrangement of the plates, lateral view -.jpeg check categories 11 September 2015 2 Test of sea-urchin with the spines removed to show the arrangement of the plates lateral view Amb ambulacral zone with its perforated plates; Ap apiral aboral pole; Int amg Interambulacral zones Subject Sea urchins Tag Invertebrates 1903 Cite book Sea-Beach at Ebb-Tide Arnold Augusta Foote New York Century Co 1903 219 Creator Augusta Foote Arnold PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 52635 Images from the Freshwater and Marine Image Bank to check Augusta Foote Arnold Echinoidea |