Keywords: FMIB 52520 Sponges - to illustrate choanocyles (Ch)- section o, a, calcareous sponge Ect ectoderm; Mes mesoderm; N, calcerous spicule; Eis.jpeg check categories 11 September 2015 2 Sponges to illustrate choanocyles Ch section o a calcareous sponge Ect ectoderm; Mes mesoderm; N calcerous spicule; Eis ovum Subject Sponges--Anatomy Tag Invertebrates 1903 Cite book Sea-Beach at Ebb-Tide Arnold Augusta Foote New York Century Co 1903 102 Creator Augusta Foote Arnold PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 52520 Images from the Freshwater and Marine Image Bank to check Augusta Foote Arnold Invertebrates |