Collections Search for objects: 15 matching records Animal/vegetable/mineral Zoology (15) Taxonomic groups PourtalesiidaeAnimalia (15)Echinodermata (15)Echinoidea (15)Holasteroida (14)Spatagocystis (9)Spatagocystis challengeri (9)Helgocystis (4)Helgocystis carinata (4)Ceratophysa (1)Ceratophysa ceratopyga (1)Holasteroidea (1)Pourtalesia sp. (1) Name Spatagocystis challengeri (9)Helgocystis carinata (4)Ceratophysa ceratopyga (1)Pourtalesia sp. (1) Form Dry (2) Area or Water body Eastern Indian Ocean (15)Indian Antarctic Ridge (15) Holding institution Natural History Museum, London (13)Museum of Comparative Zoology, Harvard University (2) Station 157 Sea urchin (Spatagocystis challengeri) Sea urchin (Ceratophysa ceratopyga) Sea urchin (Spatagocystis challengeri) Sea urchin (Helgocystis carinata) Sea urchin (Pourtalesia sp.) Sea urchin (Spatagocystis challengeri) Sea urchin (Spatagocystis challengeri) Sea urchin (Helgocystis carinata) Sea urchin (Spatagocystis challengeri) Sea urchin (Helgocystis carinata) Sea urchin (Helgocystis carinata) Sea urchin (Spatagocystis challengeri) Sea urchin (Spatagocystis challengeri) Sea urchin (Spatagocystis challengeri) Sea urchin (Spatagocystis challengeri) [1]