Fig. 3
From: Functional traits data for testate amoebae of Northern Holarctic realm
Outline/shell (test) shape: (a) sphere (Difflugia urceolata); (b) hemisphere (Phryganella hemisphaerica); (c) cylinder (Cylindrifflugia lanceolata); (d) patelliform (Arcella vulgaris undulata); (e) rectangular cuboid (Heleopera petricola); (f) ovoid (Euglypha rotunda); (g) pyriform (Difflugia bacillifera); (h) spiral (Lesquereusia spiralis).
