Fig. 3.

Schematic illustration of prey capture among different radiolarian orders.

A. Nassellaria: the ‘terminal cone (TC)’ comprises several ‘terminal projections’ (TP) and the ‘axial projection’ (AxP). Prey capture (here a ciliate) involves the different pseudopodia of the ‘terminal cone’.

B. Spumellaria: prey capture (here a copepod) involves many axopodia (Axo) radiating in all directions and forming a dense pseudopodial network.

C. Collodaria: prey capture (here some tintinnids) is similar to Spumellaria and involves a dense axopodial network surrounding the specimen.