Fig. G3: Cephalosome appendages in various copepod groups.

A: Antennule (A1) of Calanoida: (a) Neocalanus gracilis female (after Owre and Foyo, 1967); (b) Centropages typicus (male) (g: geniculation).

B: Antenna (A2): (a) Calanoid; (b1) Oncaea borealis ("Cyclopoid" poikilothermic) (after Sars, 1918); (b2) Corycaeus lautus ("Cyclopoid" poikilothermic) (after Dahl, 1852); (c) Harpacticus tenellus (Harpacticoid) (after Sars, 1921).

C: Mandible (Md): (a) Calanoid (lm: masticatory lamina); (b1) Oncaea borealis (after Sars, 1918); (b2) Collocheres gracilicauda ("Cyclopoid" siphonostome) (after Sars, 1918); (c) Zosime valida (Harpacticoid) (after Sars, 1921).

D: Maxillule (Mx1): (a) Calanoid; (b1) Pontoeciella abyssicola ("Cyclopoid" siphonostome) (after Boxshall, 1979); (b2) Oncara conifera (after Boxshall, 1977); (c) Zosime valida (Harpacticoid) (after Sars, 1921).

E: Maxilla (Mx2): (a) Calanoid; (b1) Collocheres gracilicauda (after Sars, 1921); (b2) Oncaea borealis (after Sars, 1978); (c) Danielssenia robusta (Harpacticoid) (after Sars, 1921).

F: Maxilliped (Mxp): (a) Calanoid; (b) Oncaea borealis; (c) Danielssenia robusta (Harpacticoid).