Above: Ventral view of parts of the poison claws or forcipules of Crussolum sp. (A) (scale bar = 1mm) with a line drawing of the head and forcipules (highlighted in purple) of a modern house centipede (B) (after Lewis 1981) for comparison. Shown are the coxosternite (cx) with socketed spines (s), 'trochanter' (tr), femuroid (fm) with spine socket (sp), femur (f), tibia (t) and the base of the apical claw (a).