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).