The cutting of γ′-particies during shear creep deformation on the macroscopic crystallographic {111} 〈110〉 shear system at T = 1025 °C and τ = 85 MPa is studied using transmission electron microscopy (TEM). It is observed that two matrix channel dislocations with different Burgers vectors join and form a superdislocation which cuts through the γ′-phase. This superdislocation moves on the (101)-plane and has a total Burgers vector of ao [010]. The results of the present investigation can be rationalized on the basis of two core configurations of this superdislocation: (i) A compact core edge type superdislocation forms and moves through the γ′-phase by noncompact slip. (ii) Two 60°-superpartials with Burgers vectors of type (ao/2) [011] and (ao/2) [011] which are associated with the (111)- and the (111)-plane, respectively, move by a combined process of glide and climb. The experimental TEM images do not allow to differentiate between these two scenarios.