Distribution of stars in En − L_z space, where the contours indicate the extent of mock dwarf galaxies placed on top of the debris of Sequoia and Thamnos 1 and 2. The inner contour is for a dwarf galaxy of M_⋆ = 5 × 10⁶ M_⊙ and the outer for M_⋆ = 10⁸ M_⊙. In the background we show all stars with halo-like kinematics within 3 kpc with small dots, see Sect. 2, with those belonging to selected structures colour-coded as in Fig. 2.