[en] The interchange of two sets of spins in the level structure of ²¹⁹Ra observed following the alpha decay of ²²³Th and the suggestion that the ground state of ²¹⁹Ra was not observed in the heavy ion reaction spectroscopy ²⁰⁸Pb(¹⁴C,3n), allow the correlation of these levels which were previously unconnected. The resulting level structure is interpreted in terms of K =(1/2)^± and K = (5/2)^± parity doublet bands which evolve from anomalous rotational structures into vibrational-like structures with alternating spins and parities. The level structure of ²¹⁹Ra is successfully interpreted both in terms of octupole deformed (ε₃ 0.08) Nilsson levels and in terms of intermediate coupling using normal Nilsson levels with very strong octupole correlations. The levels in ²¹⁹Ra are then compared to the corresponding levels in a series of isotopic and isotonic nuclei to trace the collapse of octupole-quadrupole deformed nuclear structure into the more degenerate shell-model spectroscopy. (author)