Evidence ofM‐type oxygen octahedral rotations has been observed by transmission electron microscopy in the high‐temperature rhombohedral ferroelectric (FER(HT)) state of Pb(Zr0.95Ti0.05)O3. 1/2{110} superlattice reflections were found to develop on cooling through the dielectric maximum. With further cooling (accompanying a ferroelectric‐antiferroelectric transformation), a gradual transition from 1/2{110} to 1/2{111} reflections was observed. We believe this gradual transition is due to a transformation fromM‐type toR‐type octahedral tilts on cooling. Lattice imaging in the FER(HT)state at room temperature revealed a one dimensionality in the ⟨110⟩ structural modulations. The size of the ordered regions was ∼50–100 A˚. ©1995 American Institute of Physics.