The distribution of the conserved vertebrate telomeric sequence (T₂AG₃)_n was examined by fluorescence in situ hybridization in the six <i>Petrogale</i> (rock wallabies) taxa of the <i>lateralis</i> complex. As expected, the (T₂AG₃)_n sequence was located at the termini of all chromosomes in all taxa. However, the sequence was also present at several nontelomeric (viz., interstitial and centromeric) sites. The signals identified were associated with either ancient rearrangements involved with the formation of the 2n = 22 plesiomorphic macropodine karyotype or more recent rearrangements associated with karyotypes derived from the 2n = 22 karyotype. Interstitial (T₂AG₃)_n signals identified on chromosomes 3 and 4 in all six species of the <i>lateralis</i> complex and a large centromeric signal identified on chromosome 7 in the five subspecies/races of <i>P. lateralis</i> appear to be related to the more ancient rearrangements. Subsequent chromosome evolution has seen these signals retained, lost, or amplified in different <i>Petrogale</i> lineages. Within the <i>lateralis</i> complex, in two submetacentric chromosome derived by recent centric fusions, the telomeric sequence was identified at or near the centromere, indicating its retention during the fusion process. In the two taxa where chromosome 3 was rearranged via a recent centromeric transposition to become an acrocentric chromosome, the telomeric signal was located interstitially.