Rock-wallaby

The rock-wallabies are the wallabies of the genus Petrogale. The genus was established in 1837 by John Edward Gray in a revision of material at the British Museum of Natural History. Gray nominated his earlier description of Kangurus pencillatus as the type species, now recognised in the combination Petrogale penicillata (brush-tail rock-wallaby). The author separated the species from the defunct genus Kangurus, which he proposed to divide in his synopsis of the known macropod species. The following is a list of species, with common names, arranged by alliances of species-groups, A genus with a high degree of speciation, driven in part by their fidelity to complex habitats that have phylogeographically isolated. Petrogale is the most diverse macropod genus, with workers identifying seventeen species and further cryptic taxa in taxonomic revisions to 2014.The species occur in a weight range of 1–12 kilograms, relatively small to medium sized marsupials.