Petrogale

…Among the mammals belonging to the marsupial family Macropodidae, these animals resemble kangaroos (Macropus genus) but are smaller than them. A general term for animals belonging to the genus Lagorchestes (rabbit-wallaby), genus Petrogale (rock-wallaby), genus Onychogalea ( paddy-wallaby), genus Thylogale (paddy-wallaby), genus Protemnodon (wallaby), etc. There are about 35 species, but in the narrow sense it refers to about 10 species belonging to the genus Wallaby. It is difficult to distinguish them from their appearance except for their size, but they are characterized by their slender body shape, small hind legs, and thin tail compared to kangaroos. …

*Some of the terminology explanations that mention "Petrogale" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…有袋目カンガルー科に属する哺乳類のうち，姿がカンガルー(カンガルー属)に似るが，それよりも小型の動物。ウサギワラビー属Lagorchestes，イワワラビー属Petrogale，ツメオワラビー属Onychogalea，ヤブワラビー属Thylogale，ワラビー属Protemnodonなどに属する動物の総称で，約35種あるが，狭義にはワラビー属に属する約10種を指す。大きさを除くと外観から区別することはむずかしいが，からだつきがカンガルーに比べてきゃしゃで，後足が小さく，尾が細いのが特徴。…

※「Petrogale」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報