How does the current definition of a "wallaby" function taxonomically within Macropodidae?
Answer
As a convenient descriptor for medium-sized macropods rather than a strict taxonomic unit
The term 'wallaby' does not represent a single, cohesive, monophyletic taxonomic unit within the large *Macropodidae* family, which also includes kangaroos, tree-kangaroos, and pademelons. Instead, the classification functions more practically as a general term used to describe macropods that fall into a medium size range, situated between the smaller relatives and the largest kangaroos. This grouping is heavily influenced by morphology and convenient size differentiation, rather than adhering strictly to a unified genetic lineage dictated only by shared ancestry.
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