The lesser bilby also known as the yallara, the lesser rabbit-eared bandicoot or the white-tailed rabbit-eared bandicoot. It was a rabbit-like marsupial. The species was first described by Oldfield Thomas in 1887. This species lived in the deserts of Central Australia. Since the 1950s-1960s it has been believed to be extinct. The lesser bilby was a medium-sized marsupial with a body mass of 300 to 450 grams. The tail of this animal was long, about 70% of its total head-body length. The lesser bilby was an omnivore feeding on ants, termites, roots, seeds etc.