Description Caloprymnus campestris By John Gould (died 1881) - Mammals of Australia
Author John Gould (1804–1881) https://en.wikipedia.org/wiki/John_Gould
Source: https://commons.wikimedia.org/wiki/File:Caloprymnus.jpg

The desert rat-kangaroo (Caloprymnus campestris), also called the buff-nosed rat-kangaroo, plains rat-kangaroo or oolacunta, is an extinct small hopping marsupial endemic to desert regions of Central Australia. It was discovered in the early 1840s and described by John Gould in London in 1843, on the basis of three specimens sent to him by George Grey, the governor of South Australia at the time. Order: Diprotodontia, Family: Potoroidae, Genus: Caloprymnus, Species: Caloprymnus campestris (Gould, 1843)