Tyarrpecinus rothi is an extinct thylacinid marsupial that lived during the late Miocene and has been found at the Alcoota scientific reserve in the Northern Territory. The specific name honors Karl Roth for his contributions to the natural history of central Australia. T. rothi is known from a holotype left maxillary fragment and was reassembled from a concentration of small bone and tooth fragments. Most of the fragments exhibit chemical erosion and have a layer of calcite.