Prehistoric thylacines

species of mammal (fossil)

thumb|Life restoration Nimbacinus is an extinct genus of thylacinid contains two species of carnivorous, quadrupedal marsupials in Australia both of which are extinct: Nimbacinus dicksoni Muirhead & Archer, 1990 Nimbacinus peterbridgei Churchill, Archer & Hand, 2024

Badjcinus is an extinct thylacinid marsupial. It is the earliest and most primitive known thylacinid, living 23 to 28 million years ago in the late Oligocene.

Mutpuracinus archibaldi is an extinct carnivorous, quadrupedal marsupial that lived during the middle Miocene and is the smallest known thylacinid at approximately 1.1 kilograms, the size of a quoll, though, more closely related to the recently extinct thylacine.

Muribacinus is an extinct genus of thylacinid that lived during the middle Miocene in what is now northwestern Queensland, Australia. It was described in 1995 from remains collected at the Riversleigh World Heritage Area. Only one species is known, M. gadiyuli.

Maximucinus is an extinct genus of thylacinid that lived during the Middle Miocene in what is now Queensland, Australia. It is known only a second upper molar found at the Riversleigh World Heritage Area. It was the largest thylacinid of its time, attaining a body size of 18 kg (40 lbs). The genus is monotypic, containing only one species, Maximucinus muirheadae.

Tyarrpecinus is an extinct genus of thylacinid that lived during the late Miocene in what is now the Northern Territory, Australia. It is known only from a partial skull bone that was reconstructed from numerous fragments. It was a small thylacinid and represents a late surviving relict. The genus is monotypic, containing only one species, Tyarrpecinus rothi.

Ngamalacinus is an extinct genus of thylacinid that lived in Australia from about 26 to 16 million years ago. Its fossils are solely known from the Riversleigh World Heritage Area in Queensland. Two species are currently known, the Early Miocene N. timmulvaneyi and the Late Oligocene N. nigelmarveni. In appearance it resembled a dog with a long snout. Its molar teeth were specialized for carnivory, the cups and crest were reduced or elongated to give the molars a cutting blade.

Wabulacinus is a poorly known genus of thylacinid marsupial from Early Miocene and possibly Late Oligocene deposits at the Riversleigh World Heritage Area in Queensland. It consists of two species, the type species W. ridei and W. macknessi. The snout of W. ridei was relatively broad, while W. macknessi had a noticeably elongated skull. Both species are thought to have been hypercarnivorous.