''Sarcophilus laniarius'' is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

marsupial Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia. They are natively found in Australasia, Wallacea, and the Americas. One of marsupials' unique features is their reproductive strategy: the young are born in a r ...

in the genus '' Sarcophilus''. It is therefore closely related to the

Tasmanian devil The Tasmanian devil (''Sarcophilus harrisii''; palawa kani: ''purinina'') is a carnivorous marsupial of the family Dasyuridae. It was formerly present across mainland Australia, but became extinct there around 3,500 years ago; it is now con ...

(''S. harrisii'').

Richard Owen Sir Richard Owen (20 July 1804 – 18 December 1892) was an English biologist, comparative anatomy, comparative anatomist and paleontology, palaeontologist. Owen is generally considered to have been an outstanding naturalist with a remarkabl ...

originally named the species ''Dasyurus laniarus''. Pleistocene fossil deposits in limestone caves at

Naracoorte, South Australia Naracoorte is a town in the Limestone Coast region of South Australia, approximately 336 kilometres south-east of Adelaide and 100 kilometres north of Mount Gambier, South Australia, Mount Gambier on the Riddoch Highway (A66). History Before the ...

include specimens of ''S. laniarius'', which were around 15% larger and 50% heavier than modern devils.Owen and Pemberton, p. 35. Older specimens believed to be 50–70,000 years old were found in

Darling Downs The Darling Downs is a farming region on the western slopes of the Great Dividing Range in southern Queensland, Australia. The Downs are to the west of South East Queensland and are one of the major regions of Queensland. The name was generally ...

Queensland Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Austr ...

and in

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

. It is not clear whether the modern devil evolved from ''S. laniarius'', or whether they coexisted at the time.Owen and Pemberton, p. 36. Richard Owen argued for the latter hypothesis in the 19th century based on fossils found in 1877 in

New South Wales New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...

. It has been conjectured that ''S. laniarius'' and ''S. moornaensis'', another now-extinct larger species, may have hunted and scavenged. It is known that there were several genera and species of thylacine millions of years ago, and that they ranged in size, the smaller being more reliant on foraging.Owen and Pemberton, p. 37. As the devil and thylacine are similar, the extinction of the co-existing thylacine species has been cited as evidence for an analogous history for the devils.Owen and Pemberton, p. 38. It has been speculated that the smaller size of ''S. laniarius'' and ''S. moornaensis'' allowed them to adapt to the changing conditions more effectively and survive longer than the corresponding thylacines. As the extinction of these two species came at a similar time to human habitation of Australia, hunting by humans, as well as land clearing, have been mooted as possible causes.Owen and Pemberton, p. 39. Critics of this theory point out that as indigenous Australians only developed

boomerang A boomerang () is a thrown tool typically constructed with airfoil sections and designed to spin about an axis perpendicular to the direction of its flight, designed to return to the thrower. The origin of the word is from Australian Aborigin ...

s and spears for hunting around 10,000 years ago, a critical fall in numbers due to systemic hunting is unlikely. They also point out that caves inhabited by Aboriginal people have a low proportion of bones and rock paintings of devils, and that this is an indication that it was not a large part of indigenous lifestyle. A scientific report in 1910 claimed that Aboriginal people preferred the meat of herbivores rather than carnivores.Owen and Pemberton, pp. 40–42. The other main theory for the extinction was due to the climate change brought on by the most recent Ice Age.

References

* {{Taxonbar, from=Q194609 Prehistoric dasyuromorphs Prehistoric mammals of Australia Pleistocene marsupials Taxa named by Richard Owen Fossil taxa described in 1838