''Coryphomys'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus of

rat Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus ''Rattus''. Other rat genera include ''Neotoma'' ( pack rats), ''Bandicota'' (bandicoot ...

s, known from

sub-fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...

s found on

Timor Timor is an island at the southern end of Maritime Southeast Asia, in the north of the Timor Sea. The island is East Timor–Indonesia border, divided between the sovereign states of East Timor on the eastern part and Indonesia on the western p ...

. Its name is

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

for "top-of-the-head

mouse A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus' ...

" or "summit mouse". Species include '' Coryphomys buhleri'' and '' Coryphomys musseri''. Archaeological research on East Timor has revealed the bones of rats weighing up to 6 kilograms (13.2 pounds) when adult. They seem to have died out between 1000 and 2000 years ago, perhaps due to large-scale forest clearance for farming. In 2015, the discovery of fossils of "seven new species of giant rat", including the "largest rat ever" on the island of East Timor was announced. The biggest of these rats was described as weighing "five kilos (11 pounds), the size of a small dog," and was referred to as the "Giant Rat" in news stories."Giant Rat Species in East Timor Was Largest Ever"
/ref>

References

External links

*https://web.archive.org/web/20100729135507/http://io9.com/5596239/2000+year+old-giant-rat-was-forty-times-bigger-than-its-modern-relatives

*http://news.discovery.com/animals/giant-rat-fossil-discovered.html *http://www.neatorama.com/2010/07/26/skeleton-of-giant-rat-discovered/ {{Taxonbar, from=Q1041375 Extinct mammals of Asia Rodent genera Extinct rodents Holocene extinctions Fossil taxa described in 1937