Rattus exulans

The Polynesian rat, Pacific rat or little rat, or kiore, is the third most widespread species of rat in the world behind the brown rat and black rat. Contrary to its vernacular name, the Polynesian rat originated in Southeast Asia, and like its relatives has become widespread, migrating to most of Polynesia, including New Zealand, Easter Island, and Hawaii. It shares high adaptability with other rat species extending to many environments, from grasslands to forests. It is also closely associated with humans, who provide easy access to food. It has become a major pest in most areas of its distribution.

Rattus exulans

Forest and Kim Starr · CC BY 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Sits inside
RattusPBDB
Diet
herbivore, insectivorePBDB, for Muridae
Life habit
ground dwellingPBDB, for Rattus
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At most 129 thousand years on record.

Every occurrence read is dated to somewhere between 129 ka and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pleistocene — about 2 of 54 occurrencesPleistoceneHolocene — about 52 of 54 occurrences147 ka–126 ka Mya — about 0.1 occurrences126 ka–105 ka Mya — about 0.3 occurrences105 ka–84 ka Mya — about 0.3 occurrences84 ka–63 ka Mya — about 0.3 occurrences63 ka–42 ka Mya — about 0.3 occurrences42 ka–21 ka Mya — about 0.3 occurrences21 ka–0 Mya — about 52 occurrences629 ka0 Mya

54 occurrences of Rattus exulans on record, most of them in the Holocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

54 occurrences

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Rattus exulans and its relatives

Holocene

Where Rattus exulans and its relatives were recorded in the Holocene.

Found in the same rock

206 taxa

The Paleobiology Database records 54 sites for Rattus exulans, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

9 references

Each of the 54 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Rattus exulans

Credit
Forest and Kim Starr
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Rattus exulans was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itRattus through timeFormations of the HoloceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Peale 1848)