Scapteromys

Scapteromys is a genus of South American rodents in the tribe Akodontini of family Cricetidae. Three species are known, found in northern Argentina, southern Brazil, Paraguay and Uruguay. They are as follows:Argentine swamp rat Plateau swamp rat Waterhouse's swamp rat

Scapteromys

(c) Clara (Clari), some rights reserved (CC BY-SA) · CC BY-SA 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
Also called
swamp ratPBDB
Sits inside
AkodontiniPBDB
Diet
herbivorePBDB, for Rodentia
Life habit
ground dwellingPBDB, for Rodentia
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Eutheria

Time the record covers

At least 2.9 million years on record.

The record covers at least 3 Mya to 11.7 ka. No occurrence read is dated outside 3.8 Mya to 0 Mya.

Pliocene — about 1 of 4 occurrencesPliocenePleistocene — about 2 of 4 occurrencesPleistoceneHolocene — about 1 of 4 occurrences3.9–3.7 Mya — about 0.1 occurrences3.7–3.6 Mya — about 0.2 occurrences3.6–3.4 Mya — about 0.2 occurrences3.4–3.3 Mya — about 0.2 occurrences3.3–3.2 Mya — about 0.2 occurrences3.2–3.0 Mya — about 0.2 occurrences3.0–2.9 Mya — about 0.1 occurrences2.9–2.7 Mya — about 0.1 occurrences2.7–2.6 Mya — about 0.1 occurrences2.6–2.4 Mya — about 0.2 occurrences2.4–2.3 Mya — about 0.2 occurrences2.3–2.1 Mya — about 0.2 occurrences2.1–2.0 Mya — about 0.2 occurrences2.0–1.9 Mya — about 0.2 occurrences1.9–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.1 occurrences1.6–1.4 Mya — about 0.1 occurrences1.4–1.3 Mya — about 0.1 occurrences1.3–1.1 Mya — about 0.1 occurrences1.1–1.0 Mya — about 0.1 occurrences1.0–860 ka Mya — about 0.1 occurrences860 ka–717 ka Mya — about 0.1 occurrences717 ka–573 ka Mya — about 0.1 occurrences573 ka–430 ka Mya — about 0.1 occurrences430 ka–287 ka Mya — about 0.1 occurrences287 ka–143 ka Mya — about 0.1 occurrences143 ka–0 Mya — about 1 occurrence3 Mya11.7 ka4.3 Mya0 Mya

4 occurrences of Scapteromys on record, most of them in the Pleistocene. 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

4 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.

Found in

2 formations

Botucatu — 29.56°S, 51.40°WSan Andres — 38.12°S, 57.70°W

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The named rock units Scapteromys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Scapteromys and its relatives

Pleistocene

Where Scapteromys and its relatives were recorded in the Pleistocene.

Found in the same rock

69 taxa

The Paleobiology Database records 3 sites for Scapteromys, 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

4 references

Each of the 4 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 content2

Picture of Scapteromys

Credit
(c) Clara (Clari), some rights reserved (CC BY-SA)
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Scapteromys tumidus tumidus · UMMZ:mammals:134434

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 itAkodontini through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Waterhouse 1837