Calomys tener
The delicate vesper mouse is a South American rodent species of the family Cricetidae. It is found in Argentina, Bolivia and Brazil. Its karyotype has 2n = 66 and FN = 66.

Unknown author Unknown author · 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- Also called
- delicate vesper mousePBDB
- Sits inside
- CalomysPBDB
- Diet
- herbivorePBDB, for Rodentia
- Life habit
- ground dwellingPBDB, for Rodentia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 2.6 million years on record.
Every occurrence read is dated to somewhere between 2.58 Mya and 0 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Calomys tener 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
2 occurrences- Pleistocene100%
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.
Calomys tener and its relatives
PleistoceneWhere Calomys tener and its relatives were recorded in the Pleistocene.
Found in the same rock
66 taxa- Desmodus2 sites
- Didelphidae2 sites
- Gracilinanus2 sites
- Monodelphis domestica2 sites
- Monodelphis kunsi2 sites
- Necromys2 sites
- Oligoryzomys2 sites
- Oryzomyini2 sites
- Oryzomys2 sites
- Oryzomys subflavus2 sites
- Proechimys2 sites
- Sigmodontinae2 sites
- Sturnira2 sites
- Thrichomys2 sites
- Thylamys2 sites
- Tonatia2 sites
- Akodon1 site
- Akodontini1 site
- Ameiva ameiva1 site
- Artibeus1 site
- Artibeus (Artibeus) obscurus1 site
- Boa constrictor1 site
- Bothrops1 site
- Calomys expulsus1 site
The Paleobiology Database records 2 sites for Calomys tener, 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
1 referenceEach of the 2 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Calomys tener
- Source
- Wikipedia/Commons
- Credit
- Unknown author Unknown author
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Calomys tener 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 itCalomys through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Winge 1887)