Mimomys
Mimomys is an extinct genus of voles that lived in Eurasia and North America during the Plio-Pleistocene. It is believed that one of the many species belonging to this genus gave rise to the modern water voles (Arvicola). Several other prehistoric genera of vole are probably synonymous with Mimomys, including the North American Cosomys and Ophiomys.

Jonathan Chen · 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- Sits inside
- ArvicolinaePBDB
- 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 2.8 million years on record.
The record covers at least 3.6 Mya to 774 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
508 occurrences of Mimomys on record, most of them in the Pleistocene. 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
508 occurrences- Mioceneunder 1%
- Pliocene46%
- Pleistocene53%
- Holoceneunder 1%
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
34 formations
- Glenns Ferry Formation45
- Rexroad Formation9
- "unnamed sandstone" Formation7
- Khapry Formation7
- Choremi Formation6
- Alfambra Formation5
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The named rock units Mimomys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 10 further formations hold fewer occurrences each and are not listed. 374 occurrences have no formation on record, which is common for older literature.
Mimomys and its relatives
PleistoceneWhere Mimomys and its relatives were recorded in the Pleistocene.
Found in the same rock
1,249 taxa- Microtus53 sites
- Apodemus52 sites
- Beremendia fissidens48 sites
- Pliomys48 sites
- Myodes44 sites
- Allocricetus40 sites
- Apodemus sylvaticus40 sites
- Equus37 sites
- Ophiomys parvus35 sites
- Talpa fossilis33 sites
- Chiroptera30 sites
- Citellus30 sites
- Ochotona30 sites
- Sorex runtonensis29 sites
- Allophaiomys pliocaenicus27 sites
- Cricetus cricetus26 sites
- Lepus26 sites
- Sorex minutus26 sites
- Spermophilus26 sites
- Leporidae25 sites
- Rana25 sites
- Mustela palermina24 sites
- Sicista praeloriger24 sites
- Sorex24 sites
The Paleobiology Database records 356 sites for Mimomys, and this reads 240 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
130 references- Pleistocene vertebrate faunas of Hungary59
- Synonymies and reidentifications of North American fossil mammals39
- Biochronology of the Pleistocene deposits at Betfia (Bihor, Romania)25
- The Villafranchian mammalian faunas and biochronology of Greece17
- A preliminary report on the Late Pliocene Micromammalian fauna from Yangyuan and Yuxian, Hebei15
- Pliocene and Early Pleistocene arvicolids (Rodentia, Mammalia) of the Dacic Basin, Romania.13
- I giacimenti Quaternari di vertebrati fossili nell'Italia Nord-Orientale13
- Mittelpleistozane Saugetierfaunen aus Mitteleuropa - der Versuch einer biostratigraphischen Zuordnung12
- Plio-Pleistocene biogeography of Italian mainland micromammals10
- Micromamiferos del Mioceno, Plioceno y Pleistoceno de la cuenca de Guadix-Baza (Granada)10
- Cosomys primus: a case for stasis9
- The sequence of Early Pleistocene small-mammal faunas from the South Russian Plain.9
Each of the 508 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. 118 further references are not listed. 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 Mimomys
- Source
- Wikipedia/Commons
- Credit
- Jonathan Chen
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Mimomys savini · NHMUK:PAL:PV M 6968b
The description on this site
- Source
- Wikipedia, “Mimomys”
- 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 itArvicolinae through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Forsyth-Major 1902