Allomys

via iDigBio · via iDigBio. 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
- AllomyinaePBDB
- Diet
- herbivorePBDB, for Aplodontiidae
- Life habit
- fossorialPBDB, for Aplodontiidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 13 million years on record.
The record covers at least 29.5 Mya to 16.3 Mya. No occurrence read is dated outside 31.8 Mya to 12.5 Mya.
13 occurrences of Allomys on record, most of them in the Oligocene. 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
13 occurrencesThese 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
3 formations
- John Day Formation9
- Colter Formation1
- Valentine Formation · Ogallala Group1
Loading coastlines…
The named rock units Allomys 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.
Allomys and its relatives
OligoceneWhere Allomys and its relatives were recorded in the Oligocene.
Found in the same rock
326 taxa- Daphoenus6 sites
- Miohippus6 sites
- Promerycochoerus superbus6 sites
- Archaeotherium5 sites
- Capacikala gradatus4 sites
- Cormocyon copei4 sites
- Diceratherium4 sites
- Eporeodon occidentalis4 sites
- Mesocyon brachyops4 sites
- Nimravus brachyops4 sites
- Agriochoerus guyotianus3 sites
- Dyticonastis rensbergeri3 sites
- Enhydrocyon stenocephalus3 sites
- Gentilicamelus sternbergi3 sites
- Hypertragulus calcaratus3 sites
- Hypertragulus hesperius3 sites
- Meniscomys3 sites
- Miospermophilus3 sites
- Oreodontoides oregonensis3 sites
- Paradaphoenus cuspigerus3 sites
- Pleurolicus sulcifrons3 sites
- Rhizocyon oregonensis3 sites
- Agnotocastor2 sites
- Archaeotherium caninus2 sites
The Paleobiology Database records 13 sites for Allomys, 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
8 references- Revised chronostratigraphy and biostratigraphy of the John Day Formation (Turtle Cove and Kimberly Members), Oregon, with implications for updated calibration of the Arikareean North American land mammal age4
- Successions of meniscomyine and allomyine rodents (Aplodontidae) in the Oligo-Miocene John Day Formation. Oregon3
- Mammals from the Blue Ash Local Fauna (Late Oligocene), South Dakota. Rodentia, Part 4: family Aplodontidae1
- Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas1
- Synonymies and reidentifications of North American fossil mammals1
- John Day Basin paleontology field trip guide and road log: Society of Vertebrate Paleontology1
- Rodents of the Mio-Pliocene Norden Bridge local fauna, Nebraska1
- Observations on the faunae of the Miocene Tertiaries of Oregon1
Each of the 13 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 Allomys
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Allomys was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAllomyinae through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Marsh 1877