Paronychomys
Paronychomys is an extinct genus of Cricetidae that existed in Arizona during the Hemphillian period.

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
- NeotominaePBDB
- 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 4.7 million years on record.
The record covers at least 9.4 Mya to 4.7 Mya. No occurrence read is dated outside 12.5 Mya to 1.4 Mya.
18 occurrences of Paronychomys on record, most of them in the Miocene. 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
18 occurrences- Miocene74%
- Pliocene20%
- Pleistocene6%
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
10 formations
- Alkali Canyon Formation3
- Dove Spring Formation2
- Quiburis Formation2
- Temecula Arkose Formation2
- Bedrock Spring Formation1
- Bidahochi Formation1
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The named rock units Paronychomys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Paronychomys and its relatives
MioceneWhere Paronychomys and its relatives were recorded in the Miocene.
Found in the same rock
251 taxa- Copemys6 sites
- Eucyon davisi6 sites
- Camelidae5 sites
- Perognathinae5 sites
- Castor4 sites
- Plesiogulo marshalli4 sites
- Pliotaxidea nevadensis4 sites
- Postcopemys valensis4 sites
- Postcopemys vasquezi4 sites
- Castor californicus3 sites
- Citellus (Otospermophilus) shotwelli3 sites
- Cupidinimus3 sites
- Cupidinimus bidahochiensis3 sites
- Dinohippus leardi3 sites
- Dipoides wilsoni3 sites
- Geomyidae3 sites
- Hypolagus vetus3 sites
- Megatylopus3 sites
- Plioceros3 sites
- Repomys3 sites
- Sorex3 sites
- Spermophilus3 sites
- Vulpes stenognathus3 sites
- Agriotherium2 sites
The Paleobiology Database records 17 sites for Paronychomys, 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
12 references- Hemphillian rodents from northern Oregon and their biostratigraphic implications4
- A review of the biostratigraphy of Pliocene and Pleistocene sediments in the Elsinore Fault Zone, Riverside County, California2
- Miocene biostratigraphy and biochronology of the Dove Spring Formation, Mojave Desert, California, and characterization of the Clarendonian mammal age (late Miocene) in California2
- Rodents of the Hemphillian age Redington local fauna, San Pedro Valley, Arizona2
- Vertebrate Paleontology of the late Miocene (Hemphillian) Wilbur Locality of Central Washington1
- Rodents and lagomorphs (Mammalia) from the Hemphillian (Late Miocene) of Utah1
- Late Tertiary basins and vertebrate faunas along the Nevada-Utah border1
- Blancan, Irvingtonian, and Rancholabrean(?) land mammal age faunas from western Riverside County, California1
- Geologic history of the El Paso Mountains region1
- Stop 16: Late Hemphillian faunas of the Texas and Oklahoma panhandles1
- Vertebrate biostratigraphy of the Ogallala Group in Nebraska1
- Small Mammals of the Hemphillian Age White Cone Local Fauna, Northeastern Arizona1
Each of the 18 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 Paronychomys
- 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 was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
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 itNeotominae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Jacobs 1977