Prosciurus
Prosciurus is an extinct genus of rodents in the family of Aplodontiidae.

Uncredited · CC0 · via Wikidata/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
- AplodontiidaePBDB
- Diet
- herbivorePBDB, for Aplodontiidae
- Life habit
- fossorialPBDB, for Aplodontiidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 16 million years on record.
The record covers at least 37 Mya to 20.45 Mya. No occurrence read is dated outside 39.7 Mya to 15.98 Mya.
40 occurrences of Prosciurus 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
40 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
12 formations
- Chadron Formation6
- Brule Formation6
- Hsanda Gol Formation6
- Cypress Hills Formation3
- White River Formation3
- Renova Formation2
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The named rock units Prosciurus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.
Prosciurus and its relatives
OligoceneWhere Prosciurus and its relatives were recorded in the Oligocene.
Found in the same rock
587 taxa- Brontotheriidae16 sites
- Palaeolagus temnodon13 sites
- Herpetotherium fugax11 sites
- Adjidaumo minimus10 sites
- Ischyromys veterior10 sites
- Megalagus brachyodon10 sites
- <Novacek leptictid>9 sites
- Douglassciurus jeffersoni9 sites
- Leptomeryx9 sites
- Aulolithomys bounites8 sites
- Eomyidae8 sites
- Equidae8 sites
- Hesperocyon8 sites
- Hesperocyon gregarius8 sites
- Oligoryctes cameronensis8 sites
- Paradjidaumo trilophus8 sites
- Pseudocylindrodon neglectus8 sites
- Trigenicus profectus8 sites
- Centetodon chadronensis7 sites
- Leptomeryx speciosus7 sites
- Micropternodus borealis7 sites
- Poebrotherium7 sites
- Adjidaumo minutus6 sites
- Ankylodon6 sites
The Paleobiology Database records 37 sites for Prosciurus, 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
20 references- Aplodontid Rodents (Mammalia) from the Oligocene (Orellan and Whitneyan) Brule Formation, Nebraska6
- Correlation of the early Oligocene (Chadronian) in northwestern Nebraska5
- New Oligocene sciurids and aplodontids (Rodentia, Mammalia) from Mongolia4
- Eocene-Oligocene faunas of the Cypress Hills Formation, Saskatchewan3
- Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana3
- Mammalian Range Zones in the Chadronian White River Formation at Flagstaff Rim, Wyoming3
- The record of Aplodontidae (Rodentia, Mammalia) in the Oligocene and Miocene of the Valley of Lakes (Central Mongolia) with some comments on the morphologic variability2
- The Aragonian vertebrate fauna of Xiacaowan, Jiangsu2
- Small mammals of the Horse Locality Fauna (Latest Chadronian: Eocene), Cypress Hills Formation1
- Rodents (Mammalia) from the Pilgrim Creek Local Fauna, Wyoming: a mixed Eocene and Oligocene assemblage (Duchesnean To Whitneyan)1
- Rodents from the Chadronian (latest Eocene) Medicine Pole Hills local fauna, North Dakota. Part 2. Ischyromidae, Sciuravidae, Aplodontidae, Sciuridae and Heliscomyidae1
- Mammals from the Blue Ash Local Fauna (Late Oligocene), South Dakota. Rodentia, Part 4: family Aplodontidae1
Each of the 40 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. 8 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 Prosciurus
- Source
- Wikidata/Commons
- Credit
- nobody named on the record
- Licence
- CC0
- 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
- Prosciurus relictus · usnm:paleobiology:437793
The description on this site
- Source
- Wikipedia, “Prosciurus”
- 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 itAplodontiidae through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew 1903)