Macrognathomys nanus

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
- MacrognathomysPBDB
- 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 7.8 million years on record.
Every occurrence read is dated to somewhere between 12.5 Mya and 4.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
3 occurrences of Macrognathomys nanus 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
3 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
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The named rock units Macrognathomys nanus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Macrognathomys nanus and its relatives
MioceneWhere Macrognathomys nanus and its relatives were recorded in the Miocene.
Found in the same rock
59 taxa- Copemys dentalis2 sites
- Copemys esmeraldensis2 sites
- Diprionomys parvus2 sites
- Hesperolagomys galbreathi2 sites
- Hypolagus fontinalis2 sites
- Leptodontomys2 sites
- Marmotini2 sites
- Perognathinae2 sites
- Scalopoides2 sites
- Aepycamelus robustus1 site
- Alluvisorex chasseae1 site
- Ammospermophilus junturensis1 site
- Anouroneomys minimus1 site
- Archaeolaginae1 site
- Camelidae1 site
- Colbertchoerus niobrarensis1 site
- Copemys loxodon1 site
- Cricetidae1 site
- Dipodomyinae1 site
- Dipoides stirtoni1 site
- Domninoides riparensis1 site
- Epicyon saevus1 site
- Eucastor malheurensis1 site
- Hesperogaulus1 site
The Paleobiology Database records 3 sites for Macrognathomys nanus, 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
2 references- Pliocene mammals of southeast Oregon and adjacent Idaho2
- The Pliocene mammalian faunas of Nevada, U.S.A1
Each of the 3 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 Macrognathomys nanus
- 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 Macrognathomys nanus 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 itMacrognathomys through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1930