Gregorymys formosus
No picture of Gregorymys formosus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gregorymys formosus, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- GregorymysPBDB
- 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 6.2 million years on record.
Every occurrence read is dated to somewhere between 24.7 Mya and 18.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
14 occurrences of Gregorymys formosus 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
14 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
4 formations
- Monroe Creek Formation7
- Harrison Formation3
- Rosebud Formation2
- Wildcat Hills Beds Formation · Arikaree Group1
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The named rock units Gregorymys formosus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Gregorymys formosus and its relatives
OligoceneWhere Gregorymys formosus and its relatives were recorded in the Oligocene.
Found in the same rock
104 taxa- Proscalops secundus5 sites
- Herpetotherium youngi4 sites
- Protospermophilus4 sites
- Alwoodia harkseni3 sites
- Florentiamys3 sites
- Gripholagomys lavocati3 sites
- Leidymys3 sites
- Palaeocastor fossor3 sites
- Parvericius3 sites
- Promylagaulus riggsi3 sites
- Alwoodia2 sites
- Amphechinus horncloudi2 sites
- Castoridae2 sites
- Entoptychus grandiplanus2 sites
- Florentiamys tiptoni2 sites
- Geomyoidea2 sites
- Gregorymys curtus2 sites
- Gripholagomys2 sites
- Hitonkala macdonaldtau2 sites
- Nexuotapirus marslandensis2 sites
- Nototamias quadratus2 sites
- Paciculus montanus2 sites
- Paciculus nebraskensis2 sites
- Palaeocastor2 sites
The Paleobiology Database records 14 sites for Gregorymys formosus, 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
6 references- Review of the Miocene Wounded Knee faunas of southwestern South Dakota7
- Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas2
- Monroe Creek (early Miocene) microfossils from the Wounded Knee area, South Dakota2
- Fossil small mammals from the Harrison Formation (late Arikareean: earliest Miocene), Cherry County, Nebraska1
- Skull morphology of Gregorymys and relationships of the Entoptychinae (Rodentia, Geomyidae)1
- The Miocene faunas from the Wounded Knee area of western South Dakota1
Each of the 14 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 content0
No picture of Gregorymys formosus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Gregorymys formosus, or no answer at all. This entry cannot say which.
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGregorymys through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew 1907)