Geomys
The genus Geomys contains 12 extant species of pocket gophers often collectively referred to as the eastern pocket gophers. Like all pocket gophers, members of this genus are fossorial herbivores.

Uncredited · Public Domain · via Wikipedia/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
- GeomyiniPBDB
- Diet
- browserPBDB, for Geomyidae
- Life habit
- fossorialPBDB
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 9.3 million years on record.
The record covers at least 9.4 Mya to 11.7 ka. No occurrence read is dated outside 16.3 Mya to 0 Mya.
161 occurrences of Geomys on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. 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
161 occurrences- Miocene1%
- Pliocene13%
- Pleistocene85%
- Holocene1%
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
19 formations
- Alamosa Formation25
- Kingsdown Formation7
- Rexroad Formation6
- Good Creek Formation3
- Gila Conglomerate Formation2
- Blanco Formation2
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The named rock units Geomys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 100 occurrences have no formation on record, which is common for older literature.
Geomys and its relatives
PleistoceneWhere Geomys and its relatives were recorded in the Pleistocene.
Found in the same rock
1,165 taxa- Equus58 sites
- Microtus pennsylvanicus36 sites
- Sylvilagus34 sites
- Odocoileus virginianus33 sites
- Dasypus bellus32 sites
- Peromyscus31 sites
- Scalopus aquaticus31 sites
- Platygonus28 sites
- Neotoma26 sites
- Sylvilagus floridanus26 sites
- Thamnophis26 sites
- Ambystoma tigrinum25 sites
- Canis latrans25 sites
- Camelops24 sites
- Procyon lotor24 sites
- Ondatra zibethicus23 sites
- Hemiauchenia macrocephala22 sites
- Mephitis mephitis21 sites
- Lynx rufus20 sites
- Mammuthus columbi20 sites
- Neotoma floridana20 sites
- Paramylodon harlani20 sites
- Rana20 sites
- Spermophilus20 sites
The Paleobiology Database records 159 sites for Geomys, 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
78 references- Middle Pleistocene (late Irvingtonian: Nebraskan) climatic changes in south-central Colorado25
- Chronology of Florida Pleistocene mammals11
- A late Pleistocene and early Holocene mammalian fauna from Little Beaver Cave, Central Ozarks, Missouri.9
- Geology and Paleontology of the Early Pleistocene (Late Blancan) White Rock Fauna from North-Central Kansas8
- Evolutionary Trends in Florida Pleistocene Pocket Gophers (Genus geomys), with Description of a New Species7
- Hintlian, 19755
- Eshelman and Hager, 19843
- Geology and paleontology of a late Pleistocene basin in southwest kansas3
- New rodents from the late Cenozoic of Kansas3
- Stratigraphy and Paleontology of the McPherson Equus Beds (Sandahl Local Fauna), McPherson County, Kansas3
- The Good Creek Formation, Pleistocene of Texas, and Its Fauna3
- Overview of the geology and vertebrate biochronology of the Leisey Shell Pit Local Fauna, Hillsborough County, Florida2
Each of the 161 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. 66 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 Geomys
- Source
- Wikipedia/Commons
- Credit
- nobody named on the record
- Licence
- Public Domain
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Credit
- Zoology Collection
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Geomys bursarius · nml:D.301
The description on this site
- Source
- Wikipedia, “Geomys”
- 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 itGeomyini through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Rafinesque 1817