Marmota monax
The groundhog, also known as the woodchuck, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. A lowland creature of North America, it is found through much of the Eastern United States, across Canada and into Alaska. It was given its scientific name as Mus monax by Carl Linnaeus in 1758, based on a description of the animal by George Edwards, published in 1743.

Cephas · CC BY-SA 3.0 · 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- Also called
- groundhogPBDB
- Sits inside
- MarmotaPBDB
- Diet
- granivore, frugivorePBDB, for Sciuridae
- Life habit
- semifossorialPBDB, for Marmota
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
- Mass
- 27 gWikidata
Time the record covers
At least 198 thousand years on record.
The record covers at least 210 ka to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.
46 occurrences of Marmota monax 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
46 occurrences- Pleistocene73%
- Holocene27%
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.
Marmota monax and its relatives
PleistoceneWhere Marmota monax and its relatives were recorded in the Pleistocene.
Found in the same rock
570 taxa- Odocoileus virginianus29 sites
- Neotoma floridana27 sites
- Castor canadensis26 sites
- Tamias striatus23 sites
- Ursus americanus23 sites
- Erethizon dorsatum22 sites
- Procyon lotor22 sites
- Peromyscus21 sites
- Microtus pennsylvanicus20 sites
- Synaptomys cooperi19 sites
- Tamiasciurus hudsonicus19 sites
- Blarina brevicauda18 sites
- Clethrionomys gapperi18 sites
- Ondatra zibethicus18 sites
- Eptesicus fuscus17 sites
- Glaucomys volans15 sites
- Spermophilus tridecemlineatus15 sites
- Microtus chrotorrhinus14 sites
- Myotis14 sites
- Parascalops breweri14 sites
- Sorex fumeus14 sites
- Sciurus carolinensis13 sites
- Sorex cinereus13 sites
- Microtus pinetorum12 sites
The Paleobiology Database records 46 sites for Marmota monax, 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
28 references- Quaternary vertebrate localities of Virginia and their avian and mammalian fauna8
- Paleontology and historic field trip of the John Guilday Cave Preserve (Trout Rock)4
- Animal remains from Ohio rock shelters4
- Pleistocene Paleontological Sites in Appalachian Caves3
- Ecological Significance of Displaced Boreal Mammals in West Virginia Caves3
- Bones of mammals From West Virginia caves2
- Fossil Mammals From Island Ford Cave, Virginia, USA1
- Daeschler, 19961
- A preliminary account of the Pleistocene mammals from Patton Cave, Monroe County, West Virginia1
- Guilday, 19841
- Kurten and Anderson, 19801
- The Pleistocene mammalian fauna of Harrodsburg Crevice, Monroe County, Indiana1
Each of the 46 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. 16 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 Marmota monax
- Source
- Wikipedia/Commons
- Credit
- Cephas
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
Structured light scan
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Marmota monax · MUZO:MT:380
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Groundhog”
- 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 itMarmota through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)